Corn stalk returning field should pay attention to the problem

The implementation of straw returning to field can cultivate fertility, improve the structure and physicochemical properties of soil aggregates, and increase grain yield. It is an effective measure to develop sustainable agriculture. However, most farmers lack understanding of straw returning technology, resulting in poor performance of corn stalk return. The specific performance of corn stalks returned to the field after the emergence of low seedling emergence, seedling yellow seedlings weak or even dead seedling phenomenon. Therefore, the following points must be noted when corn stalks are returned to the field:

The straw must be chopped and chopped into a short section of 3 to 6 cm long, or crushed by mechanical means to avoid excessive soil pressure on the straw and affect the emergence and growth of the crop.

After the corn stalks are returned to the field, the water content of the soil will be reduced due to water absorption and microbial decomposition of the straw itself. Therefore, timely watering is required to promote close integration of the straw with the soil.

Supplementary nitrogen application of soil microorganisms in the decomposition of crop straw, the need for a certain amount of nitrogen, there will be competition with crop seedlings in soil nitrogen phenomenon. Therefore, the proportion of 10 kg of ammonium bicarbonate per 100 kg of corn straw should be supplemented so that nitrogen deficiency and yellowing at the seedling stage can be avoided.

The number of corn stalks that should be suitable for returning to the field should be 300-400 kilograms per acre, but more damage to the roots of crops will be caused.

The depth of ploughing should be reasonable. When corn stalks are returned to the field, they should generally be buried in the soil below 10 cm and compacted. At the same time should also pay attention to Honda straw Honda.

Prevention of pests and diseases Spreading corn stalks When returning farmland, use well-grown stalks instead of returning fields with pests and pests to prevent pests from spreading and spreading. (Jia Youjiang)

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