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通过二年的田间试验和室内化学分析,对高秆、中秆、矮秆型春小麦的营养特性进行了研究.本文主要阐明:不同春小麦品种体内N、P、K浓度消长规律的共性与差异;三要素消耗系数,生产效率的置信范围和品种间的差异;不同品种三要素吸收曲线的共性和特殊性;穗部三要素的来源等.为耐肥性不同的春小麦品种的施肥技术提供理论依据
The nutrient characteristics of high-stalk, middle-stalk and short stalk type of spring wheat were studied through two years of field experiment and indoor chemical analysis.This paper mainly clarified the commonness and difference of the changes of N, P and K concentrations in different spring wheat varieties, The coefficient of three factors’ consumption, the confidence range of production efficiency and the difference between cultivars, the generality and particularity of the absorption curves of three elements of different cultivars, the source of three elements of panicle, etc. It provides a theoretical basis for fertilization techniques of spring wheat varieties with different fertility tolerance