When is the best time to plant soybeans?

Question 1: When will soybeans be planted? Usually from the end of May to the beginning of June. The time varies slightly from place to place.

Growth habit of soybean:

Soybean likes temperature, and seeds begin to germinate at 10- 12℃.

The optimum temperature is 15-20℃ and the growth temperature is 20-25℃.

The optimum temperature for flowering and pod setting is 20-28℃.

Pod setting is delayed at low temperature, and it cannot bloom below 14℃.

If the temperature is too high, plants will end their growth ahead of schedule.

Seed germination needs more water,

The soil moisture content is required to be 70%-80% at flowering stage.

Otherwise, the bud shedding rate will increase.

The amount of fertilizer absorbed by soybean before flowering is less than 15% of the total.

The flowering and pod-setting period accounts for more than 80% of the total fertilizer absorption.

Question 2: When to plant soybeans is classified according to sowing date. Soybean in China can be divided into spring soybean type, Huanghuaihai summer soybean type, southern summer soybean type and autumn soybean type.

1. Spring soybean type

The northern spring soybean types were sown from April to May and matured in September, while the Huanghuaihai spring soybean types were sown from late April to early May and matured from late August to early September. The types of spring soybeans in the Yangtze River basin are sown from the end of March to the beginning of April and mature in July. The southern spring soybean type is sown from February to early March, which is more mature than in mid-June. Spring soybean is short of sunshine and weak.

In May, there was sufficient precipitation and suitable temperature in most parts of Northeast China, which was very beneficial to soybean sowing and early sowing of soybean seedlings.

2. Types of summer soybean in Huanghuaihai

Wheat is sown in June after harvest and ripens from September to1early October. The short sunshine is moderate.

3. Types of Summer Soybean in South China

Generally, it is sown after wheat harvest or other winter sowing crops are harvested and protected from May to early June, and it will mature at the end of September to 10. Strong short sunshine.

4. Autumn soybean types

Sowing from the end of July to the beginning of August,1mid-October 165438+ ripening. The short sunshine is extremely strong.

On April 24th this year, local officials in Heilongjiang, the largest soybean producing area in China, said that the soybean planting area in Heilongjiang may decrease this year, and the low temperature in April compared with the same period last year will delay the planting time by about 10 days to the beginning of May. It's May 5th, and soybean planting should start one after another.

The main soybean producers in the world are Argentina, the United States, Brazil and so on. Soybean planting has also begun in all parts of the United States. According to the news of USDA on May 3rd, USDA announced in its weekly crop growth report on Monday (May 3rd) that as of the week of May 2nd, the soybean planting rate in the United States was 15%, compared with 5% in the same period of 2009, with a five-year average of 8%.

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Question 3: When can soybeans be planted? Generally, before and after Qingming Festival and before planting, excellent varieties are selected and treated with ammonium molybdate and new high-fat film (which can effectively isolate virus infection, not affect the function of germination and expansion, strengthen respiratory intensity and improve seed germination rate). Sow at the right time as needed.

Question 4: When is the best sowing time for southern soybeans? 5 points

Question 5: High-yield soybean planting techniques and how to plant soybeans well;

Deep fertilization

Fertilization method: Under normal circumstances, fertilizer seeds are separated and applied 4-5 cm below the seed side, and the amount of fertilizer can be adjusted. When more than 20 kg of diammonium phosphate is applied every 667 square meters, it can be applied in layers: the depth of the upper layer of seed fertilizer is 5-7 cm, and the fertilization amount accounts for1/3; The application depth of base fertilizer is 10- 16 cm, and the fertilization amount accounts for 2/3. Or after the previous crop is harvested, the fermented organic fertilizer is evenly spread on the ground, then the fertilizer is raked into the soil with a rake, and the manure and the soil are fully mixed, and then deeply turned, and the raked bottles are finely ridged, or soybeans can be planted flat.

Fine sowing

Reasonable rotation: it is best to choose the correct stubble, not heavy, and plant it in advance.

Careful soil preparation: turn the ground according to the previous crop in summer and autumn, with a depth of 22-25 cm. When operating, there will be no big clods, no exposed strips or blocks, and the buttons should be tight and not heavy and leaking.

Soil moisture: After soil preparation, the soil moisture (calculated by dry soil weight) should be about 22% when sowing to ensure the normal water absorption and germination of seeds.

Sowing in time: Sowing soybeans in summer can be done after wheat harvest as long as the moisture content is suitable. The best sowing date is June 10 to 25th, not later than early July.

