Method for returning crop stalks to field

Abstract

The invention discloses a method for returning crop stalks to a field. The method comprises the following steps of S1, digging a sunken composting pool in a crop harvesting season; S2, smashing the harvested crop stalks, pouring the smashed crop stalks into the sunken composting pool, spreading the crop stalks until the thickness is 0.8 m-1m, covering the crop stalks with a layer of field soil with the thickness of 5 cm, compacting, and watering until the crop stalk powder and the field soil are wet to obtain a pretreated fertilizer pile; S3, covering the surface of the pretreated fertilizer pile with 1 layer-2 layers of agricultural mulching films, and standing to enable the crop stalk powder to be subjected to water-logged composting in the sunken composting pool until the crop stalk powder becomes a decomposed fertilizer; S4, when the next harvesting season begins, removing the agricultural mulching films, directly taking the decomposed fertilizer, and uniformly scattering the decomposed fertilizer into the field after the crops are harvested and before ploughing; and S5, repeating the steps S2-S4. According to the method for returning the crop stalks to the field, the harm to soil and crops caused by traditional direct crop stalk returning is avoided, waste gas and waste water generated during water-logged compost can be prevented from leaking to pollute the environment, the quality of the soil and the crops can be improved, the implementation is simple, and continuous circulation can be realized.

Description

technical field [0001] The invention relates to the related technical field of straw returning to the field, in particular to a method for returning straw to the field. Background technique [0002] In the past, there were many manure cellars in rural fields, which were used to store human and livestock manure to make farmyard manure. Manure cellars played an important role in agricultural production in the past. In recent years, chemical fertilizers have gradually been popularized and applied. Their simple and convenient use, less labor and production costs than traditional farmyard manures have prompted agricultural mechanized production to rely on them, and environmental protection. The accumulation of many problems has made the value of manure pits gradually withdraw from the historical stage of agricultural planting. However, in today's agricultural planting work, a large amount of chemical fertilizers have been abused, causing the land to lack the necessary nutrients ...

AI Technical Summary

Problems solved by technology

[0005] However, although the current prior art discloses some methods of returning straw to the field, most of them use the method of directly returning the straw to the field after being chopped. Returning to the field, when it rots and decomposes, it will decompose and release a large amount of organic acids, carbon dioxide and other substances harmful to the growth of crops, so that it will not only fail to achieve the effect of fertilizing the field, but will have side effects on the growth of crops and reduce production. The environment causes a lot of pollution; moreover, this method cannot effectively turn all the straw under the soil layer, the straw left on the surface will affect the sowing, and the straw buried under the soil layer is also in a disordered state, which causes A lot of straw extends from the bottom of the soil to the surface to form a gap between the soil, which is not conducive to the growth of crops, especially some soft and tough straws such as straw and wheat straw are very hindering to the operation of the rotary tiller, even if they are buried under the soil layer. A large number of hollows propped up by straws will be formed, causing faults to form up and down the soil. These faults will prevent the roots of plants from reaching deep into the soil, and will make the surface soil dry easily. A slight drought will cause dead seedlings On the other hand, the straws are directly returned to the field without fermentation and decay, and the crops are relatively immature in the initial stage of growth, and the requirements for the growth environment are relatively high. All of these will have adverse effects, and because the holes propped up by these straws are just used as natural hiding places and hatching places for laying eggs by agricultural pests, resulting in an increase in pests, which will cause great harm to the growth of crops, and even cause crop production reduction; When this method is used in a paddy field, because there is a certain depth of water in the paddy field, the straw on the surface will float on the water surface, and due to the influence of harrowing or wind and waves, the floating straw will be concentrated in a certain place in the field for transplanting. The transplanting of traditional rice planting causes difficulties and obstacles. The straw under the soil surface is too concentrated and forms a group, which also makes it impossible for the seedlings to be inserted. On the soil surface, rice seeds scattered on the straw cannot germinate and grow, resulting in reduced yields

Images