通过田间长期定位试验，探讨了耕作措施对农田黑土耕层水分的影响。
This study determined infiltration into soils on black farmland under different tillage systems by long-term experiment.
采用夏闲期并苗期秸秆覆盖，能有效提高耕层土壤水分的数量水平和能量水平；
The levels both of amount and energy of soil water were remarkably raised by adoption of mulch with straw in seedling stage as well as in summer fallow time in some cases.
沟灌耕层土壤蒸发损失的水分大于滴灌大于渗灌。
Compared with dripping and seeping irrigation, evaporation loss of water from topsoil is the most in furrow irrigation.
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