您要查找的是不是:
- reference crops water demand 参考作物需水量
- Relation between consult crops water demand and meteorological phenomena in Fushun region 抚顺地区参考作物需水量与气象因素的关系
- crop water demand 作物需水量
- crop water demand information 作物需水信息
- The efficient precipitation,the water demand and the deficiencies of main crops in different typical years and in different growth period in Baoding plain have been studied in detail. 得出了保定市农业用水量从90年代中后期大幅度增加而有效降雨量的明显减小,是造成保定市水资源供需矛盾突出的主要原因之一。
- Modified Penman and Penman Monteith formulae were recommended to calculate the reference crop evapotranspiration by FAO one after another. FAO先后建议用Penman修正式和Penman Monteith公式计算参考作物蒸散量 .
- Primary investigation on the relationship between the crop water stress index and the soil moisture. 作物水分胁迫指数与土壤含水量关系探讨。
- Crop water production function under dynamic optimal management of fertilizer supply. 养分优化管理条件下作物水分生产函数。
- Reference crop evapotranspiration(ET_0) estimates on the basis of FAO recommended methodology require some meteorological data; however another approach,i. e. 根据联合国粮农组织推荐的方法估算参考作物蒸发蒸腾量(ET0)需要具备一定的气象资料,而使用另一种方法,即蒸发计估测ET0,可以减少基于作物蒸发蒸腾量制定灌溉制度的工作量,并且降低其复杂度。
- Established the correlativity between reference crop evaporation (ETo) and daily average temperature (T), sunlight hour(N1), wind speed(W), relative humidity(RH). 建立参考作物腾发量与日平均气温(T),日照时数(N1),风速(W),相对湿度(RH)的多元线性回归模型;
- The relation between crop water use efficiency and crop productivity potential,crop yield were investigated. 研究了作物水分利用效率与作物生产潜力、产量的关系。
- The reference crop evapotranspiration in Hunpu irrigation district,Liaoning province was calculated with the equation of Penman-Monteith recommended by FAO. 采用联合国粮农组织最新推荐的Penman-Monteith公式,分析了浑蒲灌区参考作物需水量。
- Study on Theory and Method of Ecological Water Demand in the Lower Reaches of Heihe River. 黑河流域下游生态需水理论与方法研究。
- Tennant method is one of the method widely used on water demand of ecological environment. 田纳特法是目前广泛应用的生态环境需水量确定方法之一。
- However, the reflectance of middle--IR and the emission of heat--IR tendto be inversely correlated with crop water content. 而对中红外的反射与热红外的发射则与作物含水情况呈反相关的趋势。
- On the premise of protecting river hydrobiology habitat,ecological water demand in mountainous rivers was studied. 主要从保护河流水生生物栖息地出发,探讨山区河流生态需水量问题。
- The analysis of the variation in source of crop water requirement was conducted based on the climate division by annual aridity index. 在根据年干燥度进行干湿区划的基础上,对作物生态需水来源进行分析。
- Duo to crops' physiological mechanism and the unsteady,non-linear stochastic variation of meteorological factors,reference crop evapotranspiration time series is characterized by its periodicity. 受作物本身生理机制以及近地层气象因子非线性、非平稳化随机变化的影响,参考作物潜在腾发量时序过程具有周期特性。
- An integrated classification system for ecological water demand is suggested according to different criterions. 建立了不同标准下的生态需水分类体系;
- The crop yield estimation model based on crop water production function and CWSI was educed by linking CWSI and crop water production function. 将作物水分胁迫指数(CWSI)与作物水分生产函数相结合,得到了用CWSI表示的作物水分生产函数,进而推导出基于作物水分生产函数和CWSI的作物产量估算模式。