灌溉水水量,Irrigation water quantity
1)Irrigation water quantity灌溉水水量
2)water irrigation measurement灌溉量水
3)irrigation water volume灌溉水量
1.The experience equation has been proposed to appraise the soil infiltration body size withirrigation water volume.通过试验,分析研究了不同灌溉水量对无压灌溉入渗过程中水分运移的影响。
4)irrigation water requirement灌溉需水量
英文短句/例句
1.Agricultural Irrigation Water Requirement and Its Regional Characteristic in China;全国农业灌溉需水量及区域特性研究
puting and Study on Irrigation Requirement in Field of Bojili Irrigation District;簸箕李灌区田间灌溉需水量计算与研究
3.Spatial distribution characteristics of irrigation water requirement for main crops in China中国主要作物灌溉需水量空间分布特征
4.Impacts of climate change on irrigation water requirements of rice:a case study of Gaoyou Irrigation Area,Jiangsu气候变化对水稻灌溉需水量的影响——以高邮灌区为例
5.Irrigation water requirement by winter wheat in Huanghuai Plain: Affecting facto rs and characteristics in different climatic years.黄淮平原冬小麦灌溉需水量的影响因素与不同年型特征
6.Study on Water Demand and Irrigation Scheduling for Drip-irrigated Muskmelon under Mulch Film in Greenhouse温室膜下滴灌甜瓜需水量及灌溉制度的研究
7.And it requires huge amounts of money to make use of it for drinking and irrigation.要将海水加工为饮用或灌溉水需要大量的资金。
8.Water Requirement Prediction of Artificial Pasture and Optimizing of Its Irrigation Schedule in Northwestern China;西北牧区人工牧草需水量预报及灌溉制度优化
9.Theory and Technology of Plant-Based Precision Irrigation in Orchard基于果树需水信号的精量灌溉控制理论与技术
10.Rice Water Requirement Forecast Based on BP Artificial Neural Networks and Irrigation Programming;基于BP人工神经网络的水稻需水量预测及灌区灌溉制度研究
11.Analysis on Water Use Demand for Irrigation and the Development of Water-Saving Irrigation;灌溉用水需求分析与节水灌溉发展研究
12.Research of Soybean Water Requirement and Schedule with Drip Irrigation;滴灌大豆需水规律及灌溉制度的研究
13.Research on the Relationship between Irrigation Water Price and Irrigation Water in Drought Oases干旱绿洲区灌溉水价与灌溉用水量关系研究
14.Study on Water-saving Mechanism and Calculating Methods of Crop Water Requirement in Controlled Alternative Furrow Irrigation;控制性交替隔沟灌溉的节水机理与作物需水量估算方法研究
15.Study on Water-saving Irrigation and Water Requirement of Zizyphus Mauritiana Lam. in Dry-hot River Valley;金沙江干热河谷节水灌溉及台湾青枣需水量研究
16.The threat of erosion also is reduced because no water flows on the surface and because tomatoes are given only the amount of water they need.因为灌溉水不流经地表,又因灌水量与番茄的需水量相符,所以土壤流失的危险随之减少。
