leaching of nitrate 中文意思是什麼
leaching of nitrate
解釋
硝酸鹽的淋溶-
Management of n in agricultural ecosystem is one of the most essential factors for agricultural sustainability. injudicious use of nitrogen fertilizer has induced a crucial environmental problem, which includes volatilization of nox to the atmosphere, acid rain, induced leaching of soil nutrients, changes in the global n cycle, and nitrate pollution of groundwater
農田生態系統中長期單一、過量偏施化學肥料特別是化學氮肥，造成農產品品質下降，肥料利用率低，不僅增加了農業生產成本，還嚴重污染環境，已成為農業可持續發展的一個重要制約因子。 -
Optimization of and modeling of concentration distribution of the solution obtained by leaching of natural sodium nitrate ores in the sunning process
多級鹽田灘曬硝酸鈉礦浸取液時濃度分佈模型及優化 -
White r e. prediction of nitrate leaching from a structured clay soil using transfer functions derived from externally applied or indigenous solute fluxes [ j ]. hydrol., 1989, 107 : 31 - 42
任理，袁福生，張福鎖.冬小麥生長條件下土壤硝態氮淋洗的傳遞函數模擬和預報[ j ] .生態學報（印刷中） -
Study on reduction of nitrate from in - situ acid uranium leaching groundwater with iron particles
鐵屑去除酸法地浸采鈾地下水中硝酸鹽的試驗研究 -
It is apparent that a high degree of ammonia volatilization and / or nitrate leaching can occur in cropping systems susceptible to previously described conditions
很明顯，高的氨揮發和（或）硝態氮的淋失會發生在符合上述條件的任何種植制度中。 -
Nitrate leaching, although slightly higher under no tillage, is generally not a major pathway of loss in summer crops
實施免耕的初期，氮的生物固定明顯，但隨著時間的推延，這種作用逐漸消失，以至到了後期，與初期的情況正好相反。 -
Nitrate content of rape and coriander increased with higher nitrogenous fertilizer application and lower water supply. nitrogen leaching in the soil increased with higher nitrogenous fertilizer application and water supply in column and micro - plot experiments, especially on higher irrigation and higher nitrogenous fertilizer. there was little nitrogen leaching when n application was below 135 kg / hm2, but n use at a rate of 270 kg / hm2 increased nitrogen leaching in the soil
在一定的施氮量下，硝態氮的積累峰值隨著灌水量的增加而下移， 150mm灌水量下田區試驗和模擬土柱試驗0 100cm土體內硝態氮的積累峰值分別出現在0 30cm和50 70cm ； 250mm灌水量下分別出現在40 60cm和60 80cm ； 350mm灌水量下田區試驗中0 100cm土體硝態氮沒有出現峰值，而模擬土柱試驗在80 100cm則有明顯的積累。 -
It is a serious issue that water and nitrogen input rates are unreasonable high in vegetable production in china, which may increase nitrate accumulation in vegetable and ground water contamination. in result, these will be harmful to people ' s health. the objectives of this paper which based on column % pot and micro - plot experiments were to compare the effects of different water and nitrogen supply strategies on nitrogen leaching in the soil profile and nitrate accumulation in vegetable as a base for the n and water recommendations in vegetable production
針對蔬菜生產中水氮投入過量造成蔬菜品質下降、地下水硝酸鹽含量超標，水、肥資源的浪費以及給人體健康造成的潛在性威脅的實際情況，以油菜和芫荽為研究對象採用模擬土柱、盆栽和田間微區試驗相結合方法系統監測了蔬菜生育期內硝酸鹽含量的動態變化以及收獲后不同土層土壤硝態氮的殘留量，研究了水氮對蔬菜硝酸鹽累積的影響及對土壤硝態氮殘留的效應。 -
A preliminary study was carried out on the method of acquiring parameters for soil dual - porosity model and the analysis for the simulation of soil nitrate leaching by dual - porosity model. the feasibility and experimental conditions of soil particle size analyzing by the laser particle - size analysis was discussed, based on the comparison results of nine soil samples by the laser particle - size analysis and traditional pipette and sieve analysis
本文初步探討了土壤兩域模型的參數獲取方法及兩域模型應用於土壤硝酸鹽淋洗的模擬分析，為進一步研究優先流以及分形理論在土壤溶質（包括養分）運移研究中的應用打下基礎，以更準確地模擬和預測農田土壤硝酸鹽的淋洗，為農田水肥優化措施提供依據。
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