纹枯灵与担菌胺防治水稻纹枯病田间药效试验报告

The Experiment Report on Effect of Fungicide Basitic and Moncut on Control of Rice Sheath Blight in Field

田间试验了75％纹枯灵可湿粉剂、20％担菌胺可湿粉剂和5％井冈霉素对水稻纹枯病的防治效果。结果表明,用纹枯灵和担菌胺不同剂量处理的小区,水稻纹枯病的相对病情指数或相对病害增长率(与空白对照相比),显著低于用井冈霉素处理的小区。每亩用纹枯灵46.8g(有效成份)和担菌胺10g的防治效果分别达到 76.3％和77.7％,增产效果分别达到34.4％和33.2％。施药后纹枯病病指变化曲线表明,每种药剂对水稻纹枯病的持效期均为25天左右。

The effect of basitic , moncut and vilidamyzin to control sheath blight of rice(Rhizoctonia solani sasakii)were evaluated by field trial in Zhengzhou and Huojia of Henan Province 1994. The result showed that the relative disease index or rate of development of rice sheath blight in plots treated by differant formula of 75% basitic and 20% moncut were significantly lower than that in plots treated by normal formula of 5% vilidamyzin. Control effect and rate of yield increase of spraying with 45. 8 gram (ai. ) /mu of basitic and 10 gram (ai. ) /mu of moncut were 76. 3% and 77. 7% , 34. 4% and 33: 2% , respectively. The curve line of the disease development after spraying fungicide showed that the effective period of each fungicide for rice sheath blight was about 25 days.