新疆巴里坤县春小麦测土配方施肥土壤养分校正系数研究

利用“3414”试验数据,对新疆巴里坤县4个乡镇的土壤养分校正系数进行研究.结果表明,巴里坤县土壤养分校正系数（y）随土壤养分含量（x）的增加而降低,二者之间存在y＝a＋bln（x）的函数关系.土壤氮素、磷素和钾素养分校正系数与土壤碱解氮、速效磷（P2 O5）和速效钾（K2 O）的函数方程分别为：y ＝1．7836-0．2571ln（x）,y ＝4．3733-0．9731ln（x）和y＝2．0865-0．3030ln（x）,根据函数方程,计算出巴里坤县不同肥力土壤所对应的土壤养分校正系数.

A Study on Soil Nutrient Correction Coefficient of Soil Testing and Fertilizer Recommendation for Spring Wheat Culture in Balikun County

Using “3414”experiment data,soil nutrient correction coefficient of Balikun county four villaG ges and towns were studied.The results showed that soil nutrient correction coefficient decreased with the increases in soil nutrient contents.There were y=a＋bln （x）functional relations between the two.The reG lationships between soil N nutrient correction coefficient （y）and soil alkaline hydrolytic nitrogen content （x）were y=1.7836-0.2571ln（x）,y =4.3733-0.9731ln （x）and y =2.0865-0.3030ln （x）;The relaG tionships between soil P nutrient correction coefficient （y）and soil P nutrient （P2 O5 ）content （x）were y=4.3733-0.9731ln （x）;the relationships between soil N nutrient correction coefficient （y）and soil N nuG trient （K2 O）content （x）were y =2.0865-0.3030ln （x）.According to this power function,soil nutrient correlation coefficients corresponding to soil nutrient content ranges were obtained in Balikun county.