不同保水处理对苹果生长的影响

Effects of Different Water Retention Treatments on Apple Growth

针对黄土高原旱作果园水源不足,灌溉条件差等问题,开展了覆草、覆园艺地布、施用保水剂与清耕对照试验,连续两年对土壤含水量、果树生长和结果等情况进行调查。结果表明:在保持土壤水分、提高百叶重和叶片叶绿素含量、促进新梢生长、提高果实品质和产量方面,覆草效果最好,其次为覆园艺地布和施用大粒长效钾型保水剂,粉末状钠型保水剂施用第一年有明显作用,第二年效果消失。

Focused on the problem of making full use of natural precipitation in arid orchards on loess plateau,this study conducted three trials, including grass covering, gardening cloth covering and applying water-retaining agents with cleaning tillage as check test, and has continuously investigated soil water content, tree growth and bearing of fruit for 2 years. The results showed that the effect of grass covering on keeping water,improving the content of leaf chlorophyll, promoting the shoot growth, and improving the quality and yield of fruit was the best, followed by the gardening cloth covering and the applying of large-grain and long-effect potassium-type water-retaining agent. The application of powdered sodium-type water retaining agent had obvious effect in the first year, and in the next year the effect disappeared because of decomposition.