alkali lands造句
例句与造句
- Amelioration of water quality to fish culture in saline - alkali land
盐碱地养鱼的水质改良 - Rice field fish culture in soda saline - alkali land
苏打盐碱地稻田养鱼 - Furthermore , a preliminary system of irrigation on a . splendens in saline - alkali land was suggested
此外，初步提出了盐碱地芨芨草灌溉制度以供生产实际参考。 - In this paper irrigated area water salt balance and the trends change is studied , the cause of formation and the trendence of saline - alkali land is analysized ; the foundmental theory for the administration of saline - alkali land is provided
本课题通过研究灌区水盐平衡和动态变化，分析灌区盐碱地的成因及变化趋势，为盐碱地治理提供一定的理论基础，对解决灌区实际问题具有指导意义。 - In order to instruct the afforestation in daqing city and saline - alkali land park of the no . 7 oil production company , growth conditions of afforestation trees in 131 soil point with different soil soluble salt of 0 . 1 % ~ 0 . 3 % , 0 . 3 % ~ 0 . 5 % , 0 . 5 % ~ 0 . 7 % and > 0 . 7 % were investigated and analyzed based on chemical properties mensuration of the plan land soil in different surface layer and referred to different stalt - resistance upper limit of trees
摘要为更好地指导大庆市及采油七厂公园盐碱地的绿化，在规划地土壤表层化学性质测定的基础上，参照不同树木耐盐能力上限，分别对全盐量在0 . 1 % ~ 0 . 3 % 、 0 . 3 % ~ 0 . 5 % 、 0 . 5 % ~ 0 . 7 % 、 > 0 . 7 %的131个样点上绿化树种的生长状况进行了调查及分析，并进而给出了树种选择及绿化工作的建议。 - It's difficult to find alkali lands in a sentence. 用alkali lands造句挺难的
- Beginning with the analyse of present situation and cause of formation of saline - alkali land , the irrigated area overall water salt trends are analysed , and the irrigated area saline - alkali land and the groundwater level and distribution law of groundwater degree of mineralization are expounded , the trendence of irrigated area saline - alkali land is put forward . then water salt balance model is estanbished according to the relationship of irrigating and drainage . regarding the irrigated area as a balance area , by analysis of mineralization degree of water pumping from the yellow river and drained off water from irrigated area , the change of the draining off water ion is forcasted in water reducing condition
课题研究主要从盐碱地现状与成因及灌区总体水盐动态分析两方面入手，阐述了灌区盐碱地、地下水位、地下水矿化度的分布规律，分析了灌区盐碱地的成因及变化趋势；根据灌区灌溉、排水条件与以上各种因素的关系，建立了灌区水盐均衡模型；把灌区作为一个均衡区，通过对黄河来水矿化度、灌区排水矿化度的分析，预测了在灌溉引水、排水减少时排水离子量的变化；运用灌区水盐动态模型原理，对灌区现状( 1998 、 2000年)与规划水平年总体水盐平衡进行了计算；总结分析了灌区水盐动态变化趋势，计算并提出了排水控制标准。 - We summarize our results as follow : during the period of 1981 - 2000 , there was a great change of land use in the county . the area of arable land , forest and saline - alkali land increased ; water land and resident land changed a little ; the area of the grassland and wasteland decreased greatly
结果显示：在1981 2000年这二十年间，长岭县的土地利用变化总的趋势是：耕地、林地和盐碱地面积增加，水域、居工用地变化不大，未利用地部分已被利用，草地面积急剧减少，并伴随着日益加剧的沙化和盐碱化。
