我县湖滩面积较大(17.6万亩),土壤肥沃,自然条件优越,常年以生长芦苇、柴草为主。随着水系的变化,水位下降,芦滩长期裸露,柴草退化,自然植被受到破坏,经济效益很低。从1979年开始改造滩地,累计开发18,690亩,营造商品基地林16,144亩,同时,进行林农、林鱼、林牧、林果、林经等综合对比试验,经济效益明显提高,林木生长迅速。由于林、农、牧、果、经济植物相互结合,改善了生态环境,增加了农民的收入,促进了种植、养殖业的发展。本文试就池杉林农复合系统经济效益方面探讨的结果,报告如下: 一、不同布局选择方法 (一)林农结合 在池杉幼林下,选择水稻、豆类、油菜、生姜、芋头、甘蔗、林苗等经济作物进行间作,林与水稻结合的, I County Lake larger area (176,000 acres), fertile soil, excellent natural conditions, perennial growth of reeds, firewood-based. With the change of water system, the water level will drop, the long-term exposure of Lutan, the degeneration of firewood, the destruction of natural vegetation and the low economic benefits. Since 1979, we have started to renovate beach land, accumulatively developing 18,690 mu and building 16,144 mu of commodity base forest. At the same time, comprehensive comparative experiments such as forest farmer, forest fish husbandry, forestry and animal husbandry, forestry and economic analysis have been made, with obvious economic benefits and rapid forest growth. As the forest, agriculture, animal husbandry, fruit, economic plants combined with each other, improving the ecological environment, increasing the income of farmers and promote the development of farming, aquaculture. This paper on the Ipomoea seedlings composite system of economic benefits of the results of the study are as follows: First, the different layout options (A) of foresters and farmers in the young fir, select rice, beans, rape, ginger, taro, sugar cane, forest Miao and other cash crops for intercropping, forest and rice combination,