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1.对常用调节计算方法的认识 在地下水资源规划评价中通用的多年均衡法是多年调节时历法,根据历史过程确定某水源地或灌区的可开采量和灌溉保证率,并结合今后开发要求确定未来的开采量和补给量。常用的多年调节方法一般采用以年、季或月为计算时段。随着研究的不断深入和农业生产实际的需求,发现该方法存在丙个方面不足,一是采用年、季或月为计算时段时距太长,与作物生长不同生育阶段实际需水不相适应;二是国内常用的地下水调节计算方法是先确定一个起调水位埋深H_(起调),并以此作为调节控
1. Recognition of commonly used methods of adjustment and calculation The multi-year equilibrium method commonly used in the evaluation of groundwater resources planning is the multi-year adjustment of calendar time method, according to the historical process to determine the recoverable amount and irrigation guarantee rate of a water source or irrigation area, combined with future development requirements The future of the amount of extraction and replenishment. Commonly used multi-year adjustment method generally used to calculate the time of year, quarter or month. With the continuous deepening of research and the actual demand of agricultural production, we find that this method has some shortcomings. One is using the year, the season or the month as the calculating time-span, which is not suitable for the actual water demand at different growth stages of crop growth ; Second, the commonly used method of groundwater regulation calculation is to determine a starting water depth H_ (tone), and as a regulation