Scheme of Nitrogen Reasonable Fertilization in Mulberry Gardens of Sichuan Hilly Areas  

四川丘陵地区桑园合理施氮方案的研究(英文)

作　　者：殷浩[1,2] 张建华 佟万红[1] 刘刚[1,4] 黄盖群[1] 危玲[1] 罗春燕[3] 王丽[5] 

机构地区：[1]四川省农业科学院蚕业研究所,四川南充637000 [2]四川省蚕业科技开发总公司,四川南充637000 [3]四川省农业科学院土壤肥料研究所,四川成都610066 [4]西南大学蚕学与系统生物学研究所,重庆400716 [5]四川省林业科学研究院,四川成都610066

出　　处：《Agricultural Science & Technology》2012年第9期1933-1936,共4页农业科学与技术（英文版）

基　　金：Supported by Special Fund of Modern Agricultural Industry Technology System(No.CARS-22);Special Fund of Major Industry Technology of Sichuan Economic and Trade Commission(No.2008NC00365);Excellent Paper Fund of Sichuan Academy of Agricultural Sciences(No.2011JYGC-LWJJ-07);Special Fund of Sichuan Financial Genetic Engineering(No.2011JYGC-QNJJ-021)~~

摘　　要：Abstract In the research, five test groups were set, including urea at O, 120, 240, 360 and 480 kg/hm^2, respectively, and analysis was conducted on mulberry leaf yield and some characters of the quality in order to establish utility functions of ap-plied N in mulberry gardens with different production purposes and to provide schemes of rational N fertilization. The results indicated that yield of mulberry leaf and content and yield of active nutritional substances in the leaves would be reduced either by insufficient or excessive N quantity. In addition, 240 kg/hm^2 of applied N significantly improved active nutritional substances in leaf and 360 kg/hm^2 of applied N significantly improved yields of mulberry leaf and active nutritional sub-stances. Therefore, utility functions of applied N quantity with leaf yield, DNJ content and yield were established accordingly. The optimal N quantity in mulberry gardens for sericulture is recommended 360 kg/hm^2 and the optimal N quantities in mulberry gardens for increase of yield and content of DNJ are 299.56 and 294.72 kg/hm^2, respectively.针对四川丘陵地区桑园偏施和过量施用氮肥的问题,设置0、120、240、360、480kg/hm2尿素共5个施氮量试验组,通过比较与分析不同试验组桑叶产量和部分品质性状成绩,建立不同生产目的桑园施氮效应函数,提供合理的施氮方案试验结果表明,少施或过量施氮都会降低桑叶产量及桑叶中营养活性物质的含量和桑叶营养活性物质的产量240kg/hm2的桑园施氮量能显著提高桑叶营养活性物质的含量;360kg/hm2的桑园施氮量能显著提高桑叶产量及桑叶营养活性物质的产量依据分别建立的桑园施氮量与桑叶产量桑叶中的1-脱氧野尻霉素(DNJ)含量桑叶DNJ产量的肥料效应函数,推荐以生产养蚕用叶为目的的桑园最佳施氮量为360kg/hm2,以提高桑叶DNJ含量和产量为目的的桑园最佳施氮量分别为299.56和294.72kg/hm2。

关 键 词：Mulberry tree N quantity Yield of mulberry leaf Nutritional active sub-stances 1-DEOXYNOJIRIMYCIN 

分 类 号：S888[农业科学—特种经济动物饲养]