A Brief Study on pH, Exchangeable Ca<sup>2+</sup>and Mg<sup&g

来源 :农业科学(英文) | 被引量 : 0次 | 上传用户:dairui1985
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
pH, exchangeable Ca2+ and Mg2+ of soil can influence the yield and quality of flue-cured tobacco. Xuancheng city is the dominant tobacco-planting region in Anhui province since 2008. A general soil survey was conducted in Xuancheng city to understand the
其他文献
Reference evapotranspiration (ETo) is a key factor in determining the amount of water needed for crops, which is crucial to correct irrigation planning. FAO Pen
As a special product, the cultivation and production of grain directly affect the consumption of people, which has an important influence on the development of
目的研究原核表达重组人白介素-3(rhIL-3)及其对脐带血造血干细胞体外增殖的影响。方法构建pET-43.1-rhIL-3表达载体,克隆至BL21菌株,并进行中试发酵生产,所得包涵体经透析复性后,采
本研究探讨两种钙浓度透析液对糖尿病维持性血液透析患者血压的影响,现报告如下。1临床资料本院血液净化中心进行维持性血液透析的糖尿病患者15例,男12例,女3例;平均年龄(56.6
Field trial was carried out at Ismailia Research Station, Ismailia Governorate, Egypt to evaluate some quinoa genotypes under arid environment of sandy soil for
本文介绍500kV超高压变电站内人体感应电流的模拟试验原理和方法,对沙岭子电厂500kV超高压变电站厂区人体感应电流模拟试验测量结果进行了分析。
<正> 乡镇卫生机构是农村三级医疗预防保健网的枢纽,是农村医疗卫生服务体系的重要“基石”,但随着改革开放的深入和市场经济体制不断完善,乡镇卫生机构的管理体制、卫生资源
The available contents of microelements in the topsoil can influence the yield and quality of flue-cured tobacco. Xuancheng is the dominant tobacco-planting reg
我市根据当地实际情况,从2005年6月1日开始实施单病种定额付费制度,现将实施情况介绍如下: 1选择单病种的条件和方法1.1条件:一是病种发生率高,占医疗机构费用比重大;二是技
1991年湖南、海南、云南在高考试题中开始采用此新题型。