氮磷钾配施对小麦植株养分吸收利用和产量的影响

龙素霞,李芳芳,石书亚,赵颖佳,肖凯

Effects of Coordinately Application of N, P, and K on Nutrient Contents in Plants and Soils and Wheat Yield

Suxia Long,Fangfang Li,Shuya Shi,Yingjia Zhao,Kai Xiao

表2 不同处理的产量构成因素、产量和收获指数

Table 2 Yield components, yields and harvest indices under different treatments

处理 Treatment 穗数(×104/hm2) Spike number 穗粒数 Spike number per spike 千粒重(g) 1000-grain weight 产量(kg/hm2) Yield 增产幅度(%) Yield increase 收获指数 Harvest index CK 629.25±12.24c 30.83±1.03d 39.61±1.21c 6 916.00±232.12d - 0.501±0.002a T1 687.90±14.08b 32.30±1.20c 40.41±0.83bc 8 080.56±310.07c 16.84 0.479±0.003b T2 730.20±15.33ab 33.12±1.32bc 41.29±1.02ab 8 987.04±233.98b 29.95 0.480±0.003b T3 728.10±15.06ab 34.12±1.28ab 41.42±0.68a 9 260.64±208.16b 33.90 0.478±0.006b T4 742.95±11.86ab 34.87±1.43a 41.86±0.82a 9 760.56±286.13a 41.13 0.481±0.005b T5 742.01±15.32ab 34.02±1.35a 41.37±0.56a 9 399.87±302.18b 35.91 0.439±0.003c T6 757.20±13.93a 34.83±1.20a 39.61±0.48c 9 896.87±282.10a 43.10 0.442±0.003c