印度植物病理学家Sengupta T.K于1984、1985年夏季和冬季,以随机区组设计对亚硒酸钠、氯化铁等20种化合物进行了田间试验,发现其中有10种化合物提供了实际性保护作用,减少稻瘟病发病率72～89％。另外7种减少发病率60～68％。处理植株几乎没有枯斑。许多由供试化合物诱发的植保 Indian plant pathologist Sengupta TK conducted field trials of 20 compounds including sodium selenite and ferric chloride in the summer and winter of 1984 and 1985 in a randomized block design and found that 10 of these compounds provided practical protection Role, reduce the incidence of blast of 72 ~ 89%. The other seven kinds reduce the incidence of 60 ~ 68%. There is almost no spot on the plants. Many plant protection induced by test compounds