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The paper overviewed the relationship of organic agriculture and soil ecosystem, soil is living soil, nurtures depended on soil biodiversity for organic agriculture, soil management affected soil ecology, put forward the methods for build healthy soil.
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摘要论述了有机农业与土壤生态系统、有机管理对土壤和土壤微生物的关系,探讨了有机土壤管理对土壤生物体的生态效益,提出了有机农业土壤管理的措施。 |
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The paper overviews the formation and characteristics of the technique of rapid propagation of free virus in plant tissue culture, and its application in flower, wood, fruit tree, vegetable...etc., and introduces the main technical link to produce the see
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摘要综述了植物离体快速繁殖技术和脱毒技术的形成、特点及其在花卉、林木、果树、蔬菜等方面的应用,阐述了利用快繁与脱毒技术生产种苗的主要技术环节,包括培养基的作用和选配要点、外植体选取的原则和快繁与脱毒的不同要求、试管苗驯化的方法与移栽要求、种苗生产计划的制定与成本预算方法。 |
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The paper points out that the natural vibration frequency of strings can not be used to that of suspension cables.
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指出工程实际中不能将弦线的自振频率作为有集中荷载作用的悬索的自振频率。 |
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The paper points out that the reduction in DO oxygen along the river were the major factors in fluencing water quality and backwater reservoir ecosystem.
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指出溶解氧沿河道下游沿程逐渐减小,复氧系数降低,是引起水质恶化,破坏库湾生态平衡的主要因素。 |
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The paper points out that this judicature intervening system should keep a balance between judicial adjusting and company autonomy.
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在实务上,派生诉讼的司法审查要把握公司自治与司法干预相平衡的原则,并确定合理的审查范围。 |
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The paper points out the disadvantages of the rear axle housing was point out, provides the improvement was provided.
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经过少量试产,桥壳再无断裂现象,获得了满意的效果。 |
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The paper points out the inadequacy of production process in carbon cathode production and puts forward the improvement measures through the experience in the aluminium cathode production.
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摘要指出青铜峡铝业集团有限公司炭素厂炭阴极生产工艺设计中的不足,通过在铝用阴极生产中积累的经验,提出了改进方法。 |
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The paper points out the major problems in higher vocational school's textbook construction. Several proposals are made to reform the system.
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摘要文章指出了当前高等职业技术教育教材建设存在的主要问题,分析了高职教材的特点,构建了高等职业技术教育教材建设的对策建议。 |
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The paper points out the particularity and the problems of the books bidding of library, states the other means of selecting books supplier, and clarifies the means that evaluating supplier during the cooperation by library can be more impersonal and fits
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摘要本文论述图书馆图书招标的特殊性及面临的问题,说明招标不是图书馆选择图书供应商的合适方式;举出图书馆可采用的另外4种方式;阐明图书馆在实践中通过多次评估来选择供应商的方法,既能比较客观地评判,也符合图书采购的特殊性,有利于文献资源建设目标的实现。 |
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The paper points out the ultimate load of concrete thick pile cap with truss model at its bottom is highest based on the tests of four reinforced concrete piles caps with different forms of reinforcements of four piles.
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通过对4个底部配筋形式不同的桩基厚承台进行试验研究,表明底部钢筋按析架模型配筋的桩基承台承载力最高。 |
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The paper present an in-depth analysis about existence possibility, orientation, degree, limits of water physiology integration of clonal plants and their relation to such behaviors as functional differentiation, phenotypic plasticity and foraging behavio
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本文主要从理论上对克隆植物水分生理整合的存在性、方向性、整合的程度、范围及其与克隆植物的功能分工、表型可塑性和觅养行为、风险分摊等行为表现的关系进行了深入分析,并对迄今有关克隆植物水分整合的最新研究进展和研究方法进行了系统总结和评述。 |