|
文摘
|
以江汉平原四湖涝渍地区的一个经围湖造田形成的典型农业微域为研究对象，在对其土壤和作物生长状况进行调查的基础上，探讨了退田还渔的必要性与具体方案。结果表明，对小型湖泊通过围湖造田所形成的农业微域，在人工排水和和土地平整不充分的情况下，其地貌和土壤还残留有原有湖泊的影响，处于原湖泊低处的土壤表现出明显的沼泽化和严重潜育化的特征。在该地区种植水稻产量比正常地区减产达16％－26．8％。利用数量化理论I确定了该地区适宜退田还渔的具体位置和面积。按照这一方案实施的结果，该地区从1997－2001年的5年中精养鱼塘面积增加9倍，养鱼的效益比种植水稻高5－10倍，还减轻了该地区夏季和冬季的排水压力。 |
|
其他语种文摘
|
Taking a typical farming micro-zone from the reclamation of a small lake in the waterlogged area in Jianghan Plain as an example,we discussed the necessity and the working plan for the wetland restoration from paddy fields to fishing pools.An investigation to the soil and the rice growth showed that the soil and the landforms retained some properties of the influences from the lake when the land reclamation was inadequately done in drainage and land leveling.The soil at the lower part of the original lake was featured by severe gleying.The yield of rice growing there decreased by 16%-26.8% in contrast to the nearby regions with normal soil.Apart from the lower yield,the rice was often subjected to flooding.By using the model of Quantification Theory I,a plan to identify the specific sites and area of the land converting from paddy fields to fishing pools was fulfilled.The implementation of the plan showed that the total fishing area restored from the paddy fields increased 9 times in comparison to that of the year in 1996 when the project started 5 years ago.The benefits of fishing was 5-10 times more than that of rice growing.The drainage pressure in the farming microzone was mitigated by fishing in the summer and winter at the same time. |
|
来源
|
自然资源学报
,2003,18(1):105-111 【核心库】
|
|
关键词
|
涝渍地区
;
退田还渔
;
案例分析
;
南方地区
|
|
地址
|
湖北农学院湖北省涝渍地开发工程技术研究中心, 湖北, 荆州, 434025
|
|
语种
|
中文 |
|
文献类型
|
研究性论文 |
|
ISSN
|
1000-3037 |
|
学科
|
社会科学总论 |
|
基金
|
湖北省“九五”重大科技项目
|
|
文献收藏号
|
CSCD:1353109
|
|
|
1.
金伯钦.
江汉湖群综合研究,1992:141-168
|
CSCD被引
1
次
|
|
|
|
|
2.
李劲峰. 四湖地区湖泊水域萎缩及其洪涝灾害研究.
长江流域资源与环境,2000,9(1):265-268
|
CSCD被引
13
次
|
|
|
|
|
3.
Vaclav Smil.
The Bad Earth Environmental Degradation in China,1984:59-65
|
CSCD被引
1
次
|
|
|
|
|
4.
侯学煜.
中国自然生态区划与大农业发展战略,1998:58-59
|
CSCD被引
1
次
|
|
|
|
|
5.
周光武.
自然灾害学报,2000,9(1):13-18
|
CSCD被引
2
次
|
|
|
|
|
6.
全国土壤普查办公室.
中国土壤普查技术,1992
|
CSCD被引
153
次
|
|
|
|
|
7.
石田宪治.
农业土木学会志,1981,49(10):53-61
|
CSCD被引
1
次
|
|
|
|
|
8.
黄永平.
湖北农学院学报,2000,20(3):236-240
|
CSCD被引
5
次
|
|
|
了解气象卫星更多信息，请访问