Straw returning to land is an important measure to improve farmland ecological environment, develop sustainable agriculture and dry farming, and is an important part of cost-saving and efficiency-improving agriculture, and an effective means to promote the development of green food. Returning corn stalks to the field is to crush the corn stalks directly on the ground or deep into the ground. The return of corn stalks to the soil can increase soil organic matter content, improve the structure of soil aggregates, and enhance soil water and fertility conservation. It is an important measure to ensure stable and high yield in agriculture. The following points must be noted when corn stalks return to the field:
Straw should be chopped.
The corn stalks shall be freshly chopped into short sections of 3 to 6 centimeters in length, or crushed by mechanical comminution so as to avoid excessive soil pressure in the stalks, affecting the emergence and growth of the pod crops.
It is enough to return to the field.
After corn stalks are returned to the field, the water content of the soil will be reduced due to the water absorption of the straw itself and the decomposition of the microorganisms. Therefore, timely watering is needed to make the chopped corn stalks in close contact with the soil to prevent it from being overhead.
Apply nitrogen fertilizer.
When the soil microorganisms decompose the crop stalks, they need a certain amount of nitrogen, and they will compete with the pod crops for the nitrogen in the soil. Therefore, the proportion of 100 kg of corn stalks plus 10 kg of ammonium bicarbonate should be used as a supplementary fertilizer so that nitrogen deficiency and yellowing at the seedling stage can be avoided.
The quantity should be suitable.
The use of 300-400 kg of corn stalks per acre is better, and more, it will impede the growth of root crops in the lower crop.
Plowing depth should be reasonable.
When corn stalks are returned to the farm, they should generally be buried in soil below 10 cm and compacted. At the same time, we should also pay attention to Honda straw Honda, do not return Honda's straw to other fields.
Prevent pest transmission.
When corn stalks are returned to the field, they should use well-grown stalks instead of returning corn stalks with pests and diseases to prevent the spread of pests and diseases.
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