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番茄早疫病是房县番茄生产上的主要病害之一,特别是保护地呈现逐年加重危害的趋势。苗期、成株期均可染病,主要侵害叶、茎、花、果,后期果实开裂,病部较硬,密生黑色霉层,严重影响番茄产量和品质,常年发生面积533.4 hm~2次,目前生产中仍延续采用百菌清、多菌灵等农药进行防治,由于连年使用,导致防效降低。为探讨52.5%噁酮·霜脲氰水分散粒剂对番茄早疫病的防治效果,进行了田间试验。现将试验结果报告如下:
Early blight of tomato is one of the main diseases of tomato production in Fang County, especially the protection presents a trend of aggravating year by year. Seedling and adult stage can be infected, the main invasion of leaves, stems, flowers, fruit, later fruit cracking, disease hard, dense black mold layer, seriously affecting the yield and quality of tomatoes, perennial area of 533.4 hm ~ 2 times, The current production is still continued to use chlorothalonil, carbendazim and other pesticides for prevention and control, due to years of use, leading to reduced control efficiency. In order to investigate the control effect of 52.5% oxaliplatin and cream urea water dispersible granules on early blight of tomato, a field experiment was conducted. The test results are reported as follows: