旱原地区苹果叶营养水平研究

• 作 者: 邓熙时 史联让 安贵阳 袁景军 吕殿青 徐福利
• 机 构: 陕西省果树研究所!杨陵712100,陕西省果树研究所!杨陵712100,陕西省果树研究所!杨陵712100,陕西省果树研究所!杨陵712100,陕西省土肥研究所,陕西省土肥研究所
• 出 处: 果树科学
• 发表日期: 1995年03期
• 关键词: 苹果叶 营养水平 果树叶 果实硬度 产量效应 增加产量 苹果栽培 灌溉条件 肥料配方 果园土壤

通过叶营养普查和不同肥料配方对比,研究了黄土高原无灌溉条件下果树叶营养水平.查明了该区苹果树中普遍表现出P偏低K较缺乏、N适中Ca与Mg偏高的趋势;施肥能明显影响叶中N、P、K含量;施N、P能显著地增加产量,在试验条件下,施肥量增加,产量递增.施K能增加产量,但效果不如P、N明显,而且施量过多反而有降低产量趋势N与K对果实硬度影响明显P影响不明显;根据试验结果提出了N、P、K的产量效应方程.

Through leaf nutrient survey and comparison of different fertilizer formulas, the nutrient levels of fruit leaves under irrigated conditions in the Loess Plateau were studied, and it was found that there was a general trend of low P and low K and moderate N and moderate Ca and Mg in apple trees in this area ; Fertilization can significantly affect the content of N, P, K in leaves; N, P can significantly increase the yield, under the experimental conditions, the amount of fertilizer increased and the yield increased.Applying K could increase the yield, but the effect was not as obvious as P and N, However, excessive application of N and P could reduce the yield trend. However, the effect of N and K on the fruit firmness was not obvious. According to the experimental results, the yield-effect equations of N, P and K were proposed.