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- Keywords contour hedgerow;non point pollution;semiarid region; 等高植物篱;面源污染;半干旱区;
- To calculate average perennial load of non point source pollution, a direct measurement method is developed. 本文提出一种适合中国国情的计算非点源污染永久荷载的直接方法。
- With the control of the urban point pollution in recent years in drainage area of Dianchi region,the agricult ural non -point pollution loom large. 为了研究和控制农田面源污染,掌握其污染释放规律,选择紧靠滇池的大渔乡大棚种植区作为研究样本,在2001年进行了旱季和雨季的连续监测。
- Agricultural non - point pollution 农业面源污染
- The method integrates GIS, RS with pollutant loading receptor response model for reservoir water, agricultural non point source pollution simulation model and linear programming model. 该方法运用遥感数据,并以地理信息系统软件为平台集成了水库营养盐负荷浓度响应关系模型、农业非点源污染模拟模型和线性规划模型。
- Methods: by means of electrical acupuncture on Yungch uan, Kunlun points and non points, the effect of different points on bone density of de ovaried rats was oberved. 方法:采用去卵巢大鼠模型,应用电针肾经涌泉穴、膀胱经昆仑穴和非经非穴等方法,观察不同穴位对去卵巢大鼠骨密度的影响。
- Along future controling the point pollution source, the non-point pollution source has become the most important source that polluted water-environment. 随着对点源污染的进一步控制,非点源污染已经成为水环境的重要污染源,甚至是首要污染源。
- Gradually the surrounding farmland turned residential. 周围的农田渐渐变成了住宅区。
- Keywords types of land use;surface water run off;the Lake Chaohu Basin;non point source pollution; 土地利用类型;地表径流;巢湖流域;非点源污染;
- agriculture non- point pollution 农业非点源污染
- Research Progress and Prospect of Agricultural Non - point Pollution Source Model 农业非点源污染模型研究进展及发展方向
- The once barren hillsides are now good farmland. 昔日荒坡，今日良田。
- This non sequitur invalidates his argument. 他不根据前提推理因而论证无效。
- At this point your logic is at fault. 在这一点上你的推理是错误的。
- In point of cost, we'll have to discuss it at the next meeting. 至于费用方面，我们只好留到下次会议再讨论。
- Making a petit point pillow is exacting work. 做一个小花边编织枕头是一项细致活儿。
- Patience is a sine qua non for a good teacher. 做个优秀教师必不可少的条件是要有耐心。
- The diplomat was declared persona non grata. 这位外交家被宣布为不受欢迎的使节。
- I mentioned this point by way of cautioning you. 我提出了这一点用以警告你。
- Thirty percent of the farmland has been planted to oil crops. 百分之三十的农田已种上油料作物。