Tiantuan management

Mowing and intertillage:

(1) hoes are everywhere before the first compound leaf, so as to hoe the seedlings without damaging the seedlings and loosening the topsoil.

(2) The second intertillage should be carried out when the seedling height is about 10 cm, so as to avoid damaging the seedling, pressing the seedling or leaking grass.

(3) About 10 days after the second intertillage, the third intertillage should be carried out and more soil should be sown.

Weeding before seedling: The most commonly used broad-spectrum herbicides in production are Prostate and clomazone, which are effective against many gramineous and broad-leaved weeds in soybean fields. Dosage: 5% Puster aqua, the dosage is per hectare 1.5-2 kg; 48% clomazone EC, 2-2.5 kg per hectare. Pust, tribenuron-methyl and clomazone can remain in soil for a long time, and special attention should be paid to the phytotoxicity of the following crops.

Weeding after seedling:

⑴ Herbicide suitable for early emergence: Pust is the most widely used herbicide in production at present. When weeds are first unearthed, they are generally not later than the second compound leaf stage of soybeans. The dosage of Pusht applied in the early stage of emergence is: 5% Pusht aqueous solution per hectare 1- 1.5 kg, and it should not exceed 1.5 kg per hectare. We should choose the weather with high humidity before and after the rain to avoid high temperature and dry noon and windy weather.

(2) The dosage of emulsion is 12%, and the dosage per hectare is 1- 1.5 kg; Concentrate 1.5%, and the dosage per hectare is 0.75- 1 kg; 5% Jingcaoke EC and 24% Kekuole EC, the dosage per hectare is 0.33-0.75 kg.

⑶ Herbicides suitable for the late stage of seedling emergence are generally applied at the compound leaf stage of 2-3 pieces of soybean. When the soil moisture is good in spring, the pesticide can be applied early, and the lower limit is generally used. In spring drought, the application can be delayed appropriately, and the dosage is generally limited.

Question 6: When is the best time for soybean fertilization? Soybean is a nitrogen-fixing crop with many branches, nodes and flowers, and its nutritional feature is that it likes phosphorus. Nodules on the root system can fix a large amount of nitrogen in the air by themselves, but a small amount of nitrogen needs to be supplemented before the nodules develop vigorously. Delaying the reaction to potassium and implementing effective potassium supply measures can obviously increase the yield, which should be paid enough attention to by farmers.

Soybean fertilization focuses on phosphorus, nitrogen and potassium. Generally, 30-40 kg of phosphate fertilizer, 58 kg of urea or 15-20 kg of diammonium are applied to the bottom of an acre. Soybean seed dressing with ammonium molybdate, spraying boric acid or borax at full flowering stage and spraying spring rain 1 (sodium nitrophenolate) all have significant yield-increasing effects.

According to the experiment of Heilongjiang Agricultural Reclamation University, spraying spring rain 1 twice (seedling stage and initial flowering stage) increased the yield of soybean by 18.6%, applying spring rain 1 5 g at the bottom of mu, adding diammonium phosphate 15kg, and increasing the yield of soybean by 23.6% per mu.

Question 7: When will autumn soybeans be planted? Hello, after Labor Day, the temperature will be above zero and above 20 degrees. I wish you a bumper harvest this year.

Question 8: When should vegetable soybeans be planted? 1. Select seeds.

Soybean sprouts are a nutritious and delicious vegetable and a good source of protein and vitamins. According to the analysis, every 1 00g of soybean sprouts contains protein1.5g, fat 2g, sugar 7g.1g, crude fiber1g, calcium 68mg, phosphorus102mg and iron.

Bean sprouts contain nitrophosphatase, which can supplement the enzyme lacking in the brain of epileptic patients, so bean sprouts have the effect of relieving epilepsy. Chlorophyll newly produced in bean sprouts can prevent rectal cancer and other canceration. Bean sprouts are rich in vitamin E, which is also good for preventing cancer. Bean sprouts have the effects of clearing away heat and improving eyesight, invigorating qi and nourishing blood, preventing gingival bleeding, cardiovascular sclerosis and low cholesterol. Vitamin E contained in bean sprouts can protect skin and capillaries, prevent arteriosclerosis and prevent hypertension in the elderly. In addition, because soybean sprouts contain vitamin C, they are beauty food. Eating soybean sprouts regularly can nourish hair, keep hair black and bright, and have a good effect on facial freckles.

