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地膜覆盖栽培花生,畦面及两侧完全被薄膜覆盖,薄膜下土壤水分和空气的补充和交换主要通过畦沟来实现。因此,畦沟土壤的状况如何,直接影响膜下土壤的理化性状。地膜花生中耕深松对畦沟土壤有良好作用,其表现主要有以下几点。1.提高畦沟土壤的通透性,加速膜内外的气体交换。花生根系在生长过程中要进行呼吸,不断消耗氧气,排出二氧化碳气。土壤微生物的活动也使土壤氧气减少,二氧化碳气增加。如果对畦沟进行中耕作业,使土壤变得松暄,增加气相比例,有利于膜内外的气体交换,促进根系生长。
Mulch mulching, mulberry noodles and both sides completely covered by the film, the film under the soil moisture and air to supplement and exchange mainly through the ditch to achieve. Therefore, the situation of the furrow ditch soil directly affects the physical and chemical properties of the soil under the mulch. Plastic filming peanut cultivating deep pine on the furrow soil has a good effect, its performance mainly in the following points. 1. Improve the permeability of the furrow ditch soil, accelerate the gas exchange inside and outside the membrane. Peanut roots in the growth process to be breathing, continuous consumption of oxygen, carbon dioxide emissions. Soil microbial activities also reduce soil oxygen and increase carbon dioxide. If tillage ditch tillage operations, the soil becomes loose Xuan, increase the proportion of gas, is conducive to membrane exchange of gas inside and outside and promote root growth.