1) sewage irrigation duration
污灌年限
3) different length of irrigation
不同滴灌年限
1.
different soil texture,different postemergences,from horizontal direction,from vertical direction and the relationship between the total salt content and cotton yield to analyse the salt transfer law for cotton field in Mosuowan reclamation area at the condition of different length of irrigation and different water quality.
为分析莫索湾垦区不同滴灌年限及不同水质灌溉棉田膜下滴灌盐分的运移规律,从不同土壤质地、不同生育时期、水平方向不同土层、垂直方向不同土层、总盐含量与产量间关系等5个方面对膜下滴灌盐分的运移进行了分析比对,初步得出:黏土中的盐分积累最重,壤土中次之,砂土积累最少;随着生育时期的推后,各土层含盐量都有不同程度的加大;水平方向露地行中央土层盐分积累最多,滴头处盐分积累最少;垂直方向盐分的积累在0—60cm土层逐渐增加,60—100cm土层盐分积累受膜下滴灌影响较小;总盐含量越高产量下降越严重;总体来说,井水灌处理要比河水灌各处理积盐多。
4) wastewater irrigation
污灌
1.
Through the analysis on the soil heavy metals pollution by wastewater irrigation of vegetable plots in kuitun city, results show that content of Pb, Zn,Cr, Cd, Hg don't exceed the standard except Cu in part of soil.
通过对奎屯市北郊污灌区菜地土壤中重金属含量的分析表明,所调查的污灌菜地土壤中铅、锌、镉、砷和汞均未超标,部分地块铜超标,说明多年来因工业废水的浇灌,已造成铜对局部区域土壤的污染。
2.
Ten surface soil samples were collected from each of the three blocks of agricultural soil with or without wastewater irrigation.
在天津 3处典型污灌与非污灌农田各采集了 10个表土样品 ,测定了其中α -HCH、β -HCH、γ -HCH、δ -HCH、p ,p’ -DDE、p ,p’ -DDD、p ,p’ -DDT和o ,p’ -DDT等 8种有机氯农药含量 ,籍以研究该地区有机氯农药在地块中的局部分异。
3.
The procedure of sample preparation for residual analysis of organochlorinated pesticides in a paddy soil contaminated by long-term wastewater irrigation was investigated.
研究了不同样品净化方法和方法组合在长年污灌的水稻土有机氯农药残留分析中的效果 。
5) Sewage irrigation
污灌
1.
Effect of sewage irrigation on the growth and scavenging system of activated oxygen of crop;
污灌对作物生长及其活性氧清除系统的影响
2.
Spatial variabilities of heavy metals and salt contents in soils of Taiyuan sewage irrigation region;
太原污灌区土壤重金属和盐分含量的空间变异特征
3.
A preliminary study of soil permeability characteristics under sewage irrigation;
污灌条件下土壤水渗透特征初探
6) fixed number of years
年限
1.
By using the new "Flow State Scale",this study launches an investigation among the people practicing body-building in the clubs,and divides them into several groups for their differences on the aspects of training Items,fixed number of years,frequency and gender.
研究采用重新编译过的《流畅状态量表》对在健身俱乐部锻炼的人群分锻炼项目、年限、频率及性别不同作了调查。
补充资料:年限
1.规定的或作为一般标准的年数。
说明:补充资料仅用于学习参考,请勿用于其它任何用途。
参考词条