【摘 要】
：
In general, cool climate region is defined as the transitional region between mid-temperate zone and warm temperate zone, with about-10℃ ～-14℃ of the average temperature in January, and covers vast ar
【出 处】
：
1st International Apple Symposium (第一届世界苹果大会)
论文部分内容阅读
In general, cool climate region is defined as the transitional region between mid-temperate zone and warm temperate zone, with about-10℃ ～-14℃ of the average temperature in January, and covers vast areas in north-east and north-west of China.Only a few kinds of fruit trees are able to grow well in that region, and those fruit qualities are not good enough.
其他文献
湘江流域是湖南省经济建设的重心,被湖南省人民称为"母亲河".但是在湘江流域分布大量的化工及有色冶炼企业严重污染了湘江河流,水体底泥中的重金属的污染已经成为当前一个重要环境问题.本研究以湘江某段典型重金属污染区的F、X、H、S四个样点底泥为主要研究对象,利用限制性片段多态性分析(PCR-RFLP)方法研究微生物群落结构的多样性,并分析重金属对微生物群落结构的影响.结果表明四个样点的底泥是多重重金属复
随着海水养殖中抗生素的大量使用,抗生素残留已成为一种严重的生态污染,对海底沉积物的微生物生态平衡造成了重大影响.但是,目前有关抗生素在扩散过程中所形成的不同浓度梯度,其在沉积物中的污染效应及其对微生群落具体到种群水平影响的研究鲜见报道.基于此现状,本研究以海水养殖区表层沉积物、以及养殖中常用的抗生素氟苯尼考为研究对象,对沉积物分别进行氟苯尼考50μg/g、 3μg/g、 0.3μg/g三个浓度梯度
随着上海市经济的迅速发展,人口飞速增长,对水资源的需求日益增加.淀山湖作为上海的饮用水源保护地之一,近年来蓝藻水华频发,富营养化程度不断加剧,水环境安全受到严重威胁.上海青草沙水源地的开发为上海提供了优质的新水源,但其也存在潜在藻类暴发的风险.因此如何保证饮用水源的水质安全和防治富营养化,成为上海供水安全的当务之急.本研究以上海两大水源地:淀山湖和青草沙水库水体中的蓝藻群落为研究对象,通过采样分析
非点源污染是发生在大地理空间尺度内的环境问题,因其影响范围广、交换过程复杂、难于控制,一直是环境治理领域的难题.菌根(Mycorrhiza)作为真菌与植物根系形成的复合吸收器官,因其在植物-土壤系统内元素循环过程中扮演的重要角色,有望成为应对当前广泛存在的非点源污染问题的有效手段.针对农业非点源污染发生历经的"产、流、汇"三个关键控治单元,施以菌根为核心的生物技术,形成以基于源头减量的农业清洁生产
Apple breeding and cultivation including new cultivars is among the most attractive and important issues for apple researchers.As almost all apple cultivars shows gametophytic self-incompatibility (GS
To cope with iron (Fe) deficiency, plants have evolved a wide range of adaptive responses from changes in morphology to altered physiological responses.Recent studies have demonstrated that nitric oxi
Apple canker caused by Valsa mali is a destructive disease that causes seriouseconomic losses in China.In this study, the dynamics of release of conidial masses (cirri) in appleorchards were studied i
A majority of works developed in apple tree architecture and physiology in past decades are based on trees grown in monocultivar high density orchards.Here we propose to connect knowledge on the tree
Predicting harvest fruit size influences agronomic management such as pruning, thinning and irrigation.Post-harvest management options used to manage variability in fruit size and blemishes (e.g.sunbu
Contemporary apple orchard planting systems become yield-limited (max.100-120t ha-1) at mature canopy size because light interception by the planting system typically peaks at a maximum of 55-65％ of t