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一、基本情况文中所说的耗水量,指叶面蒸腾量、棵间蒸发量、土壤深层渗漏量三者之和。在分析棉花产量与耗水量时,资料采用永济小樊灌区、临猗夹马口灌区、新绛鼓水灌区、平陆红旗灌区等4个试验站1980～1988年的试验资料。 4个试验站土壤容重1.36～1.4,均为壤土,孔隙度40～50％,田间持水量21.5～23％;地下水埋深10米以上,试验不受地下水影响。土壤肥力按不同施肥标准!产量水平分为3种:高产田亩产75公斤以上,中产田亩产50～75公斤,低产田亩产50公斤以下。
First, the basic situation The article said the water consumption, refers to the amount of leaf transpiration, evaporation between the soil, soil depth of the three and the amount of leakage. In the analysis of cotton yield and water consumption, the experimental data of four pilot stations from 1980 to 1988 in Yongfan Xiaofan Irrigation District, Linqu Jiamakou Irrigation District, Xinjiang Drum Irrigation District and Pinglu Hongqi Irrigation District were used. The soil bulk density of the four experimental stations ranged from 1.36 to 1.4, both of which were loam, with porosity of 40-50% and field capacity of 21.5-23%. The groundwater depth was more than 10 meters and the experiment was not affected by groundwater. Soil fertility according to different fertilization standards! Yield levels are divided into three kinds: high-yielding mu yield of 75 kilograms or more, middle-yielding mu 50-75 kilograms, low-yielding acres of 50 kg or less.