矿物油夏季喷施对沃柑日灼病的影响

The Effects of Summer Sprays of Mineral Oils on Sunburn on Wogan Mandarin

2019-2020年7~9月进行了矿物油夏季喷施对沃柑日灼病的影响试验。结果表明:97%矿物油乳油(商标名:希翠)150倍液、300倍液,97%矿物源农用增效助剂(商标名:百农乐^(■))150倍液、300倍液,97%矿物源农用增效助剂(商标名:百农乐^(■))300倍液+53.8%氢氧化铜水分散粒剂(商标名:志信2000^(■))1000倍液+25%呋虫胺油悬浮剂(商标名:显明^(■)) 2000倍液+10%微量元素水溶肥(商标名:绿芬威微元宝^(■))的日灼果率及日灼指数与清水对照差异均不显著,即沃柑日灼病发生的轻重与夏季施用矿物油没有关系,对沃柑叶片及嫩梢生长也没有影响;沃柑夏季喷施园艺级矿物油(HMO)是安全的。

The impacts of summer spray applications of mineral spray oils on sunburn of Wogan mandarin,were conducted under field condition from Jul.to Sep,2019 and 2020,respectively.The results demonstrated that there were no significant differences on the sunburn rate and sunburn index between unsprayed control and spray treatments of each 0.67%and 0.50%of 2 oils,97%Mineral Oil(Trademark:Citrole)and 97%adjuvant mineral oil(Trademark:Banole EC)alone and with 0.01%copper hydroxides 53.8%WP(Trademark:Zhixin 2000)+0.005%Dinotefuran 25%OF(Trademarked:Xianming)+foliage spray fertilizer(Yara Vita,10%water soluble),suggesting that the occurrence and severity of the sunburn on the citrus fruits were not related to spray application of the mineral oils,and that the sprays had no effect on the leaves and growth flushes of citrus that imply the sprays in summer of the horticultural mineral oils possess no potential phytotoxic effects on the citrus.