问:我一盆六月雪开春以来,树叶一发出就变黑、卷曲,枝梢渐渐干枯,何法可治? 甘肃陈炳答:开春后六月雪嫩枝卷曲、枯萎,是蚜虫、红蜘蛛、介壳虫为害所致。春暖及秋季,是蚜虫为害严重的季节,若虫群集叶片及嫩梢吸食汁液,被害叶片向背面不规则卷缩,严重时嫩枝梢枯萎死亡。防治蚜虫、红蜘蛛要及早用40％氧化乐果1200～1500倍液、50％马拉硫磷1000倍液或80％敌敌 Q: I am a basin of June snow since the spring, the leaves of a black hair on the issue, curly, dry branches gradually, what can cure? Gansu Chen Bing A: June spring after the snow curly twigs, withered, is aphids, red Spiders, scale insects caused by. In spring and autumn, it is a season in which aphids are severely damaged. In the nymphs and young shoots, juice is consumed by the leaves and young shoots. Control aphids, red spider should be as early as 40% omethoate 1200 ~ 1500 times, 50% malathion 1000 times solution or 80% enemy