农田水分平衡状况对产量有明显的影响。
The farmland hydrological balance "had an obvious effect on yield."
通过定位试验，对宁南黄土丘陵区几种轮作方式的农田水分平衡进行了研究。
The location experiments have been carried out to study soil moisture balance of farmland under different rotation systems in loess hilly areas of South Ningxia.
在农田水分平衡中，较难测定的要素有农田蒸腾蒸发量、地下水毛细上升量和土壤水渗漏量。
Of all components of water balance in farmlands, evapotranspiration, capillary rise from a water table and deep percolation are difficult to determine.
主要结论如下：（1）对洛阳地区三种主要种植制度下的农田水分平衡状况及效益进行了全面系统分析。
The main results are as follows:1. The water equilibrium characters and efficiency of different cropping systems was researched in Luoyang.
在土壤-植物-大气系统中，土壤有效水分贮存量、作物耗水量和有效降水量是农田水分平衡的主要组成因子。
In soil-plant-atmosphere system, soil available water content, crop water consumption, and effective precipitation are the main factors in water balance equation of farmland.
通过分析地膜覆盖后土壤水分平衡的变化特点，建立了地膜覆盖前后农田土壤湿度变化的模拟方程。
The simulating models about the change of soil water content under plastic mulch were established by analysing the changes of soil water balance after mulching.
通过分析地膜覆盖后土壤水分平衡的变化特点，建立了地膜覆盖前后农田土壤湿度变化的模拟方程。
The simulating models about the change of soil water content under plastic mulch were established by analysing the changes of soil water balance after mulching.
应用推荐