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| 半干旱区集雨型日光温室的C及N,P,K动态研究 | |
| 引用本文： | 梁学功,袁建立,黄文冰,王刚.半干旱区集雨型日光温室的C及N,P,K动态研究[J].兰州大学学报(自然科学版),2003,39(5):75-78. |
| 作者姓名： | 梁学功 袁建立 黄文冰 王刚 |
| 作者单位： | 1. 兰州大学,干旱农业生态国家重点实验室,甘肃,兰州,730000;国家环境保护总局,环境工程评估中心,北京,100012 2. 兰州大学,干旱农业生态国家重点实验室,甘肃,兰州,730000 3. 甘肃省交通科学研究所,甘肃,兰州,730030 |
| 基金项目： | 国家重点基础研究发展规划资助项目 ( G2 0 0 0 1 860 0 ) |
| 摘 要： | 探讨了半干旱区集雨型日光温室的C及N，P，K动态，结果表明：整个生长季节试验温室所固定的净生物量(干重)总量为143．86kg，折合能量1816．89MJ，其中用于经济产出(果实)的能量占总固定能量的40.77％；试验温室的净初级生产力为1．05％，与一般农田相当，温室中CO2浓度较低是造成这一结果的主要原因之一；西葫芦对土壤养分的消耗量明显高于黄瓜，尤其是对有效钾。 |
| 关 键 词： | 半干旱区 水窖 日光温室 生态系统 净初级生产力 |
| 文章编号： | 0455-2059(2003)05-0075-04 |
| 修稿时间： | 2002年6月17日 |
Study on the dynamics of C,N ,P and K of rain-harvesting sunlight greenhouse in semi-arid regions |
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| LIANG Xue-gong ,YUAN Jian-li,HANG Wen-bing,WANG Gang.Study on the dynamics of C,N ,P and K of rain-harvesting sunlight greenhouse in semi-arid regions[J].Journal of Lanzhou University(Natural Science),2003,39(5):75-78. | |
| Authors: | LIANG Xue-gong YUAN Jian-li HANG Wen-bing WANG Gang |
| Institution: | LIANG Xue-gong 1,3,YUAN Jian-li1,HANG Wen-bing2,WANG Gang1 |
| Abstract: | Traditional sunlight greenhouse,which is regarded as a kind of efficient productive way of ecoagriculture,is not fit in non-irrigated semi-arid zone.By using rain-harvesting cell to provide necessary water for sunlight greenhouse,the problem is solved.In this paper,dynamics of C,N,P and K of rain-harvesting sunlight greenhouse in semi-arid areas were discussed.The results showed that:from 11/6/1997 to 5/4/1998,net production of dry material of test greenhouse is 143.86 kg,corresponding to 1 816.89 MJ of energy,of which 40.77% was used in economic production (fruit);net primary productivity of the greenhouse is as low as 1.05%,low concentration of CO 2 being one of the reasons;consumption of N,K and organic material in the soil of summer squash land is much higher than that of cucumber land,especially to K. |
| Keywords: | semi-arid regions rain-harvesting cell sunlight greenhouse ecosystem net primary productivity |
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