民勤绿洲枣树、杨树防护林经济效益对比分析  

COMPARISON AND ANALYSIS OF ECONOMIC BENEFITS UNDER SHELTERBELTS OF CHINESE JUJUB AND POPLAR IN MINQIN OASIS

作　　者：赵明[1] 张锦春[1] 唐进年[1] 王键[1] 

机构地区：[1]甘肃省治沙研究所,甘肃武威733000

出　　处：《防护林科技》2000年第2期5-7,40,共4页Protection Forest Science and Technology

摘　　要：对民勤绿洲枣树林带、杨树林带及其防护下的作物进行经济效益对比分析 ,结果表明 :枣树林带防护下小麦的产量比杨树下的高 7.9% ,玉米的产量比杨树下的高 4 .2 % ;枣树林带胁地范围比杨树林带小 3～ 6m ;枣树林带的年均净收入是 6 584 .2 3元 / (hm2 林网 ) ,投入产出比是 9.2 8,分别是杨树林带的 16 .7倍和 3.78倍。枣树林带相对杨树林带经济效益明显。近林带 30m的范围内作物的产量曲线呈“S”型 ,可分为强烈减产带、平稳过渡带和产量恢复带。The result of comparative analysis of economic benefits under effect of shelterbelts of Cninese jujub and poplar in Minqin oases indicated,that the wheat yield under Chinese jujub shelterbelt is 7.9% higher than that under poplar shelterbelt,and the corn yield is 4.2% higher than one of the latter,the soil coerced scale is reduced by 3 m to 6m.The annual average income under Chinese jujub shelterbelt is 6384.23 yuan/hm 2,the ratio of input and output is 9.28,that is 16.7 and 3.78 multiples of the poplar ,s.The economic benefit under the Chinese jujub shelterbelt is higher obviously than poplar shlterbelt.It is suitable to spreading Chinese jujub shelterbelt in Minqin oasis.

关 键 词：民勤绿洲 枣树林带 杨树林带 胁地范围 经济效益 

分 类 号：F326.24[经济管理—产业经济] S727.2[农业科学—林木遗传育种]