苹果施用稀土的增产机理、效应和技术

The Effect Technigues of Applying Rare Earth Element and the Machanism of Increasing Yield to Apple Trees

稀土施于苹果,促进了根系对氮、磷、钾的吸收,叶面积增大,光合效率、光合强度增加,座果率提高,增产10％～15％。同时提高了果实品质:可溶性固形物、V_c及花青甙含量增加,提高了苹果的商品率和耐储性。同时阐述了稀土的施用技术。

Spraying rare earth element on apple trees could stimulat the root absorbability of nitro- gen, phosphrus and potassium. The leaf area was expanded and its photosynthesis was en- hanced. Fruit setting rate grew obviously and yield was increased by 10%～15%. The effect on improving fruit guality was also observed, such as adding in contewts of soluble solids、Vc and anthacyanidin, raising fruit commedity rate and exlending fruit storage life.