施磷水平对不同茬口下冬小麦生长发育及产量的影响
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薛华龙,娄梦玉,李雪,王飞,郭彬彬,郭大勇,李海港,焦念元
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Effects of Phosphorus Application Levels on Growth and Yield of Winter Wheat Under Different Crops for Rotation
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XUE HuaLong,LOU MengYu,LI Xue,WANG Fei,GUO BinBin,GUO DaYong,LI HaiGang,JIAO NianYuan
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表5 不同茬口下冬小麦产量与施磷水平的关系
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Table 5 Relationship between winter wheat yield and P levels at different crops for rotation
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茬口
Crops for rotation | 产量与施磷量曲线方程
Equation of yield and phosphorus curve | 最高产量
Maximum yield
(kg·hm-2) | 最佳经济产量
Optimum economic yield
(kg·hm-2) | 最高产量施磷量
Maximum yield phosphorus application (kg·hm-2) | 最佳经济产量施磷量
Optimum economic yield of phosphorus application (kg·hm-2) | 决定系数
Decision coefficient | | PCR | y=-0.2156x2+78.862x+3282.1 | 10493.6 | 10487.7 | 182.9 | 177.0 | R²=0.9867 | | MCR | y=-0.191x2+74.834x+2606.2 | 9936.2 | 9927.8 | 195.9 | 189.3 | R²=0.9859 | | ICR | y=-0.2269x2+83.709x+3029.2 | 10749.8 | 10742.7 | 184.5 | 178.9 | R²=0.9902 |
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