间种对油茶幼林生长的影响及效益分析

摘要

Effects of different intercropping commercial crops,including soybean,peanut,sweet potato and tobacco,has been primarily studied through a survey of field investigation and laboratory analysis in terms of growth and benefits of young Camellia oleifera forest.The results indicated that intercropping could all effectively accelerate growth of C.oleifera forest,in which intercropping soybean has the best effect than other three patterns,tree height has increased 0.11 m, ground diameter increased 0.04 cm,crown width increased 0.21 m2 and flower buds increased 20 per stick respectively. Intercropping at young C.oleifera forest is a suitable forest management model which can effectively increase economic benefits.The profits of tobacco was highest,and the yield was 48 960 yuan/hm2.In general,the peanut and soybean with short individual and nitrogen fixation ability should be selected for intercropping at young C.oleifera forest.%选用黄豆、花生、红薯和烟叶4种农作物于油茶幼林内进行间作，研究不同间种模式对油茶幼树树体生长的影响，并对间种不同经济作物的油茶幼林林地经济效益进行分析。结果表明：间种可促进油茶幼林的生长，其中间种黄豆效果最好，树高增加了0．11 m，地径增加了0．04 cm，冠幅增加了0．21 m2，花芽数增加了20个／枝。间种可增加油茶幼林的经济效益，其中间种烟叶效益最高，经济产出为48960元／hm2。综合来看，油茶幼林间种的经济作物宜选择较矮小、具根瘤固氮菌的花生、黄豆。