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Field irrigation experiment of different salt concentration is conducted for wheat,maize and sunflower with normal quota and leaching quota in this paper,and study on crop growth,accumulation law of dry matter above ground and crop yield of 3 crops.

在田间试验条件下,采用正常灌溉定额和淋洗灌溉定额2种灌溉水平,对小麦、玉米、葵花3种作物进行了不同灌溉水矿化度处理的灌溉试验,对3种作物的生长过程、地上部干物质积累规律、作物产量等进行了研究。

The results showed that the "intermit irrigation" is an ideal irrigation technique.

文摘:对低洼地种稻增产灌溉技术进行了3种对比试验研究,结果表明"间歇灌溉"是理想的灌溉技术,同时指出了应用间歇灌溉技术时应注意的问题。

It indicates that emphasis should be put on the following subjects in the future: the determination of field infiltration coefficient and roughness coefficient;the optimal combination of field standard and irrigation technical index ,and the rational ground levelness degree and mode.

对近10多年来地面灌溉水流运动数值模拟方面的国内外研究进展进行了归类整理,并就目前研究中存在的不足和未来急待深入研究的问题进行了探讨,认为在今后的研究中应把地面灌溉入渗参数和糙率的确定问题,不同地区和作物条件下合理的田块尺寸与灌水要素的优化组合研究及经济合理的田间土地平整度及平地模式的研究,长畦分段灌、阶式水平畦灌、覆膜灌溉条件下的水流运动和合理灌水技术指标的研究,浑水灌溉和土壤气阻对地面灌溉水流运动的影响机理研究等作为重点内容。

A new type of light weight and small size machine with sprinkling irrigation and hose irrigation was introduced. The machine's set of remotion and pressure water are provided by a capstan car, and sprinkling irrigation by a sprinkler car.

介绍了一种新型喷灌和软管灌溉两用轻小机组的结构和工作原理,该新型灌溉机组由绞盘车提供行走动力和压力水源,通过喷水车进行喷洒灌溉。

objectiveto provide the scientific foundation for the construction of gap cultivation bases of abrus mollis hance by evaluating the pollution status of soil and irrigation water in abrus mollis hance cultivation base.methodsthe environment quality was appraised by the nemerow pollution index method.resultsthe quality of soil and irrigation water was good, falling in the categories of "clean".conclusionthe quality of soil and irrigation water in abrus mollis hance cultivation base accords with the requirement of gap of chinese medicinal materials.

目的对鸡骨草种植基地土壤、灌溉水污染现状进行评价,旨在为鸡骨草规范化种植基地建设提供科学依据。方法土壤及灌溉水污染现状运用单项污染指数法和内梅罗综合污染指数法进行评价。结果种植基地土壤和灌溉水污染等级均属于&清洁&一级。结论鸡骨草种植基地的土壤和灌溉水质量完全符合《中药材生产质量管理规范》的相关要求。

Starting with the elevation of underground water resources and a safe level of mining through variable system theory, this paper analyzes the conditions of underground water resources based on the well-studied determination method of determining the two hydrographical coefficients: rainfall infiltration replenishment rate and irrigation replenishment rate. Then considering irrigation, rainfall, drainage and other related factors, a mathematical model is set up for the calculation of underground water storage,exploitation on water regulation. After analyzing the adaptability of molepipe drainage, an underground water table regulation is given out.

论文从灌区的地下水资源及其可开采量评价分析方面入手,在对两个主要的水文地质参数即降雨入渗补给系数、灌溉入渗补给系数确定方法研究的基础上,对灌区的地下水资源状况进行分析,依据灌区的灌溉、降雨、排水条件及各种现状因素,建立了地下水资源量计算的数学模型,西安理工大学工程硕士专业学位论文计算得到青铜峡灌区地下水的最大补给量和可开采量;另外对在开发利用地下水资源过程中的地下水位的调控进行了初步的探讨,在银北灌区开展对暗管排水调控地下水位的试验研究。

Based on the experimental data from Guilin Irrigation Experiment Station in Guangxi Autonomous Region,the relation of rainfall utilization and surface runoff in paddy fields under different rainfall frequency and different irrigation regimes is studied;i.e.combining shallow water depth with wetting and drying,intermitted submerged irrigation and traditional flooding irrigation.

以广西桂林试验中心站多年实测降雨资料为依据,研究不同降雨频率下稻田降雨利用率及水稻不同生育阶段的径流关系,以期为减少农业面污染的水肥管理提供理论依据和实践指导。1材料与方法桂林试验站多年来采用传统灌溉、间歇灌溉和&薄、浅、湿、晒&灌溉方式进行早稻和晚稻田间试验。

With assistance from predecesors and collegues,we tried our best to make several kinds of research and suggested a new thinking mode on the method of dryland ir rigation in Guizhou karst mountain ares.

贵州借助前人、同仁和本课题研究工作,对旱地灌溉方式问题进行几种不同的研究,向社会公诸一个解决贵州岩溶山区旱地灌溉的一种新思维方式,并提供旱地灌溉的一种最佳模式。

The estimation of evapotranspiration from vegetated surfaces is a basic tool to compute water balances and to estimate water availability and requirements.

参考作物蒸发蒸腾量(ET0)是计算作物需水量和进行灌溉预报的基础要素。

Furrow irrigation is used with row crops by running water in the cultivated between the rows.

沟灌用于行播作物,水在作物行间的小沟里流动,进行灌溉

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