Sorghum planting time and method

Sorghum is suitable for sowing from mid-March to late June, and the growth period is about 100- 120 days, and it matures in July-10. Early-maturing varieties can be planted for two seasons. Ordinary single-season planting is generally sown in late April and mature in late August, and the suitable growth temperature is between 20-30 degrees. The whole growing period needs sufficient light and timely intertillage.

Growth habit of sorghum

Sorghum is a warm crop and likes warm and sunny environment. The suitable growth temperature is between 20-30 degrees, and sufficient light is needed during the whole growth period. Wide adaptability to the environment, drought resistance, waterlogging resistance, saline-alkali resistance and barren resistance.

Sorghum planting time

Sorghum is suitable for sowing from mid-March to late June, and its growth cycle is about 100- 120 days, and it matures in July-10. Early-maturing varieties can be planted for two seasons, and ordinary single-season planting is generally planted in late April and mature in late August.

Sorghum planting method

1, soil preparation

Sorghum needs to be prepared in advance before sowing, which is the key to determine the yield. It needs careful preparation and raking to ensure soil moisture, which is beneficial to the better growth of sorghum.

Step 2 sow seeds

Sorghum seeds should be artificially screened before sowing and seedling raising. It is convenient to use air separation to remove smaller sorghum grains and leave excellent and full sorghum grains. Before sowing, put the seeds in the sun for 2 to 3 days, and then sow them to raise seedlings, which often leads to higher germination rate and survival rate.

Step 3 raise seedlings

Sorghum planting generally adopts the method of thinning seedlings and fixing seedlings. The thinning of seedlings is generally carried out at 3 ~ 4 leaves, and the fixing of seedlings is generally carried out at 5 ~ 6 leaves. It should be noted that in the process of fixing seedlings, we should try our best to keep strong seedlings, big seedlings and small seedlings at the same distance.

4. Tian Tuan management

(1) Tillage: Sorghum needs to be mixed with soil after planting, which can improve the air permeability of soil, enhance fertility and promote the absorption of nutrients by sorghum roots. Moreover, due to the tall sorghum plants, it is necessary to do a good job of ploughing when the sorghum reaches the trumpet stage to prevent the yield from being affected by excessive growth and lodging.

(2) Reasonable weeding: Weeds are bound to appear in sorghum fields, so weeding should be done in time to avoid the growth of sorghum being blocked and lack of nutrients, especially when sorghum is in its seedling stage, its nutrient absorption capacity is very weak, and all nutrients are taken away by weeds, so it is necessary to spray herbicides in time, and the spraying should be comprehensive and even.

(3) Top dressing: Top dressing is needed for planting sorghum, which should be carried out according to the growth and varieties of sorghum. If sufficient fertilizer is applied when seedlings are transplanted, there is no need to topdressing sorghum when it turns green. If you don't apply fertilizer, you should apply fertilizer appropriately according to the nutritional situation.

5, pest control

After seed selection and drying, it is necessary to use proper dosage of seed coating agent for seed dressing, and the dosage of 25% triadimefon wettable powder can be controlled within the range of 0.3% ~ 0.5% of seed amount. In addition, common aphids and flies that are harmful to sorghum growth should be sprayed in time at the early stage of occurrence, and insecticides such as beta-cypermethrin and imidacloprid can be selected.

Step 6 harvest after maturity

Sorghum should be harvested when the seeds of the upper and middle ears turn red. When harvesting, the stubble should be removed first, and the stalks should be cut in time after harvesting in the first season. Sickle can be used to cut the stem quickly to minimize the degree of stem fracture.