摘要
为探讨毛竹林的施肥效果和合理的施肥配方,在浙江省安吉县、福建省沙县和长汀县三处设置了毛竹施肥试验林。六年的试验结果表明,立竹结构较合理的毛竹密林(立竹数3 000株/hm^2左右),施用三要素化肥肥效显著,年均增产鲜竹材2.67～5.70 t/hm^2,鲜笋0.34～0.75t/hm^2,每公斤肥料(按有效成分N、P、K计算)累计增产鲜竹材27.8～62.5 kg、鲜笋2.75～9.15 kg;最佳施肥配方为每公顷N310 kg,P 83kg,K 118kg。毛竹疏林(立竹数<1500株/hm^2)施肥效果较差。施氮水平相同比较,疏林的鲜竹材年均增产量只及密林的50％,经济效益只及60％。毛竹疏林的最佳施肥配方为每公顷N138 kg,P37kg,K79kg。本文还讨论了有机肥的增产效果,施肥对材性的影响以及肥效持续年限问题。
In order to find out the responses of fertilization on the bamboo plantations and the rational rates of N, P, K fertilizer applied, three experiments of fertilization were conducted in Anji County of Zhejiang Province, Shaxian County and Changtin County of Fujiang Province. Trials lasted for 6 years. Final results showed that the responses of fertilization on rational density of bamboo stands (about 3 000 standing plants per ha) were more significant than that of sparse bamboo stands (<1500 standing plants per ha). Fertilizing treatments in rational density stands yielded 2.67~5.70t/ha of fresh culms and 0.34~0.75 t/ha.a of fresh bamboo shoots more than that of the check from 1985~1990. Each kg of available N, P,K produced 27.8~62.5kg of fresh culms and 2.75~9.15 kg of fresh shoots. The optimum rate of application on dense bamboo stand for producing both timber and shoot was N310, P83, K118kg per ha.For the sparse bamboo stands,yearly increment of bamboo culms reduced 50%, compared with the dense stands in equal level of N application. The optimum rate of application was N138, P37, K79 kg per ha. This paper also discussed the response of organic manure, the effects of fertilization on the properties of bamboo timber as well as the long-term effect of fertilization.
出处
《林业科学研究》
CSCD
北大核心
1992年第4期371-378,共8页
Forest Research
关键词
毛竹林
施肥
配方
肥效
材性
bamboo forest rate of fertilizer applieation response of fertilization property of timber balance of nutrient
