Grasping five key points in wheat spring management is more conducive to improving wheat yield?

As the saying goes, "A year's plan lies in spring", and the spring management of wheat is very important, which will have a great impact on the later growth of wheat, because the key period of wheat growth is in spring. Paying attention to the spring management of wheat and grasping the key points of management are more conducive to improving the yield of wheat.

The spring management of wheat mainly includes five points:

1. Prevent the harm caused by late spring cold. After the spring, the temperature rises slowly, and the wheat gradually adapts to the process of warming up, turning green, getting up, jointing, etc. At this time, the cold tolerance of wheat is far less than that of wheat seedlings in the wintering period, especially in the spring cold caused by sudden cold wave weather. Spring frost is very harmful to a wheat. If the soil moisture is insufficient, Irrigate water in time, especially in wheat fields with soil moisture content less than 67~7%, and water irrigation should be carried out a few days before the arrival of cold wave weather to improve the soil reserve heat, so as to minimize the freezing injury of wheat. After the cold wave, check the freezing injury of wheat seedlings in time and spray foliar fertilizer in time to promote the rapid recovery of wheat seedlings and reduce the loss caused by freezing injury. The foliar fertilizer can be .5% potassium dihydrogen phosphate aqueous solution+1.

2. To prevent and control weeds, it is also a suitable germination and growth period for weeds in the field after spring. For those with more weeds in the wheat field, it is best to adopt intertillage to weed, which can not only weed but also play a role in weeding and conserving soil moisture, which is beneficial to the growth of wheat. Although spraying herbicides saves labor, it is harmful to some extent. When using it, we must strictly control the dosage and time to avoid phytotoxicity.

3. Pay attention to the application of jointing fertilizer. It is best to choose compound fertilizer for jointing fertilizer for wheat. Wheat grows healthily at seedling stage, and turning green fertilizer can be ignored, but jointing fertilizer needs to be supplemented. It has a very good promotion effect on the benign transformation of three kinds of seedlings.

The second-class seedlings develop into high photosynthetic efficiency groups. Generally, they are applied when the second internode at the base of the wheat stem is significantly elongated, that is, when the main stem falls for three leaves, and about 1~12 kilograms of high-nitrogen ternary compound fertilizer is applied per mu.

4. To prevent and control pests and diseases, according to the different resistance of wheat varieties, choose appropriate targeted chemicals to spray. The diseases that are easy to occur in spring of wheat generally include sheath blight, root rot, take-all disease, rust and powdery mildew, wheat red spider and aphid.

early detection and prevention should be achieved. When the ground temperature is stable above 8 degrees, pesticides can be sprayed to control pests and diseases, powdery mildew can be controlled by spraying triadimefon 1 times, and wheat sheath blight can be controlled by benzoxazole, diniconazole and tebuconazole.

When the wheat seeds were dressed with thiamethoxam seed coating agent before sowing, the occurrence of aphids was relatively light, and imidacloprid+beta-cypermethrin+silicone pesticide synergist could be sprayed evenly.

Wheat red spider can be controlled by avermectin or avermectin ester.

Generally, the ground temperature is stable above 15 degrees, which is the period when various diseases and insect pests are easy to occur in wheat fields, so we should pay close attention to spraying chemicals in advance to prevent and control them.

5. Do a good job in dredging the drainage ditch. For wheat fields with poor drainage, dredge the drainage ditch in time to avoid continuous rain. After heavy rain, poor drainage will cause farmland waterlogging.

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