局部根区灌溉水肥耦合效应的研究进展

Research Progress on Coupling Effects of Water and Fertilizer Supply under Partial Root-Zone Irrigation

综述了局部根区灌溉水肥耦合效应的研究背景、研究进展。局部根区灌溉水肥耦合在节水条件下可以提高作物对水分、养分的利用率,稳定作物产量,提高品质;有利于降低硝态氮的淋洗,增加耕层残留,增加被作物吸收利用的机会;有利于减少土壤气态氮挥发,防止对大气环境的污染。同时,该方式可以增加土壤微生物数量,提高土壤酶活性等。

The research background,advance of water and fertilizer coupling under partial root-zone irrigation was reviewed.Based on the reasonable regulation,the way can improve the availability of crops in absorbing water and nutrient,stabilize crops＇ growth and yield,and improve crops＇ quality.It is beneficial to the accumulation of soil nitrogen in the surface,thus increasing the chance of being absorbed by crops,and beneficial to reduce the volatile of the soil gaseous nitrogen,thus inhibiting the pollution on atmospheric environment.At the same time,it can increase the quantity of the soil microorganism and improve the soil enzyme activity.