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油葵常见病虫害

小九
2017-09-26
#油葵 也叫#向日葵 是我国主要生产油料作物种类之一,拥有很高的经济效益,但是在油料作物油葵种植过程中也是时长有病虫害发生,需要加强对油葵常见病虫害管理工作。

(1)农药的使用要严格遵守农药安全使用安全间隔期。

(2)地下害虫

苗期主要防治地老虎。每亩用50%辛硫磷乳油500 ml加水1~2千克,掺入40~50公斤细沙土,于傍晚撒在幼苗旁。

(3)病害

一是菌核病。若花盘期降雨偏多,用12.5%烯唑醇可湿性粉剂600倍液,或50%多菌灵可湿性粉剂500~800倍液,50%咪鲜胺锰盐可湿性粉剂1000倍液,或40%菌核净可湿性粉剂800~1000倍液喷雾,每隔7~10天喷1次,连喷2次。

二是褐斑病。发病初期打掉底部病叶,带出田间烧毁处理。喷施80%A式多菌灵可湿性粉剂800倍、或85%三氯异氰脲酸可溶性粉剂1500倍液、10%世高水分散粒剂1500倍液,轮换用药,7~10天一次,连喷2~3次。

三是黑斑病。发病初期及时喷洒70%代森锰锌可湿性粉剂400~600倍液或75%百菌清可湿性粉剂800倍液、50%异菌脲可湿性粉剂1000倍液,隔7~10天一次,喷施2~3次。

10.
当植株茎秆变黄,叶片大部分枯黄、下垂或脱落,花盘背面变成黄褐色,舌状花瓣干枯脱落,果皮变坚硬时收获。收获后要及时摊开,将花盘晾晒3~5天后脱粒晒干,防止霉变。
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