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1973年我们发现,在生理落果期间喷布2000 ppm的青鲜素,可使栟柑及锦橙的种子退化成芝麻大小,口尝几乎与无籽柑桔相似。青鲜素又称马来酰肼和MH。本试验用北京农药二厂出品,为含25%的水剂。1974年我们用锦橙幼树作试材,试验了不同时期喷布青鲜素的效果,计有五月中(5月15日、22日喷布)六月初(5月30日、6月1日)、六月中(6月15日、17日)、七月初(7月1日、3日)以及对照等五种处理。四月末至五月末为第一次生理落果期,末期果大
In 1973, we found that the injection of 2000 ppm of greens during physiological decolonization resulted in the degeneration of citrus and broccoli seeds to the size of sesame seeds, with taste similar to that of seedless oranges. Fresh green, also known as maleic hydrazide and MH. This experiment produced with Beijing Pesticide Factory, containing 25% of the liquid agent. In 1974, we used the young tree of Jincheng as a test material to test the effect of spraying the fresh greens in different periods, including the beginning of May (May 15th and May 22nd) and early June (May 30 and June 1 day), mid-June (June 15 and 17), early July (July 1 and 3), and comparison. The end of April to the end of May for the first physiological drop period, the end of a large fruit