无机硫对韭菜生长及硝酸盐累积的影响  

Effects of Inorganic Sulfur on Growth and Nitrate Accumulation of Chinese Chive

作　　者：李晓峰[1] 谢鑫[1] 付雪清[1] 王俊玲[2] 高志奎[1] 

机构地区：[1]河北农业大学园艺学院,河北保定071001 [2]河北农业大学生命学院,河北保定071001

出　　处：《北方园艺》2013年第12期4-7,共4页Northern Horticulture

基　　金：河北省自然科学基金资助项目(C2009000625);河北省科技支撑计划资助项目(10220711)

摘　　要：针对韭菜生产中硝酸盐累积问题,研究了不同处理时期土壤施用和叶面喷施不同种类、浓度的无机硫对韭菜生长及硝酸盐累积的影响。结果表明:无机硫能促进韭菜的生长、促进硝酸盐的还原同化、降低韭菜叶片硝酸盐的累积;收割后0d和收割后10d土壤施用12g/m2的NaHSO3、收割后10d叶面喷施10mmol/L的NaHSO3可显著降低韭菜叶片硝酸盐含量6.68%、24.27%、25.54%;同时,无机硫能在一定程度上提高韭菜叶片硝酸还原酶(NR)活性,分别比对照提高了11.86%、27.43%、37.03%;并且,韭菜的株高、鲜重、叶绿素含量也均有增加。In view of nitrate accumulation in Chinese chive production,the effects of soil and foliar spraying different kinds of inorganic sulfur with different treatment periods and concentrations on growth and nitrate accumulation of Chinese chive were studied.The results showed that the effects of inorganic sulfur on growth and nitrate accumulation of Chinese chive were remarkable,the nitrate contents of Chinese chives were significantly decreased 6.68%,24.27%,25.54% with soil application 12 g/m2 of NaHSO3 after harvesting 0 days and 10 days,foliar spraying 10 mmol/L NaHSO3 after harvesting 10 days;meanwihle,the activities of nitrate reductase（NR） were increased 11.86%,27.43%,37.03%;and all of the heights,fresh weights and the chlorophyll contents were higher than the control.Therefore,activity of NR was significantly increased by inorganic sulfur,while the nitrate reduction assimilation was promoted,nitrate accumulating into the vacuole of Chinese chives was reduced,the chlorophyll content of the blade of Chinese chive and the growth were improved.

关 键 词：韭菜 无机硫 硝酸盐累积 硝酸还原酶活性 

分 类 号：S633.3[农业科学—蔬菜学]