本文通过详实的资料和细致地野外调查，全面地分析了通辽地区的地表物质组成、水分状况及其植被状况。

Though full materials and many field experiments in study area, surface material compositions, moisture state and vegetation condition are analyzed comprehensively.

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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.

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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.

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