【摘要】 根据苹果园苹果树的根系密度资料和根区土壤水分动态资料,采用二种方法建立了苹果树的根系吸水模型,其一是根据根长密度资料建立的根系吸水模型,其二是根据土壤水分动态资料采用反推的方法建立的根系吸水模型;在此基础上采用2003年5月21日至5月30日、6月2日至6月20日和7月18日至8月1日3个阶段的实测资料对所建立的根系吸水模型进行了验证。结果表明:第二种方法建立的苹果树根系吸水模型的模拟精度略高于第一种方法。更多还原

【Abstract】 This paper used two kinds of methods to establish the apple tree root water uptake models in apple tree orchard. The first kind of method is to establish the apple tree root water uptake model according to the data of root length density; the second kind of method is to establish the apple tree root water uptake model according to the data of soil moisture. Then, the paper used the measured soil moisture data from May 21st to May 30th, and the data from June 2nd to June 20th, and the data from July 18th to August 1st to test the established models. The results showed: the simulation accuracy of the apple tree root water uptake model established by the second method is slightly higher than the model established by the first method.更多还原