perennial irrigation是什么意思

网络释义

用法例句

Field experiments were carried out in Awati County in Xinjiang to study the effect of multifunctional water absorbant,nitrogen(N)fertilizer and their interaction on Xinhai 16 long-fibre cotton under water stress and well-watered condition.

在新疆阿瓦提县进行了正常灌溉和亏缺灌溉条件下保水剂及保水剂与尿素配施在长绒棉新海16号施用效果的田间试验。

To sum-up the law of negative hydraulic head irrigation system,comparing of tomato experiment under negative hydraulic head irrigation and normal irrigation was carried out,soil water content distribution under different water supply tension was studied,the difference of plant sap flow and water consume under two irrigation methods was also analyzed.

为了总结负水头灌溉系统的供水规律,进行了负水头灌溉与常规灌溉条件比较下栽培番茄实验,分析了负水头灌溉系统不同吸力值下的土壤含水率动态变化,同时分析了负水头灌溉与常规灌溉耗水量以及植株蒸腾的差异。

QTL Analysis of Plant Height and Yield in Maize under Water Stress and Normal Irrigation Condition;

水分胁迫和正常灌溉条件下玉米株高、产量的QTL分析

design discharge of irrigation canal;normal flow of irrigation canal

灌溉渠道设计流量（正常流量）

Portable irrigation is on the increase.

移动式灌溉正在增加。

More than50% of cane land is irrigated, mainly by sprays or flooding of furrows. Use of low-pressure overhead irrigators and drip systems is increasing.

采用喷雾灌溉或渠灌的甘蔗地超过50%，使用低压高架灌溉器和滴水灌溉系统的正在增加。

To gain same yield, AFI need less water than CFI, its water saving efficiency is 33.3%.

收获等产量的玉米 ,交替隔沟灌溉比常规灌溉省水 33.3%。

Study on Irrigated Water Distribution and Its Use Efficiency among Two Varieties of Cucumber with Different Growing Type under Traditional Irrigation

常规灌溉条件下两种生长型黄瓜灌溉水分配及利用效率的研究

This paper presents calculation methods of irrigation system at irrigating area of Mopan Mountain in Wachang City and determines the best irrigating system of the irrigating area according to the analyzing comparison.

阐述了五常市磨盘山灌区灌溉制度的计算方法,经分析比较确定了该灌区的最佳灌溉制度。

Evapotranspiration and Water-saving Irrigation of Groundcover Plants in Common Use of Beijing Landscape;

北京常用园林地被植物蒸散与节水灌溉研究

What they are doing is transformation of arid land into irrigated fields.

他们正在做的工作就是变旱地为灌溉地。

They are already discovering how to colonise Venus and to irrigate the moon.

他们正在探索如何殖民于金星，和如何灌溉月球。

The Gray Remaining Modified Model s Application to the Forecasting of Irrigation Water Use;

灰色残差修正模型在灌溉用水量预测中的应用

No extra water enters underground supplies. Water from above-ground irrigation system often carry salts and chemical fertilizers into such supplies.

没有多余的水进入地下水源。而地面灌溉法的灌溉水常使各种盐分和化肥进入地下水源。

Deep pipe irrigation can be especially useful on slopes and in crusty soils where surface applied water will run off.

描述:深度管道灌溉在斜坡和硬质土壤环境中非常适用，因为在那些地方地表灌溉浪费水资源。

China s Irrigation Management and Participatory Management;

中国灌溉管理与用水户参与灌溉管理

Urea and ammonium nitrate solutions are most commonly used for N fertigation.

尿素和硝酸铵溶液是最常用的灌溉施肥氮肥品种。

The district where the experiment was carried out was the area watered by the Tennessee River in the U.S.A.

进行上述试验的地区正是美国田纳西河所灌溉的地区。

Farmers are being induced to switch to irrigation methods that use relatively low amounts of water;

农民们正受到指导来改变灌溉方式，从而使用相对少些的水；

Iran is building 88 dams for agriculture, hydro-electric power generation and drinking water.

伊朗正在兴建88座水坝，提供灌溉、水力发电和饮水之用。