嗪吡嘧磺隆对不同水稻品种的安全性研究

张苏新, 李广雨, 王春, 王芊, 黄元炬

Study on the Safety of Metazosulfuron to Different Rice Varieties

Zhang Suxin, Li Guangyu, Wang Chun, Wang Qian, Huang Yuanju

表1 不同时期施药对水稻生长指标的影响

Table 1 Effects of different application times on rice growth indicators

施药时期 Application timing 施药剂量 Application dosage (g a.i./hm2) 龙粳31 Longjing 31 五优稻4号Wuyoudao 4 株高 Plant height (cm) 株高抑制率 Plant height inhibition rate (%) 鲜重 Fresh weight (g) 鲜重抑制率 Fresh weight inhibition rate (%) 株高 Plant height (cm) 株高抑制率 Plant height inhibition rate (%) 鲜重 Fresh weight (g) 鲜重抑制率 Fresh weight inhibition rate (%) 移栽前5 d施药 Apply the herbicide 5 days before transplanting 0.00 30.17±0.44a － 5.76±0.33a － 33.67±0.17a － 6.09±0.13a － 49.50 29.33±0.64ab 2.76 5.59±0.18a 3.01 31.23±0.52b 7.23 5.48±0.21b 10.01 74.25 28.70±0.06bc 4.86 5.48±0.24a 4.80 30.07±0.72bc 10.69 5.27±0.22b 13.46 99.00 27.83±0.32cd 7.73 5.20±0.25a 9.78 28.93±0.35c 14.06 5.01±0.23bc 17.78 148.50 26.77±0.49d 11.27 4.98±0.13a 13.48 27.20±0.56d 19.21 4.61±0.19c 24.34 移栽前3 d施药 Apply the herbicide 3 days before transplanting 0.00 32.67±1.20a － 5.91±0.33a － 36.27±0.87a － 6.70±0.19a － 49.50 31.07±0.73ab 4.90 5.54±0.66a 6.26 31.87±0.44b 12.13 5.63±0.28b 16.01 74.25 30.23±0.67abc 7.45 5.43±0.17a 8.12 30.40±1.65bc 16.18 5.34±0.16bc 20.29 99.00 29.13±0.64bc 10.82 5.16±0.38a 12.75 29.27±0.66bc 19.30 5.14±0.07bc 23.27 148.50 27.73±0.73c 15.10 4.95±0.23a 16.19 27.50±0.17c 24.17 4.68±0.32c 30.23 移栽后3 d施药 Apply the herbicide 3 days after transplanting 0.00 38.50±1.32a － 11.38±0.64a － 40.83±1.01a － 12.99±0.65a － 49.50 37.33±0.68ab 3.03 10.64±0.65a 6.56 37.67±0.29b 7.76 11.41±0.50ab 12.14 74.25 36.57±1.03ab 5.02 10.39±0.95a 8.70 36.47±0.61bc 10.69 11.00±0.92ab 15.27 99.00 35.63±1.35ab 7.45 10.18±0.26a 10.57 34.37±0.35cd 15.84 10.54±0.60b 18.87 148.50 34.73±0.32b 9.78 9.92±0.24a 12.86 32.57±0.87d 20.24 9.65±0.30b 25.72 移栽后5 d施药 Apply the herbicide 5 days after transplanting 0.00 41.33±0.60a － 15.27±086a － 43.50±0.29a － 16.63±0.42a － 49.50 41.67±0.33a -0.81 15.09±0.96a 1.22 41.13±0.60b 5.44 15.08±0.92a 9.28 74.25 40.67±1.42a 1.61 14.81±0.59a 3.03 39.30±0.58bc 9.66 14.56±1.32a 12.45 99.00 39.97±1.64a 3.31 14.43±0.35a 5.52 38.13±1.17cd 12.34 13.95±1.80a 16.12 148.50 38.77±1.48a 6.21 14.01±0.41a 8.29 36.00±0.50d 17.24 13.05±1.25a 21.49