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疏花疏桑是在苹果进入盛果期后,针对花量过多所采用的一项措施,它对减轻树体营养负担,防止大小年,提高果品质量均起到重要作用。生产上除了采用人工疏果外,近几年来国内用化学药剂疏果的研究与应用日趋增多。但是一些药剂如西维因、萘乙酸对小国光苹果很难疏除。六十年代我们曾在生产中发现敌百虫在花后使用,除有治虫作用外,还有疏果的作用。1971—1980年我们开始应用<敌百虫>进行疏果试验和研究。现将结果总结如下:
Sushisu mulberry is a measure adopted by the apple after it reaches the full fruit stage, which is used for excessive blooming. It plays an important role in alleviating the nutritional burden of the tree, preventing the size of the year, and improving the quality of the fruit. In addition to the production of artificial fruit thinning in recent years, the domestic use of chemical agents thinning fruit research and application of increasing. However, some agents such as civenide and naphthalene acetic acid are not easy to thin out for small country light apples. Sixties we have found in the production of trichlorfon after anthesis use, in addition to the role of pest control, but also the role of fruit thinning. From 1971 to 1980, we started to use to conduct fruitless experiment and research. The results are summarized as follows: