Several measures to improve the effect of returning corn stalks to the field

At present, the use of corn stalks to return the corn stalks to the field and directly return to the field for wheat base fertilizer is an effective measure to save labor, labor, increase production and improve soil fertility, but some effects are not obvious, the main reason is not very good In combination with agronomic measures, if you want to combine the agronomic measures to improve the effect of straw returning, you should mainly grasp the following points:

 

First, we must crush the green. Green corn stalks are brittle and easily crushed. Therefore, the corn should be harvested in time, and 80% of the stalks should be grasped without drying. Immediately after the smashing, the smashing is carried out to improve the quality of the smash, and the straw residue is short, broken and evenly distributed. It can also reduce the loss of sugar in the straw, which is beneficial to accelerate the decomposition of straw and increase soil nutrients.

 

Second, it is necessary to apply a small amount of nitrogen and phosphate fertilizer. The decomposition process of corn stalk in the soil, that is, the process of microbial life, absorbs the original nitrogen, phosphorus and water in the soil. According to the research of the scientific research department, the ratio of carbon, nitrogen and phosphorus in the process of decomposing corn straw is about 100 : 4 : 1 , and the ratio of these three elements in corn stover is 100 : 2 : 0 . 3 or so, so when the bottom fertilizer is insufficient, there will be problems in competing with the crops when the straw is decomposed, and affecting the growth and development of the crop. If 500 kg of straw is pressed per mu , and 4.5 kg of pure nitrogen and 1.5 kg of pure phosphorus are added, the straw can be decomposed, become effective nutrients as soon as possible, and solve the problem of nitrogen deficiency and phosphorus deficiency in wheat seedlings.

 

Third, we must rot or smash the ground. Chopped completed, add fertilizer job immediately or rotary stubble harrow the straw residues dispersed uniformly mixed with soil, and into the 0 - 100 mm in the soil, while the cut should Corn Root, In order to facilitate decompression.

 

Fourth, we must deepen the pressure. Tillage depth required 200--250 mm, so that the straw residues either buried well and retained throughout the topsoil. Promote the decomposition of straw to fully exert the fertilizer effect.

 

Fifth, it is necessary to pour water into the mud. After the straw is turned over, there is an overhead phenomenon on the soil, which is extremely detrimental to the decomposing of straw, the germination of wheat seeds, and the growth and development of wheat seedlings. Therefore, after ploughing, it is necessary to pour water to the surface to solve the problem of soil being overhead. At the same time, sufficient water is a necessary condition for straw decomposing and wheat seed germination and seedling growth and development. Therefore, it is a feasible measure to pour the water.

 

Sixth, we must plant the surface and plant again. The wheat should be finely ground before planting. By eliminating the dark and dark shovel and smashing the ground, the soil overhead problem can be further solved, and the mixing and contact of the straw residue with the soil can be strengthened to accelerate the decomposing. It is also the agronomic requirement for wheat sowing by smashing the ground to make the soil imaginary.

 

7. Pour the frozen water and return to the green water. The corn stalk needs a large amount of water in the process of decomposing in the soil. If it is not replenished in time, it will not only decompose and reduce, but also contradict the water production of wheat seedlings. Therefore, it is necessary to pour the frozen water. In the spring of next year, it is necessary to properly pour the green water back to promote the decomposition of the straw to ensure sufficient water for the growth and development of the wheat seedlings.

 

Source: China Agricultural Promotion Network