Returning farmland to forest is the principal policy presently for improving eco-environment and controlling soil and water losses in the loess hilly-gully region. 退耕还林是目前黄土丘陵区整治生态环境和控制水土流失的主体政策。
Effects of Straw Returning and Wheat Cultivars on Soil Water and Salt Movement and Wheat Yield 秸秆还田和品种对土壤水盐运移及小麦产量的影响
On the other hand, returning land for farming to forestry is essential to guarantee the final success in conserving water and soil. 另一方面,实行退耕还林对于取得水土保持的最终胜利具有重要意义。
Effects of Straw Returning for Successive Years on Yields of Rice and Rape under Different Water Condition 不同水分条件下连续多年秸秆还田对水稻、油菜产量的影响
Migrant workers returning to the countryside should be trained to save water in agriculture and water pollution must be controlled, adds Li. 李还说,应该培训返乡的农民工节约农业用水,而且水污染必须得到控制。
Returning to the river, a method of using their water which has been much discussed is the estuarine barrage. 再回到河水的问题上来。经过多次讨论,利用河水的方法是建造河口拦河坝。
With a flick of its tail, the animal caught away the daughter of a foolish snack vendor, returning into the water before the eyes of her horrified family. 只需轻轻地将尾巴一摇,这头怪物就轻松捋走了笨笨的快餐店老板的女儿,没等这惊恐万分的一家子回过神来,那怪物又潜到了水里。
Returning farmland to forest or grass land namely step by step to stop cultivate of the farmland which easy work water and soil loss and ground translate to sand. 退耕还林还草就是将容易造成水土流失的坡耕地和容易造成沙化的耕地,逐步停止耕作,植树种草,恢复植被。
Study on returning of desilting highland to cropland in Yellow River water diversion irrigation area and reasonable soil structures for silt covering 引黄灌区沉沙高地还耕模式及覆淤土层研究
Returning farmland to forest or grassland is the key to control soil and water loss and prevent soil degeneration, and from test to application the project have had conducted several decades in the loess plateau. 退耕还林还草是控制水土流失和防治土壤退化的关键措施,黄土高原退耕还林还草从试验到推广已有几十年历史。
Thinking for Returning the Grain Plots to Forestry and Grass in Soil and Water Loess Areas on Loess Plateau 黄土高原水土流失区退耕还林(草)的基本思路
The soil characteristics of different land where returning farmland to forests, grass land and farmland were contrasted and researched, including soil bulk density, soil porosity, soil water stable aggregate structure and soil saturated hydraulic conductivity in Datong county of Qinghai province. 对比研究了青海省大通县不同类型退耕还林地、草地、农田的土壤性质,包括土壤容重、土壤孔隙度、土壤水稳性团粒结构、土壤饱和导水率。
A Discussion on the Data Utilization of Returning to Water Level 试论恢复水位资料的利用
The obligations of the two water rights are to manage the discharging water ( floods etc,) and prevent and treat the returning water ( polluted water and wastewater) respectively. 两种水权承担的义务分别是治理弃水(洪水等)、防治退水(废污水等)。
Design of Multistage U Tubes For Returning System of Sealing Water for Feedwater Pump 给水泵密封水回水系统多级U型管设计
Effect of Autumn Fertilization Combined With Returning Stalks to Field on Corn Yield and Water Use Efficiency in Arid Farming Areas 旱农区秸秆还田秋施肥对春玉米产量及水分利用效率的影响
A Study on the Returning Flow of Third Party in Water Right Trade 水权交易中第三方回流问题研究
On the one hand, returning farmland into forest and grass project to control water and soil loss has entirely started in the background of three years experimental projects. 一方面旨在治理水土流失的退耕还林还草生态重建工程在三年试点工程的基础上已全面启动;
The anti leakage measure for pit of the yard, returning water design of the pump station of floating ships for the first period and related circumstances are discussed in detail. 详细论述了堆场矿坑防渗措施,一期浮船泵站回水设计及相关情况。
Pollution Management of Dianchi Lake Requires the Returning of Arable Land to the Water 滇池治污要退耕还湖
This paper had a primary discussion on the ecological and economic benefits of Returning Farmland to Forest Demonstration Area in Karst Gorge in Guizhou, in respect of water conservation, soil-fixation and fertility preservation, carbon sequestration and oxygen production, and the productivity of the economic-ecological forests. 从坡耕地退耕还林后的水源涵养、固土保肥、纳碳制氧、生态经济林产值等4方面入手,对花江喀斯特退耕还林示范区生态经济效益进行了初步评价。
Scaling characteristic of returning pipe for ash water recirculation system of power plant 火电厂灰水再循环系统的回水管结垢特性
The results indicated that returning organic material to soil can increase soil porosity, reduce soil bulk density, improve soil perviousness and soil retention of water and fertilizer, raise soil buffer capacity, supply multi-nutrients, and increase crops yields. 结果表明,有机物料回归土壤能增加土壤孔隙度,降低容重,改善土壤通透性和保水保肥性能,提高土壤的缓冲性。同时提供多种有效养分,培肥土壤,并表现为增加作物产量。
The main mechanized dryland farming technologies which are put into effect in Hebei Province include such technologies as mechanized mulching planting, tillage preserving the moisture of the soil, mechanized returning application of straw and mechanized water saving irrigation. 分析了河北省旱作农业现状。根据全省旱地生态环境的不同,所实施的机械化旱作农业技术包括机械化覆盖种植技术、耕作蓄水保墒技术、机械化秸秆还田技术和机械化节水灌溉技术。
The Design and Arrange of the Returning Water Device of WNS Serial Gas& Oil-fired Hot Water Boiler WNS系列燃油(气)热水锅炉回水装置的设计及布置
The application result shows that the remaining fouling is no more than 2 mm thick for the two water returning pipe after cleaning, the pipe anti-corrosion coatings are integral and the flow of the water returning pips for the ash yard meets the anticipated requirements. 应用结果表明,清洗后2条回水管线残留垢厚不超过2mm,管线的防腐涂层完好,灰场回水管线流量达到了预期要求。
WUE of organic fertilizer were higher than WUE of straw returning. 2. Organic fertilizer has good water conservation function on the soil moisture. 施有机肥处理的水分利用效率高于秸秆还田处理的水分利用效率。2.有机培肥具有良好的蓄水保墒作用。
Compared with organic fertilizer treatments, straw returning treatments were better with processing water, increasing the quantity function. 相对于施加有机肥处理,秸秆还田处理的保水、增墒作用较好。
With the increasing of the temperature of stream returning to solar pond, the energy supplied by electric heater evaporator heat transfer area, fresh water production and fresh water production per unit collector decrease; and fresh water cost changes slightly firstly and then increases gradually. 随着流回太阳池的盐水温度增加,低温多效系统的蒸发器面积和系统需要的电辅加热量都变小;淡水产量和单位集热面积淡水产量降低;淡水成本开始变化不大,然后逐渐上升。