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日本在柑桔疏果剂方面的研究已有30多年,比任何国家都先进。但广泛应用的仅仅是J—455。在植物生长调节剂中,它的销售量居第四位。该剂从开发到适用性试验曾经历了十余年时间,在生产上应用已有七年。但不同年份、不同地区、不同树上效果不一。据调查系环境因子和树体条件不同所致。为此将这方面的研究成果和使用技术介绍如下,以供参考。 一、影响J—455疏果效果的因子 (一)喷布时期的低温 J—455是具有生长素活性的化合物。喷了J—455的植株乙烯的发生量增加,加速离层的形成,促进落果。如遇连续高温,即使植株不喷J—455,乙烯发生也会增多而引起落果。J—455是在生理落果期促进乙烯发
Japan has spent more than 30 years studying citrus softeners and is superior to any other country. However, the widely used J-455 only. In plant growth regulators, it ranks fourth in sales. The agent from development to suitability test has experienced more than ten years, has been in production for seven years. However, different years, different regions, different trees have different effects. According to the investigation of environmental factors and tree conditions caused by different. To this end the research results and the use of technology introduced below, for reference. First, the factors that affect the thinning effect of J-455 (A) J-455 is a compound with auxin activity during the spraying period. Planting J-455 increased the occurrence of ethylene plants to speed up the formation of the formation of separation, and promote fruit drop. In case of continuous high temperature, even if the plant does not spray J-455, the occurrence of ethylene will increase and cause fruit drop. J-455 is the promotion of ethylene in the physiological deciduous period