保花保果与疏花疏果,是一九五八年以来我国果树界爭論的主要問題。尤其是一九六一年,在这方面有不少人发表了自己的意見。这对推进果树生产的发展以及提高学术理論水平,起了很大作用。在这場論战中,对我的启发很大。因此我也談談我的見解。一、自然落花落果是果树对不良环境条件的适应性,是保花保果提出的依据我們在果树生产实踐中,只看到开花多結果少,落花落果程度上有所差异的果树,而决不会看到开一花成一果的現象。可能会有人反駁:“那是管理工作跟不上去”。固然,果 Paul flower preservative and thinning thinning fruit, since 1958 the main problem argues the fruit tree community in our country. In 1961, in particular, many people in this respect have expressed their opinions. This has played a significant role in promoting the development of fruit tree production and raising the level of academic theory. In this debate, inspired me a lot. So I also talk about my opinion. First, the natural fall and fall fruit tree is bad adaptability to adverse environmental conditions, is the basis for the protection of flowers Paul fruit trees in the production of our practice, only to see less fruit flowering, fruit drop flowers vary fruit trees, and Will never see the flower blossom into a fruit. Some people may refute: “It is management can not keep up.” Of course, fruit