THE STUDIES ON THE PRINCIPLES OF STRESS RESISTANCE TECHNIQUES OF WINTER WHEAT CULTIVATION II. The Effect of Heavy Application of N-fertilizer in the Different Growth Stages on the Growth and Stress Resistance of winter wheat
A study of the effect of excessive nitrogen application during different growing stages on the growth and stress resistance of winter wheat was conducted from 1984 to 1985. The results are as follow:1. Excessive application of N fertilizer during the early growing stage of winter wheat is the main cause for large field population, long basal interno-des, low heading percentage, small size of ears and grains, low 1000-grain weight and retardation of growth.Therefore, the early growing stage is the critical p...