论文部分内容阅读
机械深耕可提高土壤蓄水抗旱能力,增强土壤的透气性能,有利于微生物的繁殖,改善土壤的理化性能和肥力,使作物根系发达,从而提高作物的产量。但是,由于选定拖拉机后,其功率是一定的,与之配套的犁是按拖拉机的额定功率设计的,一般最大耕深不超过27厘米。如果增加耕作深度,拖拉机会超负荷作业,甚至拉不动。因此,只好摘去一个犁铧用减小耕幅降低生产率的办法来增加耕深。这样,四铧犁去一铧就会降低生产率25%、三铧犁降低33%、二铧犁降低50%。生产率降低后,拖拉机经营者为了不减少收入,相应提高了作业收费标准,从而增加了农民的负担,影
Mechanical deep plowing can improve soil water resistance and drought resistance, and enhance the permeability of the soil, is conducive to the reproduction of microorganisms to improve soil physical and chemical properties and fertility, crop root system, thereby increasing crop yield. However, due to the selected tractor, its power is constant, the accompanying plow is designed according to the rated power of the tractor, and the maximum maximum plowing depth is no more than 27 cm. If you increase the depth of farming, tractors will be overworked, and even pull can not move. Therefore, we had to pick up a ploughshare to reduce tillage and reduce productivity to increase plowing. In this way, a four-plow to a plow will reduce the productivity of 25%, three plow reduced by 33%, two plow reduced by 50%. After reducing productivity, tractor operators in order not to reduce revenue, a corresponding increase in operating fees, thus increasing the burden on farmers