阜新北部沙地宽冠型杨树林下间种紫花苜蓿模式初探

Primary Study on the Model of Grass-planting under Poplar Forest with Wide Crest in the Sandy Land of North Fuxin City

林草间作可以科学合理的利用空间,改善区域气候,增强土壤肥力,促进树木生长,增加农民收入,为畜牧业发展提供原料,促进林业、草业、牧业的协调发展,从而取得较好的生态、经济和社会效益。作者通过对比试验,对杨树林下不同间种模式效益进行综合分析,得出阜新北部沙地宽冠型杨树林株行距为4m×6m时,林下种植紫花苜蓿能获得最好的生态效益和较好经济效益。

Forest and grass intercropping can make sufficient use of space, improve regional climate, increase soil fertility, frest growth and income of peasant, provide the material for the development of animal husbandry and advance the harmortious development of forest, grassland and animal husbandry, thus also obtain great ecological, economic and social benefits. With contrast experiment adopted, synthetical benefits were analyzed within the different intercropping models. The results showed that optimized individual and rowing space is 4 m×6 m for planting alfalfa under poplar forest with wide crest in the sandy land of north Fuxin city, which can obtain better economic benefit and best ecological benefit.