Generally, in order to increase the yield or prolong the fresh-keeping time, various hormones are added to the bean sprouts purchased outside, including: auxin, rootless element, thickener, whitening agent, preservative, Su Changling, bactericide, fresh-keeping powder, water-soluble AB powder, water-insoluble AB powder and other N varieties.

Bean sprouts sold outside are generally thick and white with high moisture content. The moisture content of real home-cooked bean sprouts is relatively low, yellowish and more tasty.

If you produce bean sprouts at home, you don't have to worry so much, and you don't need to add any hormones. Generally speaking, soybean sprouts can be produced in barrels or slightly larger containers, but you must punch holes in the lower part of the container. Soybean sprouts need to be produced in a dark room and watered three or four times a day, so they are not suitable for being placed on the balcony. They can be put in the bathroom or other storage room.

Select seeds

There are many varieties of soybeans, you can choose by yourself. However, beans should be planted in the same year. Generally speaking, they should not be bought in the supermarket. They seem to be beautifully packaged, but they may have been stored for a long time and their germination rate is very low. Store beans in a dry and low temperature place.

3. Please select

After the beans are ready, they need to be cleaned simply. Dry and moldy seeds and impurities can be removed by hand, tweezers or water.

impregnate seed

After selection, wash with clear water several times to increase the air permeability of the planted beans. Pour the washed beans into a bucket or basin to soak the seeds. Bean sprouts are usually produced in large wooden barrels or plastic barrels. If the capacity of household buckets is different, the amount of beans planted in a bucket is generally 1-2 kg, so be careful not to use too much, because the production capacity of bean sprouts is generally about 6 times.

The soaking time depends on the temperature season, generally 6- 12 hours, about 6 hours in summer, 8- 12 hours in spring and autumn, and 15-20 hours in winter. You can change the water once on the way.

The principle of soaking beans is that beans basically swell, and the skin of beans is not or rarely wrinkled. Soaking for too long will lead to slow growth and low resistance; If the soaking time is short, the water absorption will be insufficient, which will affect the later growth.

After soaking the beans, filter and rinse the mucus on the surface of the beans with clear water to make the beans dry and breathable.

sow seeds

To produce soybean sprouts, it is necessary to prepare a barrel container, and to open a water leakage hole at the bottom, prepare a filter membrane above the water leakage hole (plastic mesh is enough), and prepare a black woven bag or cloth bag to cover it. Before sowing, the bucket needs to be cleaned and the bottom of the bucket should be padded with bricks or other things. The barrel can be against the wall, and the side of the water leakage hole is at the lowest end, so that water can flow out fully when pouring in, and there will be no accumulated water to soak beans.

Put the bucket in place, put a filter membrane on the bottom of the bucket, pour the bean seeds into the bucket, cover it with a black woven bag or cloth bag, then fill the bucket with water until the water just submerges the top layer of the bean seeds, and then let the water flow out naturally and place it.

6. Water and light management

In order to produce soybean sprouts, it is necessary to reduce the light as much as possible in the dark. The lowest temperature of bean sprouts is 10℃, the most suitable temperature is 2 1 ~ 27℃, the highest temperature is 28 ~ 30℃, and the highest temperature should not exceed 32℃. In the process of bud cultivation, water is used to adjust the temperature. For example, if the temperature is too high in summer, you should use cold water to pour bean sprouts, but pay attention to pouring bean sprouts through the center of the cultivation container.

It needs to be irrigated about three times a day, and the irrigation times depend on the seasonal temperature. If the temperature is high, the number of irrigation should be increased so that the beans can be flooded every time. You can also use shower, and the standard of shower is drenching.

......& gt& gt

Question 9: How to grow soybeans in flowerpots, right? Are you going to let them grow and bear fruit until the harvest?

First of all, the soil should be fine, not too much water, and it is better to knead it into a ball. It's better to drill some holes under the basin.

A small amount of chemical fertilizer or farmyard manure should be used. Sow with 7 cm fertilizer and water less. More water is needed before the seeds germinate. Cover the seeds with 3 cm thick soil. The temperature should be suitable. When the outdoor temperature is not lower than 10℃ at night, they can be placed outdoors. After teething, you often loosen soil and water it. I want to know how big your pot is, and the seeds are 5 cm apart. Everything is fine.

The relationship between seed varieties is also different in the growth period, from 80 days to 140 days.

I wish you success.

Question 10: When is the latest time to plant soybeans? The northern spring soybean type is sown from April to May. Huanghuaihai summer soybean was sown in June after wheat harvest. The types of summer soybeans in southern China are generally from May to early June. The sowing time of autumn soybean is from the end of July to the beginning of August.