外源乙酰丙酸钾根施对油菜生长及盐碱土改良的影响

Effects of Exogenous Root Application of Potassium Levulinate on Growth and Indexes of Salinity Soil

以3叶1心期油菜(Brassica napus L.)为试验材料,研究了外源乙酰丙酸钾根施对盐碱土中生长的油菜的生物量、元素含量(K、Na、K/Na)以及盐碱土pH、水溶性Na含量和盐分含量的影响。结果表明,乙酰丙酸钾对油菜生物量(鲜重值、干重值、含水率)无显著影响,但能显著降低油菜叶片中的Na含量,提高K/Na比率,增强油菜抗盐能力;乙酰丙酸钾对盐碱土pH、交换性Na含量和盐分无显著影响,对盐碱土无改良作用。

Brassica napus L.was used as material to study the biomass and element content(K,Na,K/Na)of rape and pH,soluable Na and salinity of saline-alkaline soil by exogenous potassium levulinate.The results showed that potassium levulinate had no significant effect on rape biomass(fresh weight value,dry weight value,water content).Potassium levulinate significantly reduced soluable Na content and increased K/Na ratio in rap leaves,Potassium lev⁃ulinate could reduce the absorption of salt.Salt capacity;potassium levulinate has no significant effect on pH,solu⁃able Na content and salinity of saline-alkaline soil,potassium levulinate has no effect on the improvement of salinealkali soil.