The practice of returning straw to the field is a crucial strategy for enhancing soil fertility, improving soil structure and its physicochemical properties, and ultimately boosting grain yields. It plays a vital role in promoting sustainable agricultural development. However, many farmers lack proper knowledge about the technology involved, which often leads to suboptimal results when corn stalks are returned to the field. Common issues include poor seedling emergence, yellowing or weak seedlings, and even complete crop failure.
To ensure successful implementation, several key considerations should be taken into account:
First, the corn stalks must be cut into small pieces, ideally 3 to 6 cm in length, or crushed mechanically. This helps prevent excessive accumulation of straw on the soil surface, which can hinder seed germination and plant growth.
Second, after returning the stalks to the field, the soil moisture may decrease due to water absorption by the straw and microbial decomposition. Therefore, timely irrigation is essential to help the straw integrate well with the soil and support healthy crop development.
Third, during the decomposition process, soil microorganisms require nitrogen. This can lead to competition between the microbes and the young crops for available nitrogen, resulting in nitrogen deficiency and yellowing of seedlings. To prevent this, it is recommended to apply approximately 10 kg of ammonium bicarbonate per 100 kg of corn straw.
Fourth, the amount of corn stalks returned to the field should be carefully controlled. A reasonable rate is around 300 to 400 kilograms per acre. Exceeding this limit may harm the crop's root system and negatively impact growth.
Fifth, the plowing depth should be appropriate. Corn stalks should generally be buried at least 10 cm below the soil surface and compacted to ensure proper decomposition and nutrient release.
Lastly, it’s important to manage pests and diseases. Only healthy, disease-free corn stalks should be returned to the field. Avoid using stalks that show signs of pest infestation, as this could spread harmful organisms to the new crop.
By following these guidelines, farmers can maximize the benefits of straw returning while minimizing potential problems, leading to more productive and sustainable farming practices.
Face Mask,Sterile Wound Dressing,Adhesive Wound Dressing,Collagen Wound Dressing
Changzhou Timerein Biotechnology Co. , Ltd. , https://www.timereinbiotech.com