关键词: 水稻, 水分亏缺, 干旱, 秧苗素质

Abstract: In order to clarify the effects of water management on quality of rice seedling, using Huanghuazhan, IR36, Zhongzheyou 1, Tianyouhuazhan, Yongyou 538 and Zheyou 18 as materials, PEG6000 was used to simulate the water deficit, and the water content of the substrate was controlled in the process of seedling raising. The results showed that, the compensation effect caused by light drought could improve the seedling quality by increasing the plant height and leaf area, enhancing the root characteristics of seedlings, and increasing the dry matter accumulation; moderate and severe water stress could decrease the plant height and leaf area, weaken the root characteristics of seedlings, and inhibit dry matter accumulation. The test results also showed that when the soil water potential is - 60 kpa, the effect of improving the seedling quality is the test.

Key words: rice, water deficit, drought, seedling quality