17.Calculation of Water Requirement for Summer Corn under Controlled Alternative Furrow Irrigation;控制性交替隔沟灌溉条件下夏玉米需水量的计算
paring Different Methods of Calculating Crop Water Requirement & Study on Limited Irrigation Forecasting;作物需水量计算方法比较与非充分灌溉预报研究
相关短句/例句
water irrigation measurement灌溉量水
3)irrigation water volume灌溉水量
1.The experience equation has been proposed to appraise the soil infiltration body size withirrigation water volume.通过试验,分析研究了不同灌溉水量对无压灌溉入渗过程中水分运移的影响。
4)irrigation water requirement灌溉需水量
5)irrigation water use灌溉用水量
1.The forecasting ofirrigation water use is influenced by many factors and it belongs to the gray system.灌溉用水量的预测影响因素很多,属于灰色系统问题。
2.This paper used Elman neural network to establish the model ofirrigation water use prediction,having four importing units and exporting units.灌溉用水量的预测对灌区的灌溉管理起着重要的作用。
3.The forecast ofirrigation water use has important guiding role to the management of irrigation.灌溉用水量的预测对于灌区管理工作具有重要的指导意义,使用神经网络方法预测灌溉用水量。
6)irrigation water requirement灌溉用水量
1.Chaos theory is used to analyze the evolvement trend ofirrigation water requirement.运用混沌理论分析灌溉用水量的演变趋势,通过灌溉用水量序列相空间重构在高维空间中恢复演变规律,考虑时间延迟与嵌入维数的相关性,利用C-C法计算相空间重构参数,通过最大Lyapunov指数来判别系统混沌特性。
延伸阅读
成水灌溉成水灌溉saline water irrigation咸水灌溉(saline water利用含盐量大于2克/升的水进行的灌溉在干旱半干旱地区,有条件地合理利用咸水抗早灌溉,能获得一定增产效果。咸水灌溉在突尼斯、阿尔及利亚、摩洛哥、印度、巴基斯坦、意大利、美国、德国、瑞典以及苏联等国家都有不少成功经验。中国宁夏、甘肃、内蒙古、陕西及河南、河北等省(区)同样有利用咸水灌溉的丰富经验。如河南省虞城县经过连续5年试验,证明用3.1一3.5克/升的咸水灌溉粮食作物,可增产24.7%,用4.2一4.8克/升的咸水灌溉棉花,可增产25.3%。河北省黑龙港地区利用2一5克/升咸水抗早浇麦,一般都增产20一30%以上,利用咸水抗旱夏播和灌溉棉花也都取得一定成效。咸水的含盐量和含盐组成不同,对作物生长的影响也不同。碱性盐的危害大于中性盐,而中性盐中氯化物盐的危害又大于硫酸盐。咸水灌溉有它的两重性,在它供给作物以必需的水分起到抗旱增产作用的同时,又给农田及作物带了盐分,一旦利用不当就会使作物生长受抑制和使土壤发生盐碱危害。因此,利用咸水灌溉更应该正确地处理水、土、作物间的相互关系,并配合必要的农业技术措施,使土壤获增加水分之利,避积累盐分之弊,更好地发挥抗旱增产的作用。河北、山东部分地区利用咸水灌溉的具体做法主要是:①严格掌握水质标准。一般pH值为7.0一8.0的中性或弱碱性。阳离子中钠不超过60%,以硫酸盐或氯化物盐为主,矿化度小于5克/升的咸水可以用于抗早灌溉。②灌水时间应晚,灌水次数宜少,灌水量要因地制宜。在作物耐盐能力增强,根系下扎的生长中后期进行咸水灌溉为宜。在非盐碱和轻盐碱地上,可在作物需水关键时期灌水1一2次至多不超过3次,灌水量每次40一60米“/亩。中度或重度盐碱地,可加大每次灌水量进行压盐灌溉。③咸水与碱性水混灌或轮灌。浅层地下中性盐类的咸水与深层地下苏打碱性水混合灌概,不但能增辟水源,且能改善水质,减少了土壤次生盐碱化的可能性,也提高了咸水灌溉的安全性。④要有排水条件,使一年周期内土壤不积盐或呈脱盐状态,这是可以利用咸水灌溉的先决条件。⑤要有农业措施密切配合。一要地平;二要地肥,在咸水灌溉中增施有机肥和磷肥,有显著的增产及抑盐作用;三要灌后及时锄地,以减少水分蒸发,防止土壤强烈返盐。⑥选种耐盐作物。⑦出现土壤盐分累积时,应种植绿肥或休闲养地,必要时可以利用秋冬季节进行淡水压盐或人工冲洗。(毛建华)