作物水肥耦合类型量化方法在华北冬小麦水氮配置中的应用

张经廷,吕丽华,张丽华,董志强,姚艳荣,姚海坡,申海平,贾秀领

A Novel Method for Quantitating Water and Fertilizer Coupling Types and Its Application in Optimizing Water and Nitrogen Combination in Winter Wheat in the North China Plain

JingTing ZHANG,LiHua LÜ,LiHua ZHANG,ZhiQiang DONG,YanRong YAO,HaiPo YAO,HaiPing SHEN,XiuLing JIA

Table 2 Water nitrogen coupling types of different water and nitrogen combinations in winter wheat basing on a 10-year located field experiment

施氮1) 水平 N rate 10年平均产量 Average yield of 10 years, Y (kg·hm-2) W2Nx的相对产量 Relative yield in W2Nx , RY (W2Nx) W2Nx水氮 耦合类型6) Water nitrogen coupling type in W2Nx 氮增产率 Yield increase derived from N-fertilizer (%) 水增产率 Yield increase derived from irrigation (%) 水氮互作 Water nitrogen interaction 1水 W1 2水 W2 氮1) Nitrogen (N) 水2) Water (W) 真实值3) Actual value 理论值4) Theoretical value 真实值与理论值差异性5) Significance of variance 1水 W1 2水 W2 N0(N0) 3555.6 3750.5 1.00 1.05 5.48 N1(N60) 6573.6 6542.9 1.85 1.00 1.84 1.95 * Ant 84.88 74.45 -0.47 增水限氮,增氮限水 Restrict mutually N2(N120) 7252.9 8427.6 1.10 1.16 1.28 1.10 * Syn 10.34 28.80 16.19 增水促氮,增氮促水 Promote mutually N3(N180) 7350.2 8612.9 1.01 1.17 1.19 1.18 no Add 1.34 2.20 17.18 no no N4(N240) 7369.2 8460.1 1.00 1.15 1.15 1.17 no Add 0.26 -1.77 14.80 no no