
滨海稻区稻瘟病发生动态及田间药效评价
Occurrence Dynamics of Rice Blast in Coastal Rice region and Evaluation of its Field Efficacy
车喜庆,桑海旭*,王井士,马晓慧,荆华,洪晓松 . 滨海稻区稻瘟病发生动态及田间药效评价[J]. 中国稻米, 2019 , 25(2) : 103 -105 . DOI: 10.3969/j.issn.1006-8082.2019.02.027
In order to determine the occurrence regularity of rice blast and screen out new high efficiency and low toxicity fungicides, a field trial was conducted with the three main varieties induced by highly susceptible variety. The results showed that there was significant difference in the disease index of 3 tested varieties, in which Yanfeng 47 had the highest disease index(up to 50.88), and Yangeng 16 had the lowest disease index (6.14); August 5th to 15th was the critical period for the occurrence of rice blast; Pyraclostrobin EC had the best control effect on rice blast and increase grain yield, Oxime bacteria Tebuconazole WG was followed.
Key words: rice; rice blast; occurrence dynamics; field control effect
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