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高温期间摘顶降枝,可促进病害的发生,这已被生产和试验证明。但摘顶又是我省桑树增产主要措施之一。如何兼顾产量与防病?从1980年开始,我们用带叶摘顶、留叶采横枝收获法,探讨对减轻桑青枯病发生的作用,取得了良好效果,现将3年来试验结果综合整理如下。 (一)材料与方法 1.供试桑树品种:“广东荆桑”、“塘_(10)×109”。 2.试验方法: (1)选择2年树龄病地,划分小区,区与区之间发病率要求大致相等。分带叶摘顶与普通摘顶(对照)处理。 (2)选择严重病地,挖除病桑,犁耙均匀
Pick the top down during high temperatures, can promote the occurrence of disease, which has been production and testing proved. However, the top pick is one of the main measures to increase yield of mulberry trees in our province. How to take into account the yield and disease prevention? From 1980 onwards, we use the leaves with the top, leaf harvesting Hengzhe harvesting method to explore the role of reducing the occurrence of fungal bacterial wilt, and achieved good results, now the results of three years of comprehensive test Finishing as follows. (A) Materials and Methods 1. For the mulberry varieties: “Guangdong Jing Sang”, “Tong _ (10) × 109”. 2. Test methods: (1) Select 2-year-old age, divide the district, district and district morbidity requirements roughly equal. Divide the leaves to pick the top and ordinary top (control) treatment. (2) choose a serious disease, dig the sick mulberry, rake evenly