菠菜耐氯临界值研究

STUDY ON THE CRITICAL VALUE OF CHLORINE TOLERANCE OF SPINACH

在中性紫色土上,菠菜耐氯临界值为800～940ppm。相