摘要
研究了郁闭后杨树林下间作麦冬、百合和生姜对林木生长、土壤肥力的影响及经济效益。结果表明:郁闭后杨树林下间作麦冬和百合对林木生长均有一定的促进作用。间作麦冬、百合第1年,杨树胸径连年生长量均比对照提高15.8%,树高连年生长量分别比对照提高31.6%和26.3%;间作麦冬第3年,杨树胸径和树高连年生长量分别比对照提高33.3%、13.3%。间作麦冬0～40 cm土层土壤有机质及N、P、K主要养分含量均比间作前有所下降。研究出郁闭后的杨树林下最适宜间作麦冬,年均利润高达12 776元/hm2,并且一个轮伐期至少增加木材收益5 800元/hm2。
Interplanting Liriope spicata, Lilium brownie and Zingiber officinale Roscoe in canopy poplar woodland to research the influ- ence on tree growth and soil fertility, and to research the economic benefit. The results showed that, the DBH current annual growth of forest stand were increased by 15.8% with interplanting Liriope spicata and Lilium brownie than control group after a year, the height current annual growth of forest stand were increased by 31.6% and 26.3% with interplanting Liriope spicata and Lilium brownie than control forest stand after a year. The current annual growth of DBH and height were increased by 33.3% and 13.3% respectively with interplanting Liriope spicata than control group after three years. The nutrient of soil for N, P, K and organic matter were decreased af- ter interplanting Liriope spicata. It was suited to interplant Liriope spicata in canopy poplar woodland, the annual profit was as high as 12 776 yuan/hm^2, and the profit of wood increased 5 800 yuart/hm^2 for one rotation age.
出处
《湖南林业科技》
2013年第3期43-47,共5页
Hunan Forestry Science & Technology
基金
"十二五"农村领域国家科技计划课题(2011 BAD38B07)
关键词
杨树
郁闭
间作
效益分析
poplar
canopy
interplant
benefit analysis
