灌水量 的英文怎麼說
中文拼音 [guànshuǐliáng]
灌水量
英文
irrigation reuirement-
Fertigation has become increasingly popular across the united states as water costs rise and issues related to the environment dictate more precise control of both irrigation water and fertilizer, especially nitrogen
隨著灌水費用的提高和環境上要求更精確地控制灌水量和施肥量尤其是氮肥,在美國灌溉施肥越來越普遍。The amount of nitrogen leached was increased with the increasing amount of water applied. and compared to the treatment of fertilizer added as flooding irrigation ( fif ), the treatment of fertilizer added in drip irrigation ( dif ) significantly decreased the nitrogen leached
氮素淋溶量隨灌水量的增加而增加;在淋失的n素形態中,以尿素態氮為主,其次為硝態氮,銨態氮的淋失量最低。Then, how should we determine the average amount of dripper in little irrigation district ? an operational measure is to make average pressure position of drip line certain and determine the flux of emitters in average pressure position
在灌水小區內,能夠準確及時的測定灌水小區內灌水器的平均灌水量,才能精確控制灌水小區的灌水量。Including irrigation time, frequency, and quantity of water, of which based on the evapotranspiration rate and crop coefficients in different months and the rank of visual appearance of different date
根據草坪質量與土壤含水量、土壤水勢的相關性及作物系數、蒸發量等參數,準確計量其灌水時間、灌水量和灌水頻率。Results showed : ( 1 ) if the proportion of water in the soil is lower than wilting coefficient, and if irrigating water is very little, ( irrigating water is spreading horizontally and vertically ) the relationship between the horizontal width ( x ) and the ? rtical depth ( y ) is remarkable. the equation is y - 0. 02 12x2 + l. 8546x - 17. 88. the related coefficient is r = 0. 9350
結果表明: ( 1 )在土壤含水量低於萎蔫系數的乾燥條件下,進行微量穴滴灌,滴灌點土壤濕潤面直徑x與最大垂直面滲透深度y呈顯著相關,數學模型為: y = - 0 . 0212x ~ 2 + 1 . 8546x - 17 . 88 ,相關系數r = 0 . 9350 ( 2 )在微量補水灌溉情況下,只有灌水量大於4000ml /穴,才能使滴灌水滲透到20cm以下土層,達到作物根系集中層,否則水分很難被作物吸收,造成滴灌水的浪費。Results show that the growth of plants is limited, growth of root is enhanced, water consumption is reduced, water use efficiency increase apparently, yield has little reduce when reducing irrigation water and detaining irrigation time properly
結果顯示:分蘗拔節期適當減少灌水量並推遲灌水時間,能抑制春小麥地上部分的生長,促進根系生長,減少總耗水量,提高水分利用率。( 2 ) in case of specified volume of applied water, the shape of wetted soil volume is influenced by discharge rate
( 2 )在灌水量一定的情況下,滴頭流量對濕潤體的形狀有明顯的影響。( 1 ) the actual amount of water used to irrigate in the filtration irrigated area was reduced by 58. 15 % to 81. 63 % compared with the general irrigated area, and the ultilization ratio of the moisture content increases by 50. 5 % to 81. 7 %
綜合考慮灌水量與產量的合理成本效益比和旱區的缺水問題,優先採用灌水量為133 . 33mm的滲灌。水分利用效率達到23 . 1kg mm ? hm ~ 2 ,實際灌水量比漫灌區下降了69 . 88 ,效果明顯。A experiment on the water movement rule of the soil had been done before the field experiment, and then four irrigation regimes were placed in it, that is to say, three sub - irrigated areas hi contrast to a general irrigated area
在大田試驗前,做了滲灌土壤水分運動規律試驗,然後,在大田試驗中設置了四個處理,即:三個水平滲灌區和一個漫灌區對照。結果表明: ( 1 )滲灌區的實際灌水量比漫灌區下降了58 . 15 81 . 63 。This dissertation describes the studying of the whole construction of water - saving irrigation expert control system, the realization of hardware and software and low - cost soil - moisture sensor which is needed for water - saving irrigation. the distributed control system based on bus. according to real - time data of soil - moisture, water - level of sump, pressure of tube, etc. and irrigation knowledge in expert knowledge bases, it can make decisions such as when to irrigation, the water quantity to irrigation and the cost and benefit of the irrigation
