盐源县玉米“3414”肥效试验及效益研究

Study on Fertilizer Trial and Economic Benefit Research of corn "3414" in Yanyuan County

为掌握盐源县玉米需肥规律,进行了玉米"3414"肥效试验。结果表明:大多数生长性状之间基本存在正相关关系,玉米的实际产量与氮、磷、钾的施入量存在极显著的相关关系,综合效益最好时产量为646.3kg/667m2,最佳施肥量纯氮31.965kg/667m2、P2O517.502kg/667m2、 K2O2.788kg/667m2,投入产出比达到了5.31。

In order to know corn requiring fertilizer rules in Yanyuan County, this paper made an fertilizer trial of corn ＂3414＂. The results show that most of growth traits have positive correlation between basic existence,and the actual production of corn has a significant correlation with the amount of nitrogen,phosphorus and potassium. From the results,it is also shown that when the comprehensive benefit gets best,the corn production reaches 646.3 kg/mu,and the optimal fertilization amount contain pure nitrogen fertilizer 31. 965kg/667m2 ,P2O5 17. 502kg/667m2 and K2O 2. 788kg/667m^2, therefore, the input-output ratio reaches 5.31.