不同氮肥用量对金秋梨产量及品质的影响  

Effect of N application rate on yield and quality of jinqiu pear

作　　者：张兴国[1] 

机构地区：[1]黔东南民族职业技术学院,贵州凯里556000

出　　处：《广东农业科学》2013年第5期65-67,共3页Guangdong Agricultural Sciences

摘　　要：不同氮肥用量对金秋梨产量及品质的影响试验结果表明,金秋梨的产量与氮肥间有一定的正相关关系,氮肥用量越大,金秋梨的产量越大。随着氮肥用量增加,金秋梨硬度不断降低,总糖含量和Vc含量逐渐增加,但对总酸含量影响较小。通过对经济效益进行分析,发现氮肥投入量越大,净收入越多。综合考虑经济效益和氮肥可能对环境带来严重的危害,推荐中氮施肥处理作为贵州黔东南地区的推荐施肥量。The effect of N application rate on yield and quality of jinqiu pear was studied. The result showed that the effect of N application rate on yield was very significant, and the yield of pear increased with N application rate increasing. The correlation between N application rate and quality of pear was affirmatively existed. Hardness reduced, total sugar and Vitamin C concentration improved with N application rate increasing. However, the effect of N application rate on total acids was very marginal. The net income increased with N application rate increasing by analyzing economic benefit. We advocated optimum N application rate as optimal N fertilizer in the south- east of Guizhou province after considering synthetically the economic benefit 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 

分 类 号：S143.1[农业科学—肥料学] S661.2[农业科学—农业基础科学]