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陕西省果树研究所实验室合成的土壤保水剂在渭北旱塬果树生产上应用后 ,试验果园苹果树干周比对照增加 2 3 %以上 ,叶面积比对照增加 2 5%以上 ,单叶鲜重增加 3 1 %。新梢生长明显加快 ,比对照增加1 5%以上 ,春梢开始旺长 ,秋梢生长相对受到抑制。苹果树的落叶期第 1年度约推迟 1个月 ,第 2年度约推迟2 0 d左右 ,第 3年不明显。富士苹果树对土壤保水剂的作用比秦冠树敏感。综合作用结果是 ,试验果园苹果产量增加 2 0 %以上 ,苹果质量明显提高 ,果树生长健壮 ,各项特性良好。
After application of the soil water-retaining agent synthesized by the Laboratory of Shaanxi Fruit Research Institute in the production of fruit trees in Weibei highland, the apple orchard trunk circumference increased by 23% or more compared with the control and the leaf area increased by 25% or more compared with the control. Increase by 3 1%. Shoot growth significantly accelerated, an increase of more than 15% compared with the control, spring shoot began to grow long, autumn shoot growth was relatively inhibited. Apple tree in the first year of deciduous period about 1 month postponed, the second year postponed about 20 days, the third year is not obvious. The effect of Fuji apple tree on soil water-retaining agent is more sensitive than that of Qin Guan-shu. The combined result is that the output of apple in the test orchard increased by 20% or more, the quality of apples improved apparently, the fruit trees grew robustly, and all the characteristics were good.