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采用微型蒸渗仪测定了冬小麦农田的棵间蒸发量,分析了秸秆粉碎还田与化肥配施和常规施肥两种措施下不同品种冬小麦生育期棵间蒸发量的差异。结果表明:秸秆粉碎还田与化肥配施对棵间蒸发有一定的影响,在各个生育期差异程度有所不同;两种肥料措施的逐日棵间蒸发量规律基本一致;秸秆粉碎还田与化肥配施对棵间蒸发的抑制效果明显,抑制蒸发率在8.02%～11.60%之间,可以使12 mm左右的土壤水分由无效耗水转化为作物蒸腾水;不同品种间的棵间蒸发量差异很小。
The evapotranspiration of winter wheat field was measured by micro-lysimeter, and the differences of evapotranspiration among winter wheat cultivars with different types of straw mulching and fertilizer application and conventional fertilization were analyzed. The results showed that: straw crushing and fertilizer application had certain influence on the evaporation among trees, and the differences in the different growth stages were different; the law of day-by-day evaporation of two fertilizer measures was basically the same; The inhibition effect of spraying on the intercropping system was obvious, and the evaporation rate was between 8.02% and 11.60%, soil moisture of about 12 mm could be converted into crop transpiration water by ineffective water consumption. The difference of transpiration among different cultivars Very small.