氮肥施用条件下大豆固氮能力-产量-品质的综合评价

Comprehensive Evaluation of Nitrogen Fixation Capacity-Yield-Quality of Soybean with Nitrogen Fertilizer Application

为评价不同氮肥施用条件下不同生育时期大豆品种根瘤固氮能力、产量和品质协同提升情况,文章以不施氮肥处理作为对照,采用主成分分析和隶属函数加权法对不同处理下的大豆根瘤固氮能力、产量和品质进行综合评价。结果表明,不同氮肥处理条件下高蛋白和低蛋白大豆根瘤固氮、产量和品质指标响应不同,各指标间相关性较高。主成分分析表明,4个主成分为影响不同处理大豆根瘤固氮、产质量协同提高系数的主要指标。隶属函数评价和分析计算表明,不同处理条件下低蛋白大豆品种根瘤固氮、产质量协同提高能力大小表现为:VOS-DN>ROS-DN>ROS-GN>ROS-CK>VOS-CK>VOS-GN;高蛋白大豆品种表现为:RPS-DN>VPS-DN> RPS-CK>VPS-CK>VPS-GN>RPS-GN,低蛋白大豆综合评分高于高蛋白大豆。

In order to evaluate the synergistic enhancement of nodulation,nitrogen fixation capacity,yield and quality of soybean varieties with various amounts of nitrogen fertilizers rates and application periods,this article took the no nitrogen fertilizer treatment as the control,and the principal component analysis and the weighting method of the subordinate function were used to comprehensively evaluate the nodulation,nitrogen fixation capacity,yield and quality of soybeans under different treatments.The results showed that the responses of nodulation,nitrogen fixation capacity,yield and quality indexes of high-protein and low-protein soybeans under different nitrogen fertilizer treatments were different,and the correlation between the indexes was high.The principal component analysis showed that four principal components as the main indexes affecting the synergistic improvement coefficients of nitrogen fixation and yield and quality of soybean nodulation under different treatments.Further evaluated,analyzed and calculated by the affiliation function,the magnitude of nodulation,nitrogen fixation and yield quality synergistic improvement ability of low-protein soybean varieties under different treatments was shown as follows:VOS-DN>ROS-DN>ROS-GN>ROS-CK>VOS-CK>VOS-GN;whereas,for the high-protein soybean varieties,the magnitude of the synergistic improvement ability of rhizomatous nitrogen fixation and yield quality under different treatments was shown as follows:RPS-DN>VPS-DN>RPS-CK>VPS-CK>PS-GN>RPS-GN;and the low-protein soybean varieties scored higher than high-protein soybeans.