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近年来我省许多地区发现桃果果顶坏死,个别果园重病田几乎绝收。因此,研究此病发生原因及寻找防治方法,已成为生产上迫切需要解决的问题。作者根据桃果果顶坏死的田间发生特点,对其发病部位进行分离培养和组织营养测定,初步认为该病为缺钙引起。叶面喷施钙及生长调节剂pp333,均能减轻病害发生。现将初步研究结果报道如下。
In recent years, many areas in our province found that the top peach fruit necrosis, individual orchard almost indiscipline disease. Therefore, to study the cause of the disease and to find ways to prevent it has become an urgent problem to be solved in production. According to the peach fruit top necrosis of the field occurred in the characteristics of the disease part of its isolation and culture and tissue nutrition determination, initially considered the disease caused by calcium deficiency. Foliar application of calcium and growth regulator pp333, can reduce the occurrence of diseases. The preliminary results are reported below.