查询词典 irrigation

By using the HYDRUS computer program, one dimensional water salt movement was simulated under diffirent well canal combined irrigation schemes with typical irrigation regime for cropping wheat in spring and corn in late summer.

针对灌区土壤地下水位高、地下水矿化度高、潜水排泄以蒸发为主等原因，研究了基本灌溉模式、井渠结合灌溉模式的改变对不同程度盐碱地改良的效果，提出适合银北灌区不同盐碱地的灌溉制度

The results showed that the "intermit irrigation" is an ideal irrigation technique.

文摘：对低洼地种稻增产灌溉技术进行了3种对比试验研究，结果表明"间歇灌溉"是理想的灌溉技术，同时指出了应用间歇灌溉技术时应注意的问题。

The results were as following. Compared with C, total irrigation water amount for A and F decreased by 26.27% and 21.20%, irrespectively, the yield decreased slightly while water use efficiency and production efficiency of irrigation water increased markedly, which of A increased by 29.21% and 16.84%.

结果表明，半边固定灌溉和两边交替灌溉的总灌水量比均匀灌溉分别减少26.27%和21.20%，其产量仅略微下降，水分利用效率和灌溉水生产效率明显增加，其中，交替灌溉分别增加29.21%和16.84%。

In a reservoir irrigation system, adjustment of water distribution in time is realized by reservoir operation, and operation of irrigation canal systems adjusts water distribution in space.

对于水库灌区，调节水量在时间上的分配是通过对水库的调度实现的，田间配水则是水量的空间分配过程。

The water delivery scheduling problems of multilevel optimal irrigation canal system can be solved, which meet the requirement of irrigation management.

2针对多级灌溉渠系配水的问题，基于大系统分解协调的思想，建立了一种解决多级灌溉渠系配水优化编组问题的模型。

For sustainable utilization of water resources, development of systems of well irrigation with well drainage and canal irrigation with ditch drainage was needed.

为水资源的可持续利用，要发展井灌井排渠灌沟排，以开发利用当地浅层地下水包括微咸水和咸水为基础，以引调可利用的地表水补源。

The reference crop evapotranspiration(ET0) in Guanzhong region was calculated with the Penman-Monteith equation. The change characteristics of meteorological factors and ET0 over year were analyzed. The regressing relation between ET0 and geography factors was established. Space distribution of ET0 based digital elevation model was obtained. The water consumption model of main cropes was established using the crop cofficient method. The irrigation water requirement of main crop and it's space distribution based DEM under the different precipitation probability was obtained, which advanced the calculation precision of ET0 from spot scal to regional scal. The concept of water consumption under the irrigational scal was proposed. The water consumption model of different water user and model of groundwater balance based on the water consumption of Baojixia irrigation district was established. Which can refects the relation between water utilization, water consumption and change amount of groundwater resouces.

深入分析了关中地区气象要素的变化趋势，用Penman-Montainth 公式计算了参考作物蒸发蒸腾量（ET0），建立了ET0与地理要素的多元回归关系，获得了基于数字高程模型DEM的关中地区ET0的空间分布图；用作物系数法建立了关中主要作物生育期耗水模型，获得了主要作物在不同降雨条件下的灌溉需水，以及基于DEM的主要作物灌溉需水空间分布图，提高了作物蒸发蒸腾量由点到面尺度转换过程中的估算精度；界定了灌区尺度的耗水量的概念，包括用水耗水和非用水耗水，建立了灌区耗水量计算模型及基于耗水量变化的浅层地下水均衡模型，能较好地反映灌区引水量、耗水量及地下水蓄变量之间的内在关系。

Low-pressure drip irrigation is an important direction of drip irrigation technology in the future.

因此低压滴灌将是今后滴灌技术发展的一个重要方向。

Therefore, low-pressure drip irrigation is an important direction of drip irrigation technology in the future.

然而在灌水器工作压力小于5m的低压条件下。

Malvasia grafted on rootstocks 3309C, 420A and 110R, respectively, was planted, and the physiological and biochemical responses of these scion/rootstock combinations to bilateral alternative irrigation and unilateral irrigation were studied.

利用自制木箱对嫁接在3309C、420A和110R砧木上的玛瓦斯亚葡萄进行双侧根区交替灌溉和单侧灌溉两种水分胁迫处理，以探讨不同葡萄砧穗组合对干旱的适应能力。

Neither the killing of Mr Zarqawi nor any breakthrough on the political front will stop the insurgency and the fratricidal murders in their tracks.

在对危险的南部地区访问时，他斥责什叶派民兵领导人对中央集权的挑衅行为。

In fact,I've got him on the satellite mobile right now.

实际上 我们已接通卫星可视电话了