Mechanical stubble cleaning and straw returning method

Abstract

The invention relates to a mechanical stubble cleaning and straw returning method. The method specifically comprises the steps of (1) using a stubble cleaning machine to conduct stubble cleaning on straw left after harvest of crops on the whole land in a harvest season; (2) equally dividing the whole land into 5-10 land blocks, collecting the whole straw on the whole land, intensively stacking the straw on one land block, and then letting the land block lie fallow for one season and sowing next-stubble crops on the other land blocks where the straw is not stacked; (3) using the stubble cleaning machine to conduct stubble cleaning on the land block where the straw is intensively stacked for twice, spraying decay accelerating materials on the straw, conducting rotary tillage and conducting secondary rotary tillage after a month. By adopting the mechanical stubble cleaning and straw returning method, the ground surfaces of the land blocks where the straw is collected are high in crop sowing quality and yield, and great in economical benefit and has fewer plant diseases and pests, and the seedlings on the ground surface grow well; meanwhile, the straw degradation capability of soil in the land block where the straw is intensively collected is significantly improved, the organic content of the soil is increased, and the land capability is improved.

Description

technical field [0001] The invention belongs to the technical field of soil fertilizers, and in particular relates to a method for mechanical stubble removal and straw returning to the field. Background technique [0002] At present, with the progress of the times and the development of agriculture, the difficult disposal of straw has become a hot issue of concern to the whole society, and it is also a bottleneck issue in the development of modern agriculture. The country has invested a lot of manpower, material resources and financial resources to solve the problem of straw resource utilization, such as straw power generation, biogas production, composting, edible fungus raw materials, etc. Due to the large production volume of straw and the short disposal time, these methods are difficult to deal with a large amount of farmland straw. [0003] The mechanical stubble removal and returning of straw to the field does not need to remove the straw, which is simple and convenie...

AI Technical Summary

Problems solved by technology

However, there are many problems in the current promotion of mechanical stubble removal and straw returning to the field; many experiments and practices have shown that the soil has a certain ability to purify straw, but the amount of soil purified straw is generally less than 1 / 2 of the growth of single-season crops, and the excess will be It will have adverse effects on the growth of the next stubble crops. The more straws are returned to the field, the greater the impact; the current promotion of mechanical stubble removal straws can crush the long straws into shorter straws and mix them with the topsoil, increasing the farmland. Straw digestion ability can increase the straw digestion capacity of farmland to 1 / 2 of the crop straw production in one season, but there is still the problem that all straw cannot be digested in the farmland, especially when the straw is unevenly distributed in the field during harvesting, and under the influence of places with a lot of straw The sowing of stubble crops and the growth of seedlings lead to many diseases and insect pests, which will eventually affect the growth and yield of stubble crops. This is the main reason why farmers are not very enthusiastic about mechanical stubble removal and straw returning to the field.

Images