|
|||||
|
|
| 水稻连续免耕抛栽对土壤理化和生物学性状的影响 | |
| 引用本文： | 吴建富,潘晓华,石庆华,漆英雪,刘宗发,胡金和.水稻连续免耕抛栽对土壤理化和生物学性状的影响[J].土壤学报,2009,46(6):1132-1139. |
| 作者姓名： | 吴建富 潘晓华 石庆华 漆英雪 刘宗发 胡金和 |
| 作者单位： | 1. 江西农业大学国土资源与环境学院,南昌,330045;江西农业大学作物生理生态与遗传育种教育部重点实验室/农业部双季稻生理生态与栽培重点开放实验室/江西省作物生理生态与遗传育种重点实验室,南昌,330045 2. 江西农业大学作物生理生态与遗传育种教育部重点实验室/农业部双季稻生理生态与栽培重点开放实验室/江西省作物生理生态与遗传育种重点实验室,南昌,330045 3. 江西省农业技术推广总站,南昌,330046 4. 南昌市农业科学研究所,南昌,330009 |
| 基金项目： | 国家"十一五"科技支撑计划项目，江西省教育厅项目共同资助 |
| 摘 要： | 于2005~2007年在双季稻田以翻耕处理为对照,研究了水稻连续免耕抛栽对土壤理化和生物学性质的影响。结果表明,稻田免耕1年(2季),有利于土壤物理性状的改善,随着免耕时间(3年6季)的延长,土壤物理性质变差。但免耕2年后,采用紫云英和稻草还田能降低免耕稻田的土壤容重,提高总孔隙度和非毛管孔隙度。免耕有利于土壤养分在表层土壤富集。土壤中三大类微生物总量免耕处理小于翻耕处理,免耕土壤细菌的数量增加,而放线菌和真菌的数量减少。土壤中脲酶活性增加,而过氧化氢酶和过氧化物酶的活性均降低。脲酶、过氧化氢酶和多酚氧化酶的活性均与土壤有机质、全氮含量呈极显著相关,而过氧化物酶活性则与土壤全氮和速效钾含量呈极显著相关。该结果有水稻免耕抛秧栽培技术的推广应用的参考意义。 |
| 关 键 词： | 稻田 水稻 免耕抛栽 土壤理化性质 |
Effects of continuous no-tillage and cast-transplanting on soil physical, chemical and biological properties |
|
| Wu Jianfu,Pan Xiaohu,Shi Qinghu,Qi Yingxue,Liu Zongfa and Hu Jinhe.Effects of continuous no-tillage and cast-transplanting on soil physical, chemical and biological properties[J].Acta Pedologica Sinica,2009,46(6):1132-1139. | |
| Authors: | Wu Jianfu Pan Xiaohu Shi Qinghu Qi Yingxue Liu Zongfa and Hu Jinhe |
| Institution: | 1 College of Land Resources and Environment,Jiangxi Agricultural University,Nanchang 330045,China)(2 Key Laboratory of Crop Physiology,Ecology and Genetic Breeding,Ministry of Education/Key Laboratory of Crop Physiology,Ecology and Cultivation of Double Cropping Rice,Ministry of Agriculture/Key Laboratory of Crop Physiology,Ecology and Genetic Breeding of Jiangxi Province,Jiangxi Agricultural University,Nanchang 330045,China)(3 Jiangxi Agricultural Technology Extension General Station,Nanchang 330046,China)(4 Agriculture Science Institute of Nanchang City,Nanchang 330009,China) |
| Abstract: | A three year (2005～2007) experiment was conducted in paddy fields under a double rice cropping system to study effects of continuous no tillage and cast-transplanting on soil physical, chemical and biological properties. Results show that no-tillage treatment for one year (two crops)improved soil physical properties, but no-tillage treatment for three years (six crops), worsened soil physical properties. However, the effect of no tillage treatment for two years varied. In the soil incorporated with milk vetch and rice straw, it decreased soil density of the cultivated horizon, but increased total porosity and non-capillary porosity therein, and helped nutrient enrichment in the surface soil layer. Soil analysis showed that the no-tillage field was less than the control, plowed field in total amount of three groups of soil microbes. However, in no-tillage field, the amount of soil bacteria increased, while that of soil actinomycosis and fungi reduced, and urease activity in surface layer soil increased, while catalase and peroxidase activity reduced. Significantly positive correlations were observed of soil organic matter and total N with urease, catalase and polyphenol oxidase activity and, significantly positive correlations of soil total N and available K with peroxidase activity and. The findings provide a valuable reference for popularization and application of the technology of no-tillage and cast transplantation of rice in the future. |
| Keywords: | Paddy yield Rice No-tillage and cast transplanting Soil physical and chemical properties |
| 本文献已被 CNKI 万方数据 等数据库收录！ | |
| 点击此处可从《土壤学报》浏览原始摘要信息 | |
| 点击此处可从《土壤学报》下载免费的PDF全文 | |