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(一)土壤对一季作物的供氮量据统计,太湖地区水稻土耕层土壤全氮含量一般变动于0.10%—0.19%之间,其平均值和标准差分别为0.149%和0.052%。从平均值来看,以囊水水稻土的全氮含量最高,依次为爽水水稻
(I) Soil Nitrogen Supply to a Quarterly Crop According to statistics, the total nitrogen content of paddy soil in Taihu Lake generally fluctuates between 0.10% and 0.19%, with the mean and standard deviation of 0.149% and 0.052% respectively. From the average point of view, the highest total nitrogen content of paddy soil is paddy rice