摘要
１９９１－１９９４年进行了赤霉清对油菜菌核病菌的离体毒力测定及田间试验示范．离体毒力测定结果表明，赤霉清对油菜茎、叶菌核病菌的ＥＣ５０为１３１．９８和１２７．４７ｐｐｍ，共毒系数分别为４７１．０８和２８７．８０，其毒力与保护作用显著高于多菌灵和防霉宝．应用２５％赤霉清可湿粉每亩７０克（ａ．ｉ．１７．５ｇ），在油菜开花始盛期或盛花期喷一至二次．其防病效果显著高于多菌灵（ａ．ｉ．５０ｇ／亩）和防霉宝（ａ．ｉ．４２ｇ／亩）。
in 1991-1994,detached toxicity determination and field plots and large scale trials of chimeiqing to Sclerotinia sclerotiorum were carried out. The results of detached stem and leaf toxicity determination showed that,the EC50 values of chimeiqing to sclerotinia sclerotiorum were 131.98ppm and 127. 47ppm, respectively. The cotoxicity coefficients were 471. 08 and 287. 80 respectively. The toxicity and protection effect were remarkably higher than that of ABC and MBC- Hcl. Sprayins 25% chimeiqing WP 70 g(a. i. 15. 7g) per mu in primary or full rape bloom .the effect of the disease control and yield increase was sisnificantly hisher than that of ABC(a. i. 50g) and MBC- Hcl(a. 42g) . moreover,owing to the lower cost and convenient usage,chimeiqing was perfect fungicide to control Sclerotinia sclerotiorum at present.
出处
《中国油料》
CSCD
北大核心
1995年第1期43-46,共4页
关键词
油菜
赤霉清
菌核病
防治
Chimeiqing
Synergism
Sclerotinia Sclerotiorum
