冬季是消灭和防治果树病虫害的最好时机,能收到事半功倍效果,方法如下:一、树干涂白。给树干涂白,用生石灰20斤、石硫合剂4斤、食盐2～4斤,粘土4斤,水70～80斤搅拌配制成涂白剂,最好加点杀虫剂和粘土。方法是用水化开石灰,过滤掉碴头,倒进已化开的食盐水,下拌上石硫合剂和粘土。涂上树干时以不流淌、干后不翘起、不脱落为适宜。这样,有利于防治日灼病,并兼治树干病虫害。 Winter is the best time to eliminate and prevent fruit pests and diseases, can receive a multiplier effect, as follows: First, the trunk painted white. To the trunk painted white, with lime 20 kg, 4 kg of lime sulfur, salt 2 to 4 pounds, 4 pounds of clay, water 70 ~ 80 pounds mixing formulated whitening agent, it is best to add pesticides and clay. The method is to use hydrated lime, filtered ballast head, poured into the salt water has been boiled, under the lime and sulfur mixture on the clay. Do not flow when coated with the trunk, do not tilt dry, do not fall off as appropriate. In this way, it is conducive to the prevention and treatment of sunburn and tree disease pests and diseases.