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吉林省农田防护林网中杨树、玉米、大豆及秸秆利用经济效益分析

梁万君1;王福维2;林玉梅1;李清梅1;陈士刚1;林世杰1   

  1. 1吉林省林业科学研究院, 长春 130033;2吉林省林业厅, 长春 130021
  • 收稿日期:2007-08-19 修回日期:1900-01-01 出版日期:2008-06-10 发布日期:2008-06-10

Analysis of economic benefits of poplar, maize, soybean, and straw utilization in farmland shelterbelt networks in Jilin Province.

LIANG Wan-jun1;WANG Fu-wei2;LIN Yu-mei1;LI Qing-mei1;CHEN Shi-gang1;LI Shi-jie   

  1. 1Jilin Provincial Academe of Forestry Sciences, Changchun 130033, China
    ; 2Forestry Department of Jilin Province, Changchun 130022, China
  • Received:2007-08-19 Revised:1900-01-01 Online:2008-06-10 Published:2008-06-10

摘要: 2005年在吉林省松原市长岭县农田林网中设置样地,对样地内的白林2号杨、玉米、大豆的各个组分的热值、养分元素含量(C、N、P)进行了测定,并分析了杨树、玉米和大豆的年收益与作物秸秆利用效益。结果表明:秸秆利用前,玉米和大豆的年收益分别为5 110和3 965元·hm-2。将玉米和大豆秸秆地上部分用于发电,可产生113 318 800 kJ·hm-2(796元)和61 294 400 kJ·hm-2(430元)的热量,在粮食收益基础上提高经济收益15%和10%。用复合肥补偿秸秆利用所造成的营养元素损失,玉米和大豆需投入1 176和789元·hm-2,投入远大于收益。杨树年收益为3 690元·hm-2,低于玉米和大豆。

关键词: 土壤微生物群落, 微生物生物量, 代谢多样性类型, BIOLOG检测法, 森林恢复

Abstract: In 2005, sampling plots were set up in the farmland shelterbelt networks in Changling County, Songyuan City, Jilin Province to determine the gross caloric and nutrients (C, N and P) content of each component of poplars (Populus × cv. Bailin 2), maize (Zea mays) and soybean (Glycine max), with the annual economic benefits of poplar, maize and soybean as well as the profit of crop straw utilization analyzed. The results showed that the annual economic benefit per hectare was 5 110 yuan (RMB) for maize and 3 965 yuan for soybean. The aboveground parts of maize and soybean straws could generate caloric 113 318 800 kJ·hm-2 (796 yuan profit) and 61 294 400 kJ·hm-2 (430 yuan profit), respectively, when they were used to generate electricity, which could increase the profit by 15% for maize and by 10% for soybean. It was estimated that an investment of 1 176 yuan·hm-2 for maize and 789 yuan·hm-2 for soybean was needed if compound fertilizer was used to compensate the nutrient loss caused by straw utilization, indicating that such an investment couldn’t match the profit of straw utilization. The annual ecomomic benefit for poplar was 3 690 yuan per nectare, being lower than maize and sybean.

Key words: Soil microbial community, Microbial biomass, Metabolic diversity patterns, BIOLOG, Forest restoration