摘要
对毛竹进行不同氮肥用量，施氮肥方法，氮、磷、钾配合肥的技术经济效果进行研究，结果表明，①不同氮肥用量的产值之间具极显著差异，每３３３ｍ２施用５、１０、１５、２０ｋｇ尿素，其增值幅度分别为３２．５５％、７８．２５９％、１０２．４６％和１３６．５６％，边际投入产出比分别为１：７．６、１：１．０８、１：５．６、１：８；②施氮肥的４个时间和４种方法的组合处理间无显著差异，生产上均可选用，③不同氮、磷、钾配合施肥后，第１度竹经济效果未表现明显差异，第２度竹达显著水平，氮、磷、钾配比为５：１：７、５：２：０、５：２：３的增值幅度分别为７．２９％、２４．４％、２８．０４％。在竹林经营中应施氮、磷肥为主，钾肥效果最差。
Study on economic benefit of difterent dose method and ratio of N.P.K applicated in Phyllostachys pubescens forest resulted that ①output value had evident significance with different N fertilizer dose,output value increased respectively by 32.55%.78.25%. 102.46%and 136.56% with application of urea by 5、10、15、20kg/333m2,marginal ratio of input and output was 1:7.6、1:1.08、1:5.6 and 1:8;② there had no evident difference among treatments with 4times and methods of Nifertilizer application;③ after fertilization with different ratio of N.P.K,no evident economic effect:on 2years bamboo,but evident on 4-years one.Output value increased respectively; by.7.29%.24.4% and 28.04 % with ratio of 5:1:7、5:2:0and 5: 2: 3.
出处
《竹子研究汇刊》
北大核心
1996年第1期21-29,共9页
Journal of Bamboo Research
关键词
毛竹
施肥
经济效益
施肥量
Phyllostachys pubescens forest
fertilizer application
economic benefit
