1) Dry condition at growing stage
生育期干旱
2) Ecological drought identification period
生态干旱识别期
3) Drought periods
干旱期
1.
Multi-objective planning method for reservoir water-supply risk analysis during drought periods;
干旱期水库供水风险分析的多目标规划方法
4) drought period
干旱期
1.
Analysis on the applicability of water-supply risk indexes for water resources system during drought period;
干旱期水资源系统供水风险指标适用性分析
2.
Several major indexes are described, which are often employed for expressing reservoir operation performance in drought period, and necessity of researches on water-supply projects operation and regulation in drought are stressed.
阐述了干旱期供水工程运行调度研究的必要性以及目前水资源研究领域普遍使用的表达干旱期供水水库运行性能的一些主要指标 ;对普遍使用的求解运行策略的限制供水规则模型和混合整数规划模型进行了恰当描述 ;最后介绍了混合整数规划模型的一应用实例 ,说明研究方法的可行
3.
In this paper, risk theory has been used in the management of water resources during drought period, and the corresponding indexes such as risk, reliability, resiliency and vulnerability have been given.
把风险分析方法用于干旱期的水资源管理,给出了相应的风险、可靠性、恢复性和易损性等具体的风险指标。
6) short-term drought
短期干旱
1.
Effects of nitrogen on the dry matter weight,nitrogen accumulation and distribution,yield and fiber quality of cotton under short-term drought and after re-watering during flowering and boll-forming stage were studied.
通过盆栽试验进行水分(正常灌水和干旱后复水)和施氮处理(0、240、480kgN·hm-2),研究花铃期短期干旱再复水后氮素对棉花各器官干物质重、氮素累积与分配及产量与品质的影响。
补充资料:茶树育种生育期鉴定
茶树育种生育期鉴定
appraisal of development stage in tea breeding
茶树,种生,期鉴定(appraisal of de-veloPment sta罗in tea breeding)对茶树育种在生长发育过程中经历的时间所表现的性状进行评定。包括年生育期和个体生育期的鉴定,利用生育期的不同形态特征和经济性状,以及对外界环境条件的反应,有目的地加以鉴定。在年生育期内,趁早春可鉴定越冬芽萌发的早晚,对温度的反应,芽叶色泽、大小及茸毛的多少,春梢的生长势和生长量;夏季高温干早季节,可鉴定抗热及耐早性的强弱,芽叶色泽的变化,特别是紫色芽叶的出现,新梢生长量的变化,病虫害的感染程度;冬季可以利用自然条件鉴定茶树对低温的忍耐程度,特别是最低临界温度的反应。年生育期内,还可以鉴定构成产量各因子的表现,各季芽叶的比例,不同时期芽叶质量和内含成分的变化,开花结实习性等。个体生育期鉴定,是指从种子出苗到成龄进入全面采摘阶段,主要是鉴定种子的生活力,幼苗的适应能力、树型、树姿、分枝习性、叶片着生状态、树幅树高的变化、发芽密度等生育特点。单株产量和单位面积内产量增长幅度的变化,也是鉴定茶树个体生育期的重要内容。 (王融初)
说明:补充资料仅用于学习参考,请勿用于其它任何用途。
参考词条