论文部分内容阅读
绿叶是生产营养物质的工厂,是果树开花结实的基础。生长季节如果没有绿叶,果树就会因断绝营养而死亡。早期落叶既影响当年产量,减少积累,削弱树势;也影响花芽分化,使下一年产量下降,引起腐烂病大发生。为此,生长季节的果树管理,最主要的任务就是保护绿叶。首先,要加强对危害叶片的病虫害的防治。同时,避免出现药害。比如,防病常规农药波尔多液,由于近来只注意购用优质高价硫酸铜,而忽视了廉价的石灰的质量。
Greenery is a plant that produces nutrients and is the basis for fruit trees to bloom. If there is no green leaves during the growing season, the fruit trees will die of nutrition. Early deciduous not only affect the current yield, reduce accumulation, weaken the tree vigor; also affect the flower bud differentiation, so that the next annual output decline, causing a large rot disease. To this end, the growing season of fruit tree management, the most important task is to protect the green leaves. First of all, we should step up prevention and control of pests and diseases that endanger leaves. At the same time, to avoid injury. For example, conventional pesticide Bordeaux mixture, due to the recent purchase of only high-quality high-priced copper sulfate, while ignoring the quality of cheap lime.