主要栽培措施对北方春玉米产量贡献的定量评估

杨哲,于胜男,高聚林,田甜,孙继颖,魏淑丽,胡树平,李荣发,李从锋,王志刚

Quantitative Evaluation of the Contribution of Main Management Factors to Grain Yield of Spring Maize in North China

YANG Zhe,YU ShengNan,GAO JuLin,TIAN Tian,SUN JiYing,WEI ShuLi,HU ShuPing,LI RongFa,LI CongFeng,WANG ZhiGang

表2 2017-2018年替换栽培措施因子对玉米产量差的影响及其对产量的贡献率

Table 2 Effect of management factors on yield gap and its contribution rate to grain yield of maize

对照 模式 Control 增减措施因子 Supplemented or withheld 包头 Baotou 赤峰 Chifeng 平均值 Average 产量差 Yield gap (t·hm-2) 贡献率 Contribution rate (%) 产量差 Yield gap (t·hm-2) 贡献率 Contribution rate (%) 产量差 Yield gap (t·hm-2) 贡献率 Contribution rate (%) 农户模式FP 较FP增减 Compared with FP + 土壤耕作Tillage 0.6 4.6 0.3 3.5 0.4 4.0 + 养分管理Fertilization 1.4* 10.7* 0.8 7.8 1.1 9.2 + 品种Variety 0.7 5.1 0.5 5.1 0.6 5.1 + 种植密度Population 2.1* 16.2* 1.5* 15.3* 1.8* 15.7* + 防病Fungicide 0.6 5.0 0.4 3.6 0.5 4.3 综合高产HT 较HT增减 Compared with HT - 土壤耕作Tillage -0.5 -3.0 -0.3 -2.1 -0.4 -2.6 - 养分管理Fertilization -1.1* -7.6* -0.9 -7.1 -1.0 -7.4 - 品种Variety -0.5 -3.0 -0.4 -3.7 -0.5 -3.3 - 种植密度Population -2.0* -13.4* -1.7* -13.8* -1.9* -13.6* - 防病Fungicide -0.6 -3.6 -0.4 -3.1 -0.5 -3.3 FP vs HT 2.3* 15.7* 2.2* 19.8* 2.3* 17.8*