测土配方施肥中有效养分系数的测定及应用效果研究

Determination of Available Nutrient Coefficient of Formula Fertilization by Soil Testing and Study of Application Effect

试验分别在黑龙江省的白浆土、黑土、水稻土、暗棕壤等土壤类型上分水、旱田不同种植方式进行了多点次的试验研究。并将所取得的相关数据利用有效养分系数计算公式进行计算,获得了不同土壤类型在测土配方施肥实际运用中的有效养分系数。对有效养分系数和其相对应的土壤供肥量之间进行了回归分析,结果达到极显著水平。即土壤养分测定值越小,土壤有效养分系数越大,肥料利用率也越高。最后根据测得的有效养分系数进行复混肥配方的筛选试验,分别得到三大作物(玉米、大豆、水稻)的专用肥配方。

The coefficient of soil available nutrients of different soil type in testing formula was gained. At the same time, the regression analysis between the available nutrient coefficient and its corresponding fertilizer volume supplied by soil was conducted,the result indicated extremely significant difference. According to the screening test of formula fertilization on availa ble nutrient coefficient,the formulations of specialty fertilizer of major crops （corn,soybean,rice） were acquired. It played a positive role in guiding farmers to use fertilizer scientific, rational and economic, and achieved good economic and social benefits.