渭河谷地地下水位变化与作物需水关系

The Relation of the Variation of Groundwater Level for the Wei River Valley and Crops Wants Water

根据天水农试站１９８３—１９９２年地下水位观测资料，分析得出了当地地下水位的变化规律和地下水对土壤水分变化的影响，并根据当地主要粮食作物的生长特点，对其需水与地下水位变化的关系进行了探讨。

According to the groundwater level observational data during 1983 1992 ofTianshui Agricultural Meteorological Experiment Station, the variation rule of groundwaterlevel and the efforts of groundwater to the variation of soil moisture are analvsed. On the ba-sis of main crops growth characteristic,the relation between the variation of groundwater lev-el and crops requires water are also discussed;