【摘要】 用２．５～３０ｍｇ／ＬＣｅ（ＮＯ３）３浸泡水稻种子能明显提高稻种的活力，促进幼苗的生长。这与Ｃｅ提高稻种萌发期间的呼吸速率、增加淀粉酶、蛋白酶和脂肪酶等水解酶的活性有密切关系。其中用１０ｍｇ／Ｌ浓度的Ｃｅ（ＮＯ３）３浸种效果最好。当浓度超过５０ｍｇ／Ｌ时，种子的萌发、呼吸作用及三种酶的活性均受到抑制。更多还原

【Abstract】 The treatment with 2530mg/L Ce(NO3)3 can obviously increase seed vigor of rice and improve growth of seedling,which are closely related to the increase of respiratory rate and activities of amylase,proteinase and lipase during germinatio of rice.The treatment with 10mg/L Ce(NO3)3 is best.However,germintion,respiration and activities of the three enzymes are inhibited with over 50mg/L Ce(NO3)3.更多还原