摘要
In order to mitigate the occurrence and damage of cowpea anthracnose and reduce the chemical pesticide consumption, residue and environmental pollution, the methods of forecasting, randomized block design and statistical analysis were conducted to study the control effect of biopesticide chitosan, biochemical compound Prochloraz-Chitosan and chemical pesticides difenoconazole and thifluzamide by field efficacy trials. The results showed that under serious occurrence of anthracnose in autumn greenhouse cowpea, when the 2% chJtosan AS （2 250 g/hm^2）, 46% Prochloraz-Chitosan EW （450 g/hm^2）, 10% difenoconazole WG （900 g/hm^2, CK） or 24% thifluzamide SC （360 ml/hm^2） were applied three times with an interval of 5-8 d, the control efficiency on day 7, 14 and 20 reached 83%, 78% and 73%, respectively. No significant difference was found in control efficiency among the four kinds of agents. These four kinds of agents, especially chitosan and Prochloraz-Chitosan, could be used as ideal agents for controlling anthracnose, as well as for modern agricultural demonstration zones, pollution-free agricultural products, green agricultural products and organic agricultural products,thereby meeting the develop- ment needs of ＇modern agriculture, green agriculture, organic agriculture and ecological agriculture.
为减轻豇豆炭疽病发生危害，减少化学农药用量、残留和环境污染，采用测报调查、随机区组设计和统计分析等方法，开展了生物农药几丁聚糖、生化复配制剂咪鲜·几丁糖和化学农药苯醚甲环唑、噻呋酰胺防治豇豆炭疽病田间药效试验。结果表明：在温室大棚秋季豇豆炭疽病发生较重情况下，每公顷用2％几丁聚糖AS2250g、46％咪鲜·几丁糖EW450g、10％苯醚甲环唑WG900g（对照药剂）和24％噻呋酰胺SC360ml，5～8天施药1次，连续施用3次，药后7、14、20天，防治效果均在83％、78％和73％以上，且4种药剂防治效果差异不显著，该4种药剂尤其是几丁聚糖和咪鲜·几丁糖不仅可以作为防治炭疽病的理想药剂，而且可以作为现代农业示范区、无公害农产品、绿色农产品和有机农产品的理想药剂，确保现代农业、绿色农业、有机农业和生态农业发展需要．
基金
Supported by Circular of the Ministry of Agriculture on Approval of the First Batch of the National Demonstration Zones for Modern Agriculture(NJF[2010]22)
Fundamental Research Funds for the Central Universities(XDJK2015C057,SWU114046)~~
