【摘要】 在半湿润偏旱区进行了施肥对向日葵水分利用效率影响的田间试验，结果表明，在一定的施肥范围内，肥水表现为互促协同效应，向日葵的水分利用效率随着施肥量的增加而提高，提高幅度为13．6％～45．3％。更多还原

【Abstract】 A experiment of the effects of fertilizer application on water use efficiency(WUE) of sunflower were conducted in Heyang. Shaanxi Province. semihumid area liable to drought. The result showed that the WUE of sunflower increased with the amount of fertilizer applied within a certain range of fertilizer application. The WUE of sunflower increasement were 13. 6% ~ 45. 3%. It was a important way to improve the WUE and yield of sunflower that using the technique of rational fertilizer application in sermihumid area liable to drought.更多还原