This paper presents a method of using BP artificial neural network to describe crop water model.
研究了利用BP神经网络描述作物-水模型的方法。
At present, usually parameters and systems have been optimized by least square techniques and dynamic programming in the research of crop water model and crop response to water and salt.
在作物水模型及作物水盐响应相关研究中，目前多采用最小二乘法进行参数寻优，动态规划法对系统进行优化。
The crop water stress index (CWSI) model for monitoring summer maize water stress in North China Plain (NCP) was set up in this paper.
探讨并建立了适合于中国华北地区夏玉米水分状况监测的作物水分胁迫指数(CWSI)模型。
ISAREG is an irrigation scheduling simulation model based on the concept of crop water requirements and soil water balance.
从作物需水量的基本概念出发，以水量平衡原理为基础，建立了模拟农田根层土壤水循环的计算机模型- IS AREG。
Soil's optimum water content for crop (sunflower) stages in different salty soil has been get by GA-ANN coupling model.
通过GA-ANN耦合模型的建立求解了不同含盐程度土壤中作物（油料向日葵）的适宜含水率。
The optimized model is applied to predict the crop water requirements of Shulehe irrigation area to provide guidance for crop irrigation in the irrigation area.
将优选出的模型应用于疏勒河灌区的作物需水量预测，为灌区作物灌溉提供指导。
Based on field experiment, the model of water transfer and consumption, crop water (-fertilizer)-production function of winter wheat and their application were studied.
在田间试验的基础上，对冬小麦农田水分消耗与转化、水分及水肥生产函数模型及其应用进行了研究。
From the view of the computing times, service effects and monitoring results, the simplified crop water shortage index model was more suitable for practical use.
从简化后模型的计算量、时效响应和实际对比结果来看，该简化模型可以进行实际应用。
The effective hemisphere model (EHM) lodged by BenAsher can apply in drip irrigation system design and field crop soil water management.
由Ben - A sher等提出的等效半球模型EHM (EffectiveHemisphereModel)可用于滴灌系统设计和田间滴灌作物土壤水分的管理。
Practical application shows that the model is helpful to reduce irrigation water application and to improve crop yield and production profit.
田间试验结果表明，利用这种储水灌溉模式，实现了节水、高产、增效。
According to hilly areas of economic crops for water-saving technologies and equipment Research, which need to get water demanding information and crop irrigation model.
针对丘陵地区经济作物节水关键技术及设备研制课题需要解决需水信息采集和作物的灌溉模型的问题。
The concept of crop water requirements was discussed, based on which the calculation model of crop water requirements was established.
论述了作物需水量的概念及其计算模式。
The utility model can solve the problem of crop irrigation in hilly area, with effects of saving water source and human power reached simultaneously.
本实用新型可解决丘陵地区农作物灌溉的问题，同时达到节约水源、节省人力的效果。
The utility model can solve the problem of crop irrigation in hilly area, with effects of saving water source and human power reached simultaneously.
本实用新型可解决丘陵地区农作物灌溉的问题，同时达到节约水源、节省人力的效果。
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