本文對節水灌溉專家控制系統的總體結構、軟硬體實現以及節水灌溉急需的低成本土壤水分傳感器進行了研究,系統採用了基於總線的分散式控制結構,根據實時檢測的土壤水分、水槽水位、管道壓力等實時參數,知識庫的作物灌溉知識,分析決策灌水時間、灌水量、灌溉成本及灌溉效益。Moreover, the recirculation of leachate in landfills is also studied to evaluate the potential influence on the effectiveness of clay liners. the results show that the quantity of recirculation leachate should be controlled to meet the demand of water level in landfills when the drainage system works well
在填埋場排水良好的情況下,為滿足填埋場水頭限制的要求,需控制滲濾液的回灌水量;而當填埋場排水不暢時,則不宜採用回灌方法處理滲濾液。Based on the data getting from field experiment in 2004, the sas software is used to analyses the growth of plants and root, yield and its composition, water consumption and water use efficiency under different quantity of irrigation water and irrigation time in prophase
摘要依據2004年試驗資料,採用sas統計分析軟體,研究了在不同灌水量、灌水時間處理下,春小麥生長前期生長狀況、干物質積累、最終產量及其組成、春小麥田的耗水量和水分利用率。Based on the experiment studies, the study on water and solute transport in sandy soil under reclaimed water irrigation was made, the result can give some reference for the effect on soil solute transport and soil environment under micro - contaminated water irrigation
摘要以寧夏回族自治區大武口市森林公園的含礫砂土為研究對象,通過室內試驗,對中水灌溉條件下砂礫質土壤在不同灌水量、多次連續灌水、降雨淋洗等不同來水條件下水分、污染物運移的規律進行了初步的研究,為微污染水用於綠化灌溉對砂礫質土壤中污染物運移及累積的研究提供科學依據。Effects of irrigation quota and period on yield and water use efficiency of wheat
灌水量和灌水時期對小麥產量和水分利用率的影響But, when the total water quantity is reduced 30 % of present average amount in the 2010, the total salinity of groundwater will have significant increase in the different period ( pre - summer irrigation, post - summer irrigation, pre - autumn irrigation and pre - freezing up of soil four periods ). the water quality will be likely to deteriorate ; in addition, the prediction models of soil moisture and saline concentration are established
通過試區土壤水分、鹽分的bp與rbf模型的模擬與檢驗,預測了2005年、 2010年夏灌前、夏灌后、秋澆前與封凍前的土壤水鹽狀況,得出上壤水分隨著灌水量的減少呈下降趨勢,而土壤鹽分在淺層與中層呈現出不同的結果: oaThe nh4 + - n accumulated in the upper layer of soil when the irrigation water was low ; and at the high irrigation rate, this accumulation was decreased
灌水量低時,滴灌施肥銨態氮在土壤上層明顯累積;灌水量增加后,這種累積作用減弱。Water and fertilizer influenced the ecophysiological characteristics of achnatherum splendens leaf markedly which raised with the increase of water and fertilizer. 7
水分和肥料對友友草光合生理生態特性的影響差異顯著,光合速率隨灌水量、施肥量的增加而增加。In field study, the expenment on nitrogen transport and transformation in soils with different irrigation ( with both ground water and sewage effluent ) and fertilization levels has been conducted. with considenng the n - uptake, nitrification and demtrification processes, a model for describing no2 - - n transport and transformation in unsaturated soil has been applied. results show that, the n03 + - n accumulating in soil is contributed more by fertilization but lees by irrigation with sewage effluent, and the model can be used to simulate no3 - - n transport in soils
在室外進行了不同清污水灌水量與施肥條件下氮素遷移轉化試驗,同時進行了考慮根系吸收,硝化和反硝化的田間非飽和no _ 3 ~ - ? n遷移轉化模型的數值模擬,研究結果表明與施肥相比,污水灌溉對土壤中no _ 3 ~ - ? n累積的貢獻較小,所建立模型可用於模擬no _ 3 ~ - ? n在土壤中的遷移。This article is focused on the effect of field measures on the price and quality of drip irrigation system and exactly determining the quantity of irrigation water
本文著重研究的滴灌系統的田間工程對滴灌系統的造價和灌水均勻度的影響,以及精確測定灌水量的簡便途徑。By the experiments, some main factors influenced watering effect were analyzed. the results show that watering volume, initial soil water content, and width of water ditch influenced the watering effect differently
對影響灌水效果的幾個主要因素進行了分析,實驗表明,灌水量、土壤初始含水率、灌水溝寬度對灌水效果都有不同程度的影響。分享友人