水分胁迫对水稻生长的影响

[目的]研究水分胁迫对水稻生长的影响。[方法]以水稻品种丰优一号为供试材料,采用不同铵硝营养配比作营养液,聚乙二醇(PEG-6000)模拟水分胁迫的方式,研究水稻叶片叶绿素含量、氮含量及株高。[结果]无论铵硝营养配比如何,正常水分条件下水稻叶绿素含量及氮含量都较水分胁迫及解除水分胁迫状态下的高,而水稻株高在水分胁迫条件下比正常水分条件下要高。[结论]不同配比的铵硝营养下水分胁迫对水稻叶片叶绿素含量、氮含量及株高有一定的影响,且影响不同。该研究为应对缺水现状,发展节水型水稻提供了基础资料。

The Influence of Water Stress on Rice Growth

Objective] The aim was to study effects of water stress on rice growth.[Method] With rice variety Fengyou No.1 as test material, using different ammonium nitrate nutrition ratio as nutrient solution, polyethylene glycol (PEG-6000) was used to simulate water stress mode, chlorophyll content, nitrogen content and plant height of rice was studied.[Result] No matter how is the ratio of ammonium nitrate nutrition, chlorophyll content, nitrogen content in rice under normal water conditions is higher than that in water stress and removal of water stress , plant height under water stress is higher than that in normal water conditions.[Conclusion] The influence of water stress on chlorophyll content, nitro-gen content and plant height of rice is different under various ammonium nitrate nutrition ratio .The study can provide the basic data for develop-ment of water-saving rice in response to the current situation of water shortage .