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为掌握桃小食心虫在枣园内的发生规律及防治最佳期 ,采用桃小性诱剂为测报工具 ,对其进行研究。结果表明 ,桃小食心虫成虫每年有 2~ 3次发生高峰 ,分别为 6月上中旬、 7月上中旬和 8月上中旬。同时 ,发现桃小成虫发生与气象因子有密切关系 :温度在 2 4℃时桃小羽化最为适宜 ,小于 18℃或大于 30℃时 ,难以羽化 ;羽化期适量降雨有利于羽化 ,干旱、大风、大雨不利于羽化。因此 ,6月底以地面防治为主、 7月上中旬以树上防治为主的防治方法 ,效果最好。
In order to grasp the occurrence and control of peach mungbean in the jujube garden, the peach small lure was used as the measuring tool and studied. The results showed that the peach moth adult peaked 2-3 times a year, respectively, in the middle of June, middle of July and middle of August. At the same time, the occurrence of peach juveniles was closely related to the meteorological factors. When the temperature was 2 4 ℃, peach eclosion was the most suitable, less than 18 ℃ or more than 30 ℃, it was difficult to eclosion; moderate rainfall during the eclosion period was favorable to eclosion, drought, gale, Heavy rain is not conducive to emergence. Therefore, by the end of June, ground-based prevention and control should be given priority to prevention and treatment based on tree control in mid-July.