Old and New Cultivars of Soya Bean (Glycine max L.) Subjected to Soil Drying Differ in Abscisic Acid Accumulation,Water Relations Characteristics and Yield

Two old (Huangsedadou and Longxixiaohuangpi (LX)) and two new (Jindou 19 (JD) and Zhonghuang 30 (ZH)) soya bean (Glycine max (L.) Merr.) cultivars were used to investigate the influence of soil drying on the abscisic acid (ABA) accumulation in leaves, stomatal conductance (g_s), leaf water relations, osmotic adjustment (OA), leaf desiccation tolerance, yield and yield components. The greater ABA accumulation was induced by soil drying, which also inducing g_s decreased at higher soil water contents (SWC) and leaf relative water content (RWC) significantly decreased at lower SWC in the new soya bean cultivars than in the old soya bean cultivars. The soil water threshold between the value at which stomata began to close and the RWC began to decrease was significantly broader in the new cultivars than in the old cultivars. The new cultivars had significantly higher OA and lower lethal leaf water potential than old cultivars when the soil dried. The old cultivars had greater biomass, but lower grain yield than the new cultivars in well‐watered, moderate stress and severe stress conditions. Thus with soil drying, the new soya bean cultivars demonstrated greater adaptation to drought by inducing greater ABA accumulation, stomatal closure at higher SWC, enhanced OA and better water relations, associated with increased leaf desiccation tolerance, greater water use efficiency and higher yield.     

几种粮堆控温方法的比较

文章介绍了4种房式仓控温方法，并进行了比较。实仓试验结果表明，对安全水分的无虫粮经防护剂处理，结合几种控温方法进行储藏，可使储粮安全度夏。     

优质中熟杂交早稻汕优45的选育与应用

汕优４５是湖北省咸宁市农科所用珍汕９７Ａ与早籼恢复系４５－１０配组选育而成的籼型杂交早稻新组合。该组合具有产量高、米质优，熟期短，抗病性强等特点，１９９９年３月通过湖北省品种审定。     

MVC模式在粮油检验信息管理系统中的研究与应用

随着Internet的迅速发展和Web技术的广泛应用,出现了许多基于Web工作方式和MVC设计模式开发的大型应用系统。通过分析目前流行的MVC模式的工作原理和性能特点以及研究基于MVC和浏览器/服务器（B/S）多层体系结构,在J2EE开发环境下采用JSP、Servlet、EJB等核心技术对粮油检验信息管理系统进行了框架设计。     

粘粒含量——夏季风的良好替代指标

通过对位于东亚季风区尾闾部位的沙沟剖面、东部半湿润区王官剖面、东部湿润区扣马剖面的气候代用指标的分析发现 ,黄土地层中 <5 μm的粘粒含量指标对各剖面中黄土-古土壤序列指示得比较清晰 ,可以较好地反映东亚夏季风的变化。对黄土地层中粘粒含量的测试及其环境意义分析以及与经典的东亚夏季风的替代指标———磁化率、红度指标 (a )的对比分析发现 ,粘粒含量指标的意义比较明确 ,适应范围更广 ,灵敏性也较高 ,是一比较可靠的、新的东亚夏季风的良好替代指标。     

华南地区高大平房仓综合控温模式试验

根据华南地区生态条件,通过高温期间开展空调调节仓温等综合控温措施,基本实现了低温、低药量保粮,延缓了储粮品质劣变并抑制了虫霉活动。     

扇形地上笼通风试验

采用扇形地上笼通风系统与”丰“字形成或地糟能风相比，可有交啬风速风量，消除粮通风列角，粮堆降温、降湿均匀、通风时间减少，大大节约投资经费，且适用于各种仓型。     

浅谈磷化氢抗性害虫的成因及治理

西方从宏观和微观两方面介绍了仓库磷化氢抗性害虫的成因，从多角度分析了抗性害虫的方法，提出了实施磷化氢抗性害虫综合治理的策略。     

赫章县山区综合开发总体发展战略及其对策

本文根据赫章县县情、山情,提出该县山区综合开发的发展战略及对策;并把优先解决粮食安全,改善生态环境,建力林果业、畜牧业及其加工业三大内容作为山区综合开发的建设重点与主导产业.     

Estimation of protein contents in winter wheat grain using satellite remote sensing

(Jpn. J. Soil Sci.Plant Nutr., 77, 317–320, 2006)