Corn stalks returned to the field to pay attention to wheat

To add a small amount of nitrogen, phosphorus fertilizer corn stalk decomposition process in the soil, that is, microbial life activities, to absorb the original nitrogen in the soil, phosphorus and moisture. According to experiments conducted by the scientific research department, the ratio of carbon, nitrogen, and phosphorus required for the decomposition of corn stalks is about 100:4:1, and the proportion of these three elements in corn stover is about 100:2:0.3, so when the base fertilizer is insufficient, There will be a problem of competing for water with crops during the decomposition of straw, which will affect the growth and development of crops. If 500 kg of straw is turned over per acre and 4.5 kg of pure nitrogen and 1.5 kg of pure phosphorus are added, it will accelerate decomposition of straw and turn it into effective nutrients as soon as possible, and it will also solve the problem of nitrogen deficiency and phosphorus deficiency in wheat seedlings.

To deep plowing requires 20-25 cm of plowing, so that the residue of the straw is buried well, and it is retained in the entire plow layer. Promote straw decomposition, in order to fully play fertilizer effect.

To suppress the use of straw to return to the plots several times, it is easy to cause different shades of wheat to form deep sowing seedlings or shallow sowing dead seedlings, resulting in insufficient panicles, reduce production; In addition, such land loss faster. Therefore, stalks returning to the plot must be ploughed as soon as possible after the ploughing and repression to ensure the same depth of sowing. If soil moisture does not need to be watered or smashed, comminuted corn stalks should be ploughed or rotavated. After the comminuted corn stalks are ploughed or rotavnated, they are repressed with a repressor and then re-pressed after sowing. This ensures that the roots of wheat are normally grown after emergence and improve drought resistance and drought resistance. ability.

Appropriate increase in the amount of straw returned to the field, the amount of winter wheat seed can be increased by 4-5% on the basis of the appropriate type of ordinary land.

Must be well-sealed frozen winter wheat suitable for the appropriate period of winter irrigation is generally the end of November and early December, when the soil "night frozen depleted." Winter irrigation is too early, the temperature is high, and evaporation is too large to achieve the desired effect. When the winter irrigation is too late, the soil is frozen, the water cannot be infiltrated in time, and the water in the ground area is frozen. The wheat seedlings suffocate and die under the ice layer, or form ice cubes, lift the clods, break the wheat root, and hang the wheat seedlings.

It is necessary to carry out buckwheat for winter wheat plots in winter and early spring in order to control O. officinale wheat, especially straw. Repression in winter, can crush the clod, compact the surface, to close the earth seam, favorable water, fertilizer, insulation, freeze and protect seedlings; early spring pressure wheat, can increase temperature, protect lotus root, raise earthworms, promote wheat turn green, plant robust . Overwintering wheat returns to green wheat 2-3 times, at least once in the middle and late January and late March and early March respectively. When repressing, pay attention to the conditions of the soil. The soil is not over-moistened. There is dew or no pressure during freezing. The saline-alkali soil should not be repressed. Rabbits will cause back-salt. In the low-lying areas in the winter there are “tethering”, “root pull” and freezing damage, and timely repression can reduce the freezing of dead seedlings.

In winter, it is necessary to cover the soil and cover the manure and cover the manure to effectively heal soil cracks, and play the role of heat preservation, protection and cold protection. When the winter wheat seedlings basically stop growing after the winter season (Winter Snow Festival), the earthworms cover the dirt and cover the dirt about 2 centimeters. Before cleaning, clean up the dirt that covers the wheat.

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