巴彦淖尔市河套灌区毛渠农防林经济效益最佳采伐年龄的调查研究

Investigation on The Optimal Cutting Age for The Economic Benefits of Farmland Shelter Forest in Hetao Irrigation Area in Bayannaoer

为掌握内蒙古巴彦淖尔市河套灌区毛渠群众杨的胁地规律并与农作物比较经济效益，在毛渠上按龄阶设置样地，通过对不同龄阶树木的生长量和紧邻防护林的小麦产量调查，经回归分析法、显著性分析法、价格比较法等分析比较，表明河套灌区毛渠农防林经济效益最佳的采伐年龄为10～12年。

In order to master the soil coerced rules of Populus popularis and compare the economic benefits with the crop in Hetao irrigation area in Bayannaoer, the sample plots have been set in sublateral according to the age stage, the increment of trees at different age stages and the yield of the wheat adjacent to the shelter forest have been in- vestigated, the optimal cutting age for the economic benefits of farmland shelter forest in Hetao irrigation area is 10 to 12 years by use of the regression analysis, significance analysis and price comparison.