Long-term rice-based cropping system effects on near-surface soil compaction

来源 :农业科学(英文) | 被引量 : 0次 | 上传用户:shuangsssss
下载到本地 , 更方便阅读
声明 : 本文档内容版权归属内容提供方 , 如果您对本文有版权争议 , 可与客服联系进行内容授权或下架
论文部分内容阅读
Irrigated rice (Oryza sativa L.) production is as-sociated with frequent cycling between anaero-bic and aerobic conditions, which can lead to a greater rate of soil organic matter (SOM) de-composition, thus potentially increasing soil bulk density (BD) ov
其他文献
产后失血性休克是由于大量失血导致有效循环血量骤减而引起的周围循环衰竭,早期诊断及抓紧时机抢救可改善孕产妇预后.本院近8年发生产后失血性休克38例,现对其原因及处理进行
良性前列腺增生症(BPH)是老年男性最常见疾病之一。随着中国老龄化社会的到来,BPH已经成为很重要的社会健康问题,但其确切的发病因素至今仍不完全清楚。近年来,大量的研究表明,除了
Wheat ear insects in large scale winter wheat field in Salzmünde (SaxsonyAnhalt) central Germany were evaluated. The present study aimed at studying the ab
Effects of crop rotation on soybean (Glycine max (L) Merr.) seed composition have not been well investigated. Therefore, the objective of this study was to inve
泪道阻塞是眼科常见病,尤其在农村及偏远山区更是多见,延迟治疗可引起严重并发症.笔者对45眼采用挂线疗法,治疗效果满意,现报告如下.
Pyruvate is a key intermediate at the branchpoint of anaerobic and aerobic energy metabolism. Its transport into the mitochondrial matrix is necessary prior to
目的探讨电话随访在剖宫产出院产妇健康指导中的应用。方法对165例剖宫产出院产妇就产后康复及新生儿护理进行电话回访式健康指导。结果产后42 d内产妇的产后康复及新生儿护
Different pollutants in soil, water, and other parts of the environment are so important in portraying environmental pollution, and could come from different so
新生儿臀红是一种常见的皮肤病,新生儿皮肤娇嫩,易受大小便刺激致臀红,如果不及时治疗,将会进一步出现疼痛、感染,严重者还会造成溃疡.
The genetic relationships among twenty-five accessions of Garcinia kola using six Random Amplified Polymorphic (RAPD) primers were evaluated in this study. The