质谱法研究鸭梨最佳施肥期肥料N的平衡及其效应  

Mass Spectrometric Study on Nitrogen Balance and Effect of Fertilizer at Its Best Application Time for "Yali" Pear

作　　者：高占峰[1] 陈良[1] 张永强[1] 林余益 徐晓荣[1] 曾艳军[1] 

机构地区：[1]河北农科院理化所

出　　处：《分析测试通报》1992年第5期76-78,共3页

基　　金：河北省科委资助项目

摘　　要：本实验利用质谱法探讨鸭梨最佳施肥期肥料N的平衡及其效应。数据分析表明,秋施肥较春施和夏施有利于植株吸收更多的肥料N;促进树体间的协调生长;能够最有效地提高土壤的供肥能力对于肥料N的损失最少。从秋施、春施、夏施三个施肥期的综合效果看,梨树施肥应以秋施为主、春施为辅。The nitrogen balance and effect of fertilizer at its best application time for 'Yali' pearwere studied by the authors. The data of the study indicated that fertilizer application in autumnis favourable to the absorbtion of nitrogen by the trees, to coordination of the growth of thetrees, to minium the fertilizer lose and to promotion of the soil ability to supply fertilizer. The-refore, it is suggested that the best season for fertilizer. application is autumn.

关 键 词：质谱法 鸭梨 施肥期 氮肥 

分 类 号：S661.2[农业科学—果树学]