【作者】 袁怀波；

【导师】 李雄；

【作者基本信息】 内蒙古农业大学 ， 果树学， 2001， 硕士

【摘要】 本文对河套地区苹果梨生产基地的叶片与土壤营养进行三年连续性研究。结果表明好、中、差果园土壤的N、P、K、有机质含量和叶片营养元素(Ca元素除外)均表现为好果园高于中等果园，中等果园高于差果园。好、中、差果园叶片营养元素中，K元素是最小元素，K元素对树体的营养水平以及产量、质量影响很大。叶片Ca元素表现为差果园高于中等果园，中等果园高于好果园，并且叶片Ca元素与其它元素呈负相关关系。 本实验的施肥试验表明，合理的土壤施肥可以提高土壤营养和叶片营养水平。盛果期苹果梨单株适宜施肥量为有机肥10-20Kg，果树专用复合肥500g，花后一次性混合施入。更多还原

【Abstract】 This paper was on the basic of three year’s continuous studying Ping Guo Li orchard in HE TAO area; The soil and the leaves, sampled from which, was systematically studied. The result showed that not only N-. P. K, the content of organic matter contain in soil but also leaves nutritional elements (except for Ca) in these three levels(high middle .~ low level).orchards were always in accordance with the regular pattern that in high orchards was higher than in middle orchards, and in middle orchards was higher than in low level one~. The study showed that K was the smallest element among leaves nutrient in the three levels orchards, it exerted a great influence on nutrition yield and quality of a tree. On the contrary, only Ca element of leaves was higher in low level orchards than in middle ones and in the middle orchards was higher than in the high ones. What抯 more, it had negative correlation with other elements in leaves. Rational soil fertilization could improve soil nutrition and leaves nutritious level. The test results suggested that the suitable fertilizer rate of a fruit period Ping Guo Li single-tree was after blossom fertilizer the mixed rate of 10-20Kg organic manure and 500g fruit tree complex fertilizer.更多还原