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7~9月份是柑橘类果树的果实膨大期,这个时期一方面果实膨大需要大量的养分,另一方面,夏、秋梢生长也需要营养,因此,营养生长和生殖生长养分竞争十分激烈。而且,这个时段又正值南方的高温干旱期,会导致树体内促进生长类激素水平的降低和光合作用下降,不利于果实膨大,因此,加强这一时期的管理,是夺取柑橘生产优质高产的重要环节,为此,必须抓好以下几项关键技术。
July to September is the fruit of citrus fruit swollen period, this period on the one hand, fruit enlargement requires a lot of nutrients, on the other hand, summer and autumn shoot growth also needs nutrition, nutrition and reproductive growth of nutrient competition is very fierce. Moreover, this period coincides with the hot and dry periods in the south, which will lead to the reduction of growth hormone and photosynthesis in the tree body, which is unfavorable to the fruit enlargement. Therefore, strengthening the management of this period is to seize the high quality and high yield of citrus production An important part, for which, we must grasp the following key technologies.