盛果期红富士苹果适宜负载量的研究

Research on Suitable Fruit Load of Red Fuji Apple in Full Fruit Period

以18年生红富士苹果为试材,研究了不同负载量对树体生长、叶片质量、果实品质及产量的影响。结果表明:随着负载量的增大,单株枝量、单株叶面积、叶面积系数、叶片叶绿素含量及单果重均呈下降趋势,但负载量对枝条生长量、枝类组成及果实硬度无明显的影响;以处理T4的单位面积产量最高。综合认为盛果期红富士苹果较适宜的负载量水平为52.5～60.0 t/hm2。

The 18 - year - old red Fuji apple was used to study the influence of different fruit loads on the tree growth, leaf quali- ty, fruit quality and fruit yield. The results indicated that： along with the increase in fruit load, the number of branches per plant, leaf area per plant, leaf area coefficient, chlorophyll content in leaf, and weight per fruit all appeared a decreasing trend; while fruit load had no obvious influence on the branch growth rate, branch constitution and hardness of fruit. The treatment T4 obtained the highest fruit yield per unit area. It was concluded that the suitable fruit load of red Fuji apple in full fruit period was 52.5 - 60.0 t/hm^2.