缓释尿素配施普通尿素对双季稻养分的供应特征

张木, 唐拴虎, 黄巧义, 逄玉万, 易琼, 黄旭, 李苹, 付弘婷

The Nutrient Supply Characteristics of Co-Application of Slow-Release Urea and Common Urea in Double-Cropping Rice

Mu ZHANG, ShuanHu TANG, QiaoYi HUANG, YuWan PANG, Qiong YI, Xu HUANG, Ping LI, HongTing FU

表1 不同施肥处理早、晚稻产量及构成要素

Table 1 Yield and yield components of early and late rice affected by different fertilization treatments

处理 Treatment 产量 Yield (kg·hm-2) 有效穗数 Effective panicle 穗粒数 Grain 千粒重 1000-grain weight (g) 结实率 Setting rate (%) 早稻 Early rice CK 5730.0±21.0d 9.9±0.5c 135.6±3.2c 22.4±0.3ab 91.1±0.51c 100% SRU 7177.5±328.5ab 13.7±0.3ab 213.5±9.6a 21.8±0.4b 94.0±1.0ab 75% SRU + 25% CU 7617.0±96.0a 15.0±1.0a 210.9±3.6a 23.1±0.5a 92.2±0.76bc 50% SRU + 50% CU 6807.0±112.5bc 14.4±0.7ab 209.4±2.8a 22.5±0.03ab 92.5±0.48bc 25% SRU + 75% CU 6441.0±310.5bcd 13.3±0.9ab 195.2±3.8ab 22.6±0.3ab 92.8±1.0bc 100% CU 6276.0±301.5cd 12.4±0.6b 186.4±13.0b 23.0±0.3a 95.7±1.0a 晚稻 Late rice CK 5809.5±61.5b 12.3±0.3b 178.8±7.2b 20.4±0.1a 89.3±0.4a 100% SRU 6262.5±508.5ab 14.0±0.6ab 192.4±6.0b 19.1±0.5b 88.4±1.6a 75% SRU + 25% CU 7062.0±469.5a 15.2±0.6a 209.9±2.4a 19.4±0.1b 87.3±0.7a 50% SRU + 50% CU 6504.0±240.0ab 13.7±0.3ab 182.0±0.6b 19.5±0.2b 86.9±1.0a 25% SRU + 75% CU 6397.5±637.5ab 15.0±0.2a 179.5±1.3b 19.2±0.3b 88.3±0.9a 100% CU 6454.5±48.0ab 13.6±1.1ab 185.4±5.5b 19.6±0.1b 87.6±0.3a