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通过在陕西关中和陕南不同生态区试验研究,结果表明,多菌灵、戊唑醇、速克灵均可作为防治油菜菌核病的有效药剂,但以速克灵效果最好,防效达到80%以上;其施药期为油菜初花-盛花期,施药次数以2次为宜,间隔7~10 d茎叶面喷施。进行药剂防治的同时,在油菜终花初期采取摘除主茎1~1.2 m以下“三叶”措施能进一步提高对菌核病的防病效果,尤其在陕南地区春季多雨、田间湿度大情况下防病效果明显,防病保产效果达到15%以上。采取“宽窄行”栽培与常规“等行距”栽培模式相比,对菌核病预防效果不明显,但丰产效果显著。推广栽培抗病品种,并结合药剂等关键防治技术对菌核病能起到更好的控制效果。
The results showed that carbendazim, tebuconazole, and scopolamine could be used as effective medicaments for the control of sclerotinia sclerotiorum in Guanzhong and Shaannan ecotopes in Shaanxi Province. However, Reaching more than 80%; its application period is the first flowering rapeseed - flowering stage, the number of applications to 2 times the appropriate intervals of 7 ~ 10 d stems and leaves spraying. In the meantime, the measures of preventing and curing Sclerotinia sclerotiorum could be further improved by removing the main stem 1 ~ 1.2 m below the initial stage of the final flowering of rapeseed, especially in the rainy season in spring in southern Shaanxi and the high humidity in the field In the case of disease prevention effect is obvious, disease prevention and protection effect of more than 15%. Compared with the conventional “spacing” cultivation mode, the prevention effect on Sclerotinia sclerotiorum was not obvious, but the yield was significant. Promote the cultivation of disease-resistant varieties, combined with pesticides and other key prevention and control techniques on sclerotisis can play a better control effect.