首页 | 本学科首页   官方微博 | 高级检索  
     

湖南省主要稻田土壤供钾能力的研究
引用本文:郑圣先,罗成秀. 湖南省主要稻田土壤供钾能力的研究[J]. 中国农业科学, 1989, 22(1): 75-82
作者姓名:郑圣先  罗成秀
作者单位:湖南省农业科学院土壤肥料研究所(郑圣先,罗成秀),湖南省农业科学院土壤肥料研究所(戴平安)
摘    要: 本文通过对土壤的粘土矿物,含钾矿物,钾素含量状况和供钾特性进行了分析,阐明了湖南省主要稻田土壤供钾能力。研究结果表明,紫泥田、紫潮泥田供钾性能好,早稻施钾效果不明显,晚稻施钾能有一定效果。黄泥田的供钾性能次之,早稻、晚稻施钾效果显著。红黄泥田、灰泥田、麻沙泥田和河沙泥田等,供钾性能差,早稻、晚稻施钾效果极显著。

关 键 词:供钾能力  含钾矿物  粘土矿物  速效性钾  缓效性钾

POTASSIUM SUPPLYING CAPACITY OF MAIN PADDY SOIL IN HUNAN PROVINCE
Zheng Shengxian Luo Chengxiu Dai Pingan. POTASSIUM SUPPLYING CAPACITY OF MAIN PADDY SOIL IN HUNAN PROVINCE[J]. Scientia Agricultura Sinica, 1989, 22(1): 75-82
Authors:Zheng Shengxian Luo Chengxiu Dai Pingan
Abstract:Greep house.field and laboratory experiments were conducted to study the potassium supplying-capacity of main paddy soil in Hunan province. Results indicated that purpla clayey paddy soil derived from purplish shale and purple calcareous loamy paddy soil derived from lacustrine deposits contained dominantly clay mineral with illite and chlorite the co(?)tent of K. hearing mineral ranged from 31.18-35.66%, while paddy soil derived from other parent material contained dominantly clay mineral with kaolinite and the content of K hearing mineral ranged oniy 15.04-20,67%. The mean value of total potassium slowly potassium, available potassium in main paddy soils of Hunan province are 1.86%, 268.4ppm and 79.8ppm respectively. The potassium content of the main paddy soils in the province belongs to the medium and low level as compared with that in. other regions of China.Field experiment results showed that the response of early rice to K fertilizer on purple ciayey paddy soil and purple calcareous loamy paddy soil were insignificant due to their high potassium content, hut that of late rice was significant; the response of early and late rice to K fertilizer on yellow clayey paddy soil was significant. However. the response of rice to K fertilizer on reddish yellow clayey paddy soil. coarse sandy paddy soil sandy paddy soil and aliuvial leamy paddy soil were very significant due to their low potassiuro content and the less K supplying capacity of soils.
Keywords:NULL
本文献已被 CNKI 维普 等数据库收录!
点击此处可从《中国农业科学》浏览原始摘要信息
点击此处可从《中国农业科学》下载全文
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号