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一、前言EF——Ⅱ是广东雷州林业局从桉树中提取的一种活性物质。据资料介绍,该物质具有增强植物光合作用,促进新陈代谢,增加物质积累,提高产量及质量的作用。1988年5月至10月份区农垦局科技处委托我场进行了为期5个多月的 EF—Ⅲ胶试验。试验进行了4个周期(每月涂药一次为一周期,共涂四次药剂),整个试验分为
I. Introduction EF - Ⅱ is an active substance extracted from eucalyptus tree by Leizhou Forestry Bureau of Guangdong Province. According to the information, this material has the function of enhancing plant photosynthesis, promoting metabolism, increasing material accumulation and increasing yield and quality. May 1988 to October District Bureau of Reclamation Technology commissioned me to conduct a field of more than five months of EF-Ⅲ plastic test. The test was carried out for 4 cycles (once a month for a period of coating, co-coated with four doses), the test is divided into