【摘要】 营养液培养水稻ＯｒｙｚａｓａｔｉｖａＬ．秧苗２周后发现［ＮａＣｌ］超过０．１０３ｍｏｌ／Ｌ和［Ｃｕ－ＳＯ４］超过０．０９４ｍｍｏｌ／Ｌ时，秧苗地上部和根受毒害、致死．［ＣｕＳＯ４］达０．０３１ｍｍｏｌ／Ｌ时亦使根受伤害严重．加入硅酸盐使［ＳｉＯ２］达到１３．０４ｍｍｏｌ／Ｌ有抑制毒害作用，苗地上部鲜重增重率及根／苗干重比率高，而非毒害钠盐、铜盐处理组则以不加硅处理的苗鲜重增多及根／苗干重比率高更多还原

【Abstract】 The rice shoot and rice root were poisoned and all or somewhat died when the concentration of NaCl and CuSO 4 is more than 0.103 mol/L and 0.094 mmol/L in Yoshida’s nutrition solution after 2 weeks of culturing. In particular, the CuSO 4 concentration more than 0.031 mmol/L seriously inhibited and poisoned the rice root. After adding sodium silicate to increase SiO 2 concentration to 13.040 mmol/L in the nutrition solution and cultured rice seedling, the rice shoot and rice root were lightly poisoned and fresh weight of rice shoot and the dry weight ratio of root/shoot increased. But the seedling weight and the dry matter ratio of root/shoot increased in the nutrition solutions of non poisonous concentrations of Na and Cu salts when Si was not added.更多还原