Phosphorus leaching losses in different planting farmlands in the riverine plain area of Taihu Lake
太湖水网地区不同种植类型农田磷素渗漏流失研究
65 kg·hm~(-2) respectively, and (NO~-_3-N) was the main form of nitrogen leaching losses from dry farming fields.
通过测坑和大田小区试验,研究了上海郊区旱作农田氮素降雨径流和降雨渗漏流失的特征、相关因素和流失负荷。
There was a significant positive relationship between NO3——N content in soil layers and N content in leaching water,which indicated that N accumulation in soil must cause N leaching loss and the more NO3——N accumulated in soil,the more N leached from the farmlands.
为了探索太湖流域水网地区不同种植类型农田土壤中氮素累积量与渗漏水中氮素含量之间的关系,在浙江省嘉兴市选择10个农田点位埋设渗漏计和地下水采集管,采集水、土样品,研究了菜地、果园和水田3种典型种植类型农田氮素渗漏流失情况。
The characters of N-element leakage and countermeasures in rice fields in Shanghai suburb;
上海郊区水稻田氮素渗漏流失特性及控制对策
Through the leaching-pond experiment,the rule of leakage-loss of nitrogen and controlling countermeasures in rice fields in the upstream area of HuangPu River watershed were studied.
通过测坑定位试验,对上海市黄浦江上游水稻田氮素渗漏流失规律及其控制对策进行了研究,得到如下结论:(1)稻田氮素渗漏流失以NO3--N为主,施肥后1~2 d渗漏水中NH4+-N浓度较高,之后一般为0。
Based on the testing hole experimentation, this paper studied on the transformation process, leakage loss of nitrogen in the rice field water.
通过测坑试验,研究了稻田水中氮素的变化动态、渗漏流失规律。
Based on the testing-hole experimentation, this paper studied on the transformation process, leakage loss of the rice field water nitrogen in Shanghai.
结果表明,施肥后田水中氮素的浓度有逐日递减的趋势,但各种形态氮素的变化趋势有所不同,铵氮在第二天就减少了75％;不同施肥期氮素的渗漏流失量以基肥期为最大;在前茬为草莓的情况下以NO3--N渗漏流失为主;NO3--N作为氮素在土壤中淋失移动的主要形态将成为施用氮肥造成地下水污染的重要来源;降雨量越大,引起的氮素径流流失量就越大,施用有机肥可减少氮素对水环境的污染。
N and P Losses with Leaching from a Intensive Cultivated Soil in Dianchi Lake Catchments
滇池流域农田土壤氮磷的渗漏流失特征
Phosphorus Move by Leaching and Its Mechanism from Paddy Soil in the Taihu Lake Region of South China;
太湖地区典型水稻土磷素渗漏流失及其机理
Phosphorus leaching losses in different planting farmlands in the riverine plain area of Taihu Lake
太湖水网地区不同种植类型农田磷素渗漏流失研究
Study on nitrogen leaching in farmlands with different crops in riverine plain area of Taihu Lake
太湖水网地区不同种植类型农田氮素渗漏流失研究
Study on nitrogen and phosphorus leaching at different fertilizer levels in Phyllostachys praecox stands
不同施肥处理对雷竹林土壤氮、磷渗漏流失的影响
Simulating Soil Water Drainage and Nitrogen Leaching in Tianranwenyanqu Basin
天然文岩渠流域土壤水分渗漏和氮素淋失模拟
Sites for depositing deadly toxic soluble slag, tailings, etc. shall be made waterproof and protected against seepage and leaking.
存放可溶性剧毒废渣的场所，必须采取防水、防渗漏、防流失的措施。
"Loss of Brake fluid. Brake fluid can be lost if the master cylinder leaks, if the wheel cylinder leaks, if the line connections are loose, or if the line is damaged."
制动液流失:如果制动总泵和分泵渗漏,连接管松动或破损,均会使制动液流失。
Experiment of Steady Two-Dimensional Infiltration Rate of the Soil in the Canal Bed and the Calculation of Seepage Losses
渠床土壤二维稳定入渗率实验及渗漏损失计算
An amount lost as the result of leaking.
由渗漏而导致的损失总量
To issue from confinement or an enclosure; leak or seep out
"从限制和环绕中流出来,渗漏或泄露."
Experimental Study and Numerical Simulation of Seepage from a Seasonal River;
季节性河流河道渗漏试验与模拟研究
Large crack leak stoppage in hydropower station,Chongqing
重庆某电站较大渗流量裂缝堵漏处理
How to recognize the dam seepage and seepage failure type and calculate seepage of dam is very importance.
如何认识堤坝渗漏机理、渗透破坏类型和渗流计算具有很大的意义。
Application of DNDC model in estimating cropland nitrate leaching
DNDC模型在农田氮素渗漏淋失估算中的应用
Research on the Loss of Nitrogen in Direct-seeding Rice Field in Taihu Lake Region
太湖地区直播稻田氮素的渗漏损失研究
Loss of electric current as a result of faulty insulation.
漏电由于绝缘不好而导致的电流流失
No damage and fluid fluid leakage from engine pylon and cowling doors.
发动机吊架和整流罩无液压油渗漏和损伤。