太湖地区水稻土的发生分类
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THE GENESIS AND CLASSIFICATION OF THE PADDY SOILS, TAI-LAKE BASIN, JIANGSU PROVINCE, CHINA
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    摘要:

    太湖地区是太湖流域之泛称,包括西起莫干山、北止茅山、南达钱塘江、北到长江右岸的广大地区。在行政上分辖于两省一市(江苏、浙江省与上海市)。除西部与西北部有低山丘陵屏障外,主要是由三角洲形成的平原,故地形平坦开阔,河川纵横,平原上间有残丘兀立,并有众多湖泊,水土资源条件均比较优越。共有土地面积近3万平方公里,其中低山丘陵占20.8%,水面积占20.5%,平原好区占58.7%,可概括为二山二水六分田。

    Abstract:

    Tai-lake basin locates at the lower YanQtse delta under a northern monsoon climate. It covers an area of about 30 thousand square kilometers. Paddy fields occupy about 90% of the total cultivated area.Historically, most of the land are used for rice-wheat rotation annually. At present, when conditions are favorable, large areas have been adapted for three crops a year i.e. rice-rice-upland crops (barley, rape or wheat). It is one of the high productive areas in this country with annual yield averaging 9-10.5 tons of grain per hectare. Since paddy soils are developped under long time of submersion with periodical wet and dry cultivation, the main pedogenic process of paddy soil is alternative of reduction and oxidation accompanied with the formation of ferro-humic coating and streaks and formation of Paitu. In consequence, the morphological feamrc of paddy soils as well as their physical, chemical and biological properties are diverged Erom the original upland soils. The presence of a plowed layer, plowpan, perco-submugic layu or illuvial gley sported layer usually charactcrizes the specific features of a paddy soil profile.

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徐琪,陆彦椿,朱洪官.太湖地区水稻土的发生分类[J].土壤学报,1980,17(2):120-132. Xu Qi, Lu Yan-chun, Zhu Hong-guan. THE GENESIS AND CLASSIFICATION OF THE PADDY SOILS, TAI-LAKE BASIN, JIANGSU PROVINCE, CHINA[J]. Acta Pedologica Sinica,1980,17(2):120-132.

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  • 在线发布日期: 2013-02-25
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