Abstract:
The Effects of KNO3,K2SO4 and their mixed salt stress(0,50,100,150,200 mmol/L) on NPK and nitrite content in leaves of pepper Liangjian seedling were investigated.The results showed that KNO3,K2SO4 and mixed salt stress,there is a certain difference in impact on pepper seedling leaves of N content,SO42-prevented N absorption;Salt stress prevented P contents increasing in pepper seedling leaves;K contents showed a increasing trend with the increase of stress concentration;Nitrite content in pepper seedling leaves did not increased under KNO3 and mix salt stress;Low concentration of KNO3 and mixed with salt stress,pepper seedling leaves N content and nitrite content showed a highly significant positive correlation,the correlation coefficient of 0.830 ＊ ＊,a significant positive correlation with Pn,a significant negative correlation with the total K content;High concentrations of KNO3 and mix salt stress,the total N content in leaves of pepper seedlings,Chl content,soluble sugar content was significantly negative correlation.
Key words:
Secondary saliniaztion,
Pepper N P K Ntrite
CLC Number:
JIANG Wei, CUI Shi-mao, WANG Yong, CAO Ji-long, WANG Jian-guo, DU Jin-wei, YANG Shu-qing, HU Shuan-hong. Effects of KNO_3,K_2SO_4 and Their Mixed Salt Stress on N,P,K Content in Leaf of Pepper Seedling[J]. ACTA AGRICULTURAE BOREALI-SINICA, 2012, 27(5): 218-223. doi: 10.3969/j.issn.1000-7091.2012.05.041.