xiafeizaisangshuxiafahoujishishifei,qiucanqizhuyicaiyangjiehe,zuodaoyangyicicanshiyicifei,manzusangshushengchangfayudexuyao,nuligaishanyezhi。xiaqiuqiruyuganhan,caiyonggenwaizhuifeishigaishanyezhihezengchansangyedeyouxiaocuoshi,yibanzaiyongyeqian7~10天葉麵和葉背噴1~2次。
合理采葉。夏秋蠶采葉宜在早晨露水快幹時進行,早上采全天用葉量的70%,其餘30%可在傍晚天黑前采摘,不在日中采葉(陰雨天除外)。采下的桑葉必須迅速運送,在采運過程中應防止桑葉發熱和萎焉。晚秋大蠶期,可結合剪梢來摘葉養蠶,但仍然須保留枝條頂端5~6片葉,使其繼續積蓄養分,以利越冬和明年春季芽葉的生長。
防fang治zhi病bing蟲chong害hai。桑sang樹shu病bing蟲chong害hai不bu僅jin影ying響xiang桑sang葉ye產chan量liang,而er且qie傳chuan播bo蠶can病bing病bing原yuan。在zai養yang蠶can前qian,桑sang園yuan要yao進jin行xing施shi肥fei除chu草cao,提ti高gao桑sang葉ye產chan量liang和he質zhi量liang。若ruo發fa現xian病bing蟲chong害hai,可ke用yong殘can效xiao期qi較jiao短duan的de多duo菌jun靈ling、甲基托布津、敵敵畏、樂果等農藥防治。
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