In the field it has been observed that Fe chlorosis occurs more often in the location with relative low-lying, pond nearby and irrigation channel side.

本文重點研究了禾谷類作物在缺鐵脅迫下植物鐵載體的分泌與氧化鐵的絡(luò)合作用成年人欧美片，植物鐵載體的分離及其在根際土壤中的分布。

This study choose Changle Gaoya reservoir irrigation areas as the study sites, through the installation of different ultrasonic equipment on open channel of non-uniform flow to study the flow gauging of non-uniform flow in open channel:(1)5 tracks ultrasonic open channel flow meter used to real-time monitoring the flow of velocity ,water depth and discharge;(2)Ultrasonic liquid level gauge used to real-time measure the upper level and tail level of the two sections ,then the computer calculated average water level, gradient of water table and discharge;(3)Change the open channel water conveyance into pipeline full flow water conveyance, installed the ultrasonic liquid level gauge and pipe flow gauge on the inflow point and surface of pipe, water level and discharge would detect in real time.

本研究以山東省昌樂縣高崖水庫灌區(qū)為研究地點在线精品亚洲一区二区大神，通過安裝在灌溉明渠上的不同超聲波設(shè)備對明渠非均勻流的測流進行了研究：(1)用五聲波超聲波明渠流量計對測流渠段的流速日本乱子伦视频、水深及流量進行了實時監(jiān)測；(2)用超聲波液位計將測流渠段的上下游兩斷面水位實時測出俄欧美激情A片在线观看，再用計算機分時段算出平均水位在线观看亚洲视频、水面坡降及流量；(3)將測流渠段明渠輸水改造成管道滿流輸水视频se，分別在管道進口前及管管上安裝超聲波液位計和管道式流量計欧美牲交免费一级A片影院，將水位和流量實時測出黑人无码按摩贯穿人妻AV。

Aimed at the increasing eco-environmental problems, including water shortage, water pollution, soil salinization, water loss and soil erosion, loss of function of the channel and river, biocenose degradation, etc, which severely infected the sustainable development for irrigation area, the main works in this paper are summarized as followed: constituting the measures of water resources shortages for developing agricultural water-saving technologies and adjusting agricultural structures; constructing the water polluting control and purification system of Mushroom lake: source control and decrement-sewage collection and treatment - channel ecological interception - wetland treatment -reservoir purification; putting forward the systematic projects for soil salinization and water loss and soil erosion of the integrated application of water conservancy agriculture and forestry.; constructing the ecological impervious channel model in west bank, from all of which theoretical bases and technical support for the eco-environmental rehabilitant in Manasi irrigation area were offered. All of these works were based on data collection, technical analysis, on-the-spot investigation, experimental research and technical development about Manasi irrigation area, etc.

通過對瑪納斯河灌區(qū)進行資料查閱收集、理論分析5Ⅴ99COm、現(xiàn)場勘察日本在线色视频、試驗研究和技術(shù)開發(fā)等途徑，針對瑪納斯河灌區(qū)存在的水資源短缺污视频久久久、水體污染色玖玖在线影院、土壤鹽漬化、水土流失日韩二区精品、溝渠河道功能缺失国产理论视频、生物群落退化等日益突出的嚴重影響灌區(qū)可持續(xù)發(fā)展的生態(tài)環(huán)境問題，制定了發(fā)展農(nóng)業(yè)節(jié)水技術(shù)人人黄色网、調(diào)整農(nóng)業(yè)結(jié)構(gòu)的灌區(qū)水資源短缺的措施色秀不卡视频免费，構(gòu)建了&源頭控制減量-污水收集處理-引水調(diào)控-渠道生態(tài)截留-濕地生態(tài)處理-庫區(qū)生態(tài)凈化&的蘑菇湖水污染控制與凈化系統(tǒng)；提出水利美女视频在线网站、農(nóng)業(yè)农村熟女拍拍尖叫、林業(yè)綜合應(yīng)用的灌區(qū)土壤鹽漬化、水土流失問題的綜合治理方案轻点肏我在线观看91；構(gòu)建了西岸大渠生態(tài)防滲型渠系模式婷婷在线综合，為瑪納斯河灌區(qū)生態(tài)環(huán)境修復(fù)建設(shè)提供了理論基礎(chǔ)和技術(shù)支持。

Irrigation Ditch：灌水溝

irrigation channel 進水渠道 | irrigation ditch 灌水溝 | irrigation farming method 灌溉農(nóng)專

irrigation canal system：灌渠系統(tǒng)

irrigation canal network 灌溉渠道網(wǎng) | irrigation canal system 灌渠系統(tǒng) | irrigation channel 灌溉渠

irrigation canal system：灌渠系統(tǒng)

irrigation canal network ==> 灌溉渠道網(wǎng) | irrigation canal system ==> 灌渠系統(tǒng) | irrigation channel ==> 灌溉渠