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试验采用土壤施用适量PP333的方法，提高了宁夏圆葡萄的芽眼萌动率、植株结实系数及坐果率，为增产奠定了基础。同时，PP333能减缓新梢生长，减少夏季修剪用工，还能提高浆果贮藏性，烂果率较对照降低10个百分点以上。
In the experiment, soil application of proper amount of PP333 improved the bud germination rate, plant solid coefficient and fruit setting rate of Ningxia round grape, which laid the foundation for the increase of yield. At the same time, PP333 can slow the growth of new shoots, reduce summer pruning workers, but also improve the storage of berry. The rate of rotting fruits is reduced by 10% or more compared with the control.