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苹果和梨都是自花授粉结实率很低的果树。据调查,这些果树的正常花,常因没授上粉,子房不能发育而出现落花和落果,严重时脱落率可达50％以上。很多实践证明,进行人工辅助授粉,是一项有效的补救办法,能提高座果率10～30％。人工授粉,过去都采用固体花粉点授的方法,不仅速度慢,而且漏授很多。近年来采用液体花粉喷授新技术,喷布周到、速度快、能提高工效5～10倍。具体做法如下: 1.取粉时间和方法:当花朵露瓣初(气球期),进行摘花(疏花),经过日晒或在距灯泡(40—100瓦)一尺远处加温(25～30℃)干燥。待花药开裂,用细筛(60目)除去杂质筛
Apples and pears are fruit trees with very low self-pollinating rates. According to the survey, the normal flowers of these fruit trees often fail to flour, and the ovary fails to develop and the flowers fall and fall. In severe cases, the shedding rate can reach more than 50%. Many practices have proved that the artificial assisted pollination is an effective remedy that can increase the fruit set rate of 10 to 30%. Artificial pollination, the past have used the method of solid pollen point, not only slow, but also grant a lot of leakage. In recent years, the use of liquid pollen spray technology, good cloth, fast, can improve work efficiency 5 to 10 times. The specific practices are as follows: 1. Take the powder time and method: When the flower petals early (balloon period), pick the flowers (thin flowers), after the sun or in the bulb (40-100 watts) one foot away from the heat (25 ~ 30 ° C). Anther dehiscence, with fine sieve (60 mesh) to remove impurities sieve