摘要
Abstract
The objective of the experiment was to study the effect of N level on yield and quality of Jinqiu pear and to provide the theoretical foundation for improving yield and quality of pear in the Guizhou province .A field experiment was laid out using Jinqiu pear as material with three fertili-zation levels ,N application rate of 0 .15 (deficient) ,0 .25(optimum) ,and 0 .35(excessive) kg per plant .The effect of N level on yield was very significant ,with pear yield increasing as N level in-creased .The correlation between N level and quality of pear affirmatively existed .Fruit hardness was reduced ,total sugar and Vitamin C concentration were improved with the increase of N level . However ,the effect of N level on the total acids was very marginal .The net income increased with N level increasing by analyzing economic benefit .We advocated the optimum N level as an optimal N fertilizer in the south-east of Guizhou province after considering synthetically the economic be-nefit and the potential risk of exceeding N application .关键词
氮肥用量/产量/品质/经济效益/金秋梨Key words
N level/yield/quality/economic benefit/Jinqiu pear分类
农业科技
