在西昌市袁家山比较了经济林木落叶松、桉树和石榴对紫茎泽兰的替代作用,并研究了不同栽培模式对石榴产量和产值的影响.结果表明:落叶松和桉树对紫茎泽兰的发生密度和鲜重有显著的抑制效果,但对紫茎泽兰株高的抑制作用不显著;与空旷露地相比,石榴林中紫茎泽兰的株高降低了70.42％,发生密度降低了96.15％,鲜重减少了99.67％,且紫茎泽兰中养分含量最低;采用冬季翻耕、化学除草杀虫、施用农家肥、林下养鸡,并结合整枝、抹芽和套袋等栽培措施后,石榴林间的透光率高,石榴的单果重、商品果数、产量和产值高.%In Yuanjiashan of Xichang city, the replacement and control of Eupatorium adenophorum by economic forest trees Larix gmelinii, Eucalyptus robusta and pomegranate ( Punica granatum) were compared, and the effects of different cultivation patterns on the yield and output value of pomegranate were studied. The results showed that L. gmelinii and E. robusta had signifi-cant inhibitory effects on the population density and fresh weight of E. adenophorum, but they had no significant inhibitory effect on the plant height of this invasive weed. Planting pomegranate had significant inhibitory effects on E. adenophorum, the plant height, population density and fresh weight of this weed in pomegranate forest were decreased by 70.42％, 96.15％ and 99.67％respectively in comparison with those in the open field, and the nutrient content in E. adenophorum in pomegranate forest was the lowest. After adopting some comprehensive cultivation measures such as winter ploughing, using farmyard manure, herbicides and insecticides, raising chickens in pomegranate forest, pruning, bud picking, and bagging, the light transmittance of pomegranate forest was increased, and the single-fruit weight, merchandise fruit number, yield and output value of pomegranate were higher.
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