利用湖南省近8 a 789个杂交中稻3414肥效试验结果,分析获得杂交中稻施肥技术参数,依据斯坦福施肥公式W=(UNs)/R,建立了氮、磷、钾实际施肥纯量(Y)与目标产量(X1)、土壤速效养分检测值(X2)的二元一次回归推荐施肥数学模型;在Excel中置入数学模型,建立了推荐施肥专家系统,直接输入目标产量和土壤养分数据,可精准计算输出施肥量和施肥方案,简化了数学模型的计算和应用方法,推动了测土配方施肥技术成果的应用。
【英文摘要】
Based on the technical parameters of fertilization from the experimental results of 789 ″3414″ fertilizing trials for medium hybrid rice over eight years in Hunan Province,the fertilizing mathematic models of the binary linear regression equation between the amount of fertilizers( N,P,K) to be applied( Y) and the rice yield target( X1) and the content of soil available N,P,K nutrients( X2) were established according to the Standford Fertilization Formula W =( U-Ns) / R. The models were then imbedded into th...
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