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柑桔春梢是当年的结果枝,夏梢和秋梢是来年的结果母枝,苗木则不论何期抽生的新梢都是壮大苗木、构成骨架的物质基础,因此有关严重为害各次新梢的害虫,都需要及时掌握防治时期,主要有下列数种:1.恶性叶虫:恶性叶虫主要以幼虫在叶背食害嫩叶,并因虫体背面分泌粘液和堆积粪便,沾污嫩叶,易使嫩叶变黑脱落。各柑桔区因气候不同,一年
Citrus spring shoots are the result of the year branches, summer shoots and autumn shoots are the result of the coming year mother branches, seedlings no matter what period of the shoots are new shoots grow seedlings, constitute the material basis of the skeleton, so the serious damage each new Pests, need to grasp the prevention and treatment period, there are several kinds of the following: 1. Malignant leafworm: Malignant leafworm mainly in the leaves of the larvae eat young leaves, and the secretion of mucus on the back of the body and accumulation of manure, contaminated tender Leaves, easy to blacken the leaves off. Citrus District, due to different climates, a year