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1985年9月下旬,我省华容县一桔农为防治柑桔锈壁虱,对其部分温州蜜柑树喷了一次波美0.5度的石硫合剂(前几次喷的是水胺硫磷、氧化乐果等),结果观察到不仅有效地防治了柑桔锈壁虱,而且还促进了柑桔果实的着色。果实的着色要比未喷石硫合剂的约早5天,并且果实光滑,着色好。1986年9月底和10月上旬相隔10天,又喷射了2次波美0.5度的石硫合剂,结果明显表现有利于果实的着色。
In late September 1985, an orange farmer in Huarong County, Hunan Province, sprayed a lime-sulfur mixture of 0.5 degree of Baume (a few times ago for spraying citrate, Omethoate, etc.), the results observed not only effective control citrus rust ticks, but also promote the citrus fruit coloring. The color of the fruit is about 5 days earlier than that of the non-gypsum-sulfur mixture, and the fruit is smooth and well colored. At the end of September 1986 and the first ten days of October 1986, lime sulfur was sprayed twice again at 0.5 degree for Boeing for 10 days. As a result, it was obviously beneficial to the coloring of fruits.