At present, there are certain problems in the return of corn stalks to the fields, such as excessive straw returning, long straw cutting, and incomplete decomposition of straw in the soil. To solve these problems, the specific measures for returning corn stalks are summarized.
1 The number of returned crops should be considered when returning straw to the field, and the returning crop straw should evenly cover the surface. If the excessive straw or uneven distribution is not conducive to the decomposition and mineralization of straw, and affect the growth of seedlings or seedlings, resulting in crop yield reduction, generally returning 500 kg per mu, the excess straw is properly handled.
2 Timely smashing straw returned to green, when the water content is more than 30% when returning to field, the straw contains high y, high moisture content, easy to be crushed, perishable, crushed length less than 5cm is better.
3 Applying nitrogenous fertilizers with appropriate amounts of deep-release nitrogen fertilizers to adjust the appropriate ratio of carbon to nitrogen. In general, grass crops contain high levels of vitamins, and carbon materials in the soil will increase sharply after returning. The growth of microorganisms is based on carbon as energy and nitrogen as nutrient, so that when the straw is decomposed, carbon and nitrogen are less imbalanced. Therefore, microorganisms must absorb nitrogen from the soil to make up for it. The phenomenon of contending for nitrogen makes it particularly important to add nitrogen fertilizer when straw is returned to the field. It can accelerate the rapid decomposition of straw and ensure the vigorous growth of crops at the same time. After straw returning, 6kg urea or 18kg ammonium bicarbonate was added per acre.
4 The straw decay agent corn straw decomposer is a kind of biological bacteria, which can be quickly propagated under suitable conditions after being applied to the soil. The enzymes produced by microorganisms can quickly decompose the organic substances in the straw, so that the straw releases nitrogen, phosphorus, potassium and more. Trace elements for crop absorption and utilization. On the day of comminution of straw, mix 2kg of decomposed agent with 5kg of moist fine soil (decorative agent cannot be directly mixed with the bactericide) and mix it evenly, sprinkle on the crushed corn stalk, and then apply 6kg of urea or 18kg of ammonium bicarbonate per acre. Adjust the ratio of carbon and nitrogen in the straw to accelerate the decay of the straw. Rotate the tiller (at least twice) after it has been sprinkled to break up the corn roots and mix the straw with the soil.
5 Apply base fertilizer and plough the land. After rotating tillage, prepare prepared wheat formula fertilizer (formulation 25-15-5) 40-50kg or compound fertilizer 40-50kg or nitrogen fertilizer, phosphate fertilizer, and potassium fertilizer evenly on the crushed straw, and immediately adopt deep ploughing machinery to plough the soil depth to 25cm. (7-8 inches) or more, turn corn stalks into soil. Not every year after two years of deep plowing, we must go deeper and deeper.
6 Improving the quality of soil preparation for planting Straw returning to the field After the ploughing is completed, the target should be penetrated so that the soil can be compacted and prevented from emptying. The seedlings can be quickly repressed after sowing, which will help germinate and take root, avoiding the phenomenon of wheat rooting.
(7) Large-scale straw crushers with relatively large horsepower should be used, so that the straw is finely crushed, and the rotation is steeper, and the straw is evenly mixed with the soil.
8 On the straw-reduced plots with insufficient lye, after the emergence of wheat, it is used to make up for the flooding, which can promote the wheat tiller, promote the decomposition of the straw, and compact the soil tillage layer.
Autoclave Sterilizer Products,Washer Disinfector,Autoclave Sterilizer,Atomizing Disinfection Robot
Guangdong Widinlsa International Co.Ltd , https://www.guangdongwidinlsa.com