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苹果树进入结果期后,很易出现大小年结果现象,使果实品质变差,而且极易导致果树腐烂病大发生,常常使不足30年生的果园被毁。因此,确定适宜的花果留量,克服果树的大小年结果,是果树工作者多年研究的课题。1987年初,笔者根据中国果树所提出的苹果留果公式 y=0.025C~2试制了苹果留果围尺,给苹果树测产、定产以及按产施肥带来极大方便,为克服苹果树大小年结果,实现高产、稳产、优质提供了较好的园艺工具,深受我县各果园的欢迎。现将围尺的制做方法及使用情况介绍如下,供各地试制和推广应用。一、围尺的制做将长120.7厘米、宽2厘米的牛皮纸条划分成如下11段:0～24.5厘米、24.5～30.5厘米、30.5～35.0
After entering the fruiting stage of the apple tree, it is easy to have the phenomenon of the annual result of size and year, which will deteriorate the quality of the fruit and easily lead to the decay of the fruit tree, and often destroy the orchard of less than 30 years. Therefore, to determine the appropriate amount of fruits and leaves to overcome the size of the annual results of fruit trees, fruit workers is the subject of many years of research. Early 1987, the author based on the Chinese fruit trees proposed apple fruit retention formula y = 0.025C ~ 2 trial of apple remaining fruit Wai Rui, to the apple tree test production, production and fertilization by the great convenience to overcome the apple tree The size of the year results, to achieve high yield, stable yield, good quality provides a good garden tools, by the county’s orchards welcome. Wai Wai now make the method and the use of the situation are introduced below, for trial production and promotion. First, the circumference of the rule of the system will be 120.7 cm long, 2 cm wide kraft paper is divided into the following paragraph 11: 0 ~ 24.5 cm, 24.5 ~ 30.5 cm, 30.5 ~ 35.0