查询词典 border method of irrigation

SIRMOD method was employed to estimate the infiltration parameters for border irrigation under the condition of wheat planting.

针对现有估算方法存在计算工作量较大、精度不高的现状，根据田间实测资料，利用SIRMOD模型，对小麦畦灌条件下田间土壤入渗参数进行了估算。

The surface irrigation occupies 95% of the total irrigated area, the border irrigation is the main method in surface irrigation, so there is much importance in researching on the border irrigation water-saving means.

地面灌溉占我国灌溉总面积的95％，其中畦灌又是地面灌溉的主要方式，研究畦灌中的节水措施对于发展农业节水具有重要意义。

The one-dimensional complete hydrodynamic model for border irrigation based on the hybrid numerical method can obviously increase computational stability and convergence, and effectively improve computational precision and efficiency, and provide a good numerical simulation tool for the design of border irrigation system and performance evaluation.

基于混合数值解法的一维畦灌全水动力学数值模拟方法可明显增强数值计算的稳定性和收敛性，有效提高了计算精度和效率，为开展畦灌系统设计与性能评价提供了可靠的数值模拟手段。

The relationships between surface-water depth and distance from water inlet are fitted by a nonlinear least-square method,and then,based on the principle of water balance a linear regression method is proposed for estimating the soil infiltration parameters of border irrigation.

将畦灌地表水深与离畦首的距离之间的关系按指数函数进行非线性最小二乘拟合，并根据水量平衡原理提出了估算土壤入渗参数的线性回归法，避开了难以定值的地表储水形状系数。

According to practice of popularizing and applying water-saving irrigation technology in Sanhe well irrigation area in Hebei plain,this article puts forward a form of water-saving surface irrigation called "border irrigation by pipe move-back method".

根据河北平原三河井灌区节水灌溉工程推广应用的实践，提出了一种可称之为&支管退行式畦灌&的节水地面灌溉形式。

The absorption and distribution of chromium were studied in ryeusing nutrient culture technique and pot experiment.

采用不同浓度K2CrO4(0，0.4，0.8和1.2 mmol/L)的Hoagland营养液处理黑麦幼苗，测定铬在黑麦体内的亚细胞分布、铬化学形态及不同部位的积累。

By analyzing theory foundation of mathematical morphology in the digital image processing, researching morphology arithmetic of the binary Image, discussing two basic forms for the least structure element: dilation and erosion.

通过分析数学形态学在图像中的理论基础，研究二值图像的形态分析算法，探讨最小结构元素的两种基本形态：膨胀和腐蚀；分析了数学形态学复杂算法的基本原理，把数学形态学的部分并行处理理念引入到家实际应用中。