Wheat Sowing After Seeding Wheat Should Have “Three Preventions”

The return of corn stalk to soil can increase soil organic matter content, improve soil physicochemical properties and granule structure, and has become a very important measure for increasing yield and stable production of fertility all over the world. However, if the supporting technology is not in place, it will lead to the occurrence of undesirable phenomena such as yellow seedlings, weak seedlings, increased disease, and lack of seedlings.

After preventing the emergence of weak corn stalks from returning seedlings to the fields, the nutrients in the straw cannot be directly absorbed and utilized by the crops and must be decomposed by microorganisms. The ratio of carbon to nitrogen that is suitable for soil microbial activity is 25:1 to 30:1, while the ratio of carbon to nitrogen for corn stover is 80:1 to 100:1. If the nitrogen in the soil is insufficient, microorganisms and wheat will compete for nitrogen, and wheat As a result, nitrogen deficiency and weak seedlings appear due to nitrogen deficiency. Therefore, nitrogen fertilizer should be added to the base fertilizer of wheat straw. Based on normal fertilization of wheat, urea can be increased by 5 to 7.5 kilograms to meet the demand of wheat and microbe for nutrients, and to accelerate the decomposition of straw decomposition.

Prevention of pests and diseases The corn stalks often contain a large number of pathogens and eggs, which cannot be killed during direct smashing of the straw, and remain in the soil after returning to the field. Farmland diseases and pests, especially the underground pests, have a tendency to increase year by year, harming wheat. Normal growth. In the sowing period of wheat, “anti-prevention and treatment” should be used to properly handle seed pesticide treatment and pest control in wheat fields. It is best to buy coated seeds, or to make seed dressings. Should be mixed with insecticides, boring and then mixed with fungicide, after drying can be sown, the seed has been mixed with fungicides can not be long home. In areas where serious underground pests occur, pesticide soils should also be used.

To prevent the lack of seedlings to cut back a large number of corn stalks to return the soil, the soil becomes loose and the gaps increase, the loss of pods is fast, the seed and the soil are difficult to contact closely, and the seed germination and seedling emergence are affected, and the emergence in the field is often irregular, and the emergence of seedlings is likely to occur. phenomenon. First, on the premise of improving the quality of straw returned to the field, we must insist that the return of straw to the fields must be deep-turned, and the rotation of the fields must be suppressed. Second, sowing wheat after straw returning, sowing should be properly increased by 0.5 to 2 kilograms on the basis of the sowing with the suppression of sowing, so that the seeds and soil in close contact to ensure adequate basic seedlings. Third, we must return to the field, "preferably appropriate late sowing, we must also make foot pods," so that we can plant enough seeds to ensure that all seedlings are broadcast. When the lyrics are not enough after sowing, they can also be poured in time. Timely check seedlings fill seedlings. Winter water should be early and the water volume should be small to sink the soil. After the watering, the cultivator should also timely remove the compaction.

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