Long-Term No-Tillage Direct Seeding Mode for Water-Saving and Drought-Resistance Rice Production in

来源 :水稻科学(英文版) | 被引量 : 0次 | 上传用户:wdongjiang
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
To study the effects of long-term no-tillage direct seeding mode on rice yield and the soil physiochemical property in a rice-rapeseed rotation system, a comparative experiment with a water-saving and drought-resistance rice (WDR) variety and a double low rapeseed variety as materials was conducted under no-tillage direct seeding (NTDS) mode and conventional tillage direct seeding (CTDS) mode for four years, using the CTDS mode as the control. Compared with the CTDS mode, the actual rice yield of WDR decreased by 8.10%at the first year, whereas the plant height, spikelet number per panicle, spikelet fertility, 1000-grain weight, grain yield, actual yield, and harvest index increased with no-tillage years, which led to the actual yield increase by 6.49%at the fourth year. Correlation analysis showed that the panicle length was significantly related to the actual yield of WDR. Compared with the CTDS mode in terms of the soil properties, the pH value of the NTDS mode decreased every year, whereas the contents of soil organic matter and total N of the NTDS mode increased. In the 0-5 cm layer of the NTDS mode, the soil bulk decreased, whereas the contents of soil organic matter, total N, and available N increased. In the 5-20 cm layer of the NTDS mode, the available N and K decreased, whereas the soil bulk, contents of soil organic matter, and total N increased. In summary, the NTDS mode increased the rice yield, and could improve the paddy soil fertility of the top layer.
其他文献
目的 总结黎月恒教授运用中药治疗肺癌的用药经验.方法 选取黎月恒教授2010~2014年湖南省肿瘤医院中医科门诊确诊为“肺癌”的处方156张,所有药物依据《中药学》和《中药大辞
During the 11^th Five Year Plan period, China improved its policy system for the overall strategy of regional development, and established and completed the pol
欧债危机、美元疲软、人民币升值,后金融危机时代,世界经济变化多端。希腊债务危机的暂时缓解,难掩欧元区依旧不明朗的前景;美国依靠发新债还旧债支持投资增长的模式,似乎已
目的:探讨阿卡波糖对餐后血压变异性(BPV)的影响。方法纳入研究对象150例,其中单纯糖尿病组(A 组)50例,单纯高血压组(B 组)50例,健康对照组(C 组)50例。比较各组阿卡波糖治疗前后血压变异
本文运用问卷调查法、数理统计法,对包头市高校教师的参与体育健身现状进行抽样调查,对这个群体参与体育健身现状、活动场所、锻炼形式、参与体育锻炼原因进行调查和分析,并
针对延长油田注水系统在油田开发过程中存在普遍的结垢问题,对延长油田某采油厂注水系统的结垢特性趋势从污水在井下输送系统和油层中的结垢试验分析进行了研究。同时,对硫酸
Parboiling is an age old technique carried out to improve rice quality.Different grain parboiling techniques have been traditionally followed and scientifically
High nitrogen(N)input features China’s intensive rice production system.To elucidate N and genotype effects on accumulation of macronutrients and micronutrient
2012年1月,中国热带农业科学院海口实验站引入夏黑、黑色甜菜和巨峰3个品种,在文昌市进行温室大棚避雨及根域限制栽培,并观察其物候期、生物学特性和果实经济性状。结果表明,
在果园环境下,采用替代试验对比研究了4种1年生牧草——高丹草、紫花苜蓿、墨西哥玉米和籽粒苋与入侵我国华北地区的一种外来植物黄顶菊之间的相对竞争表现;通过设置不同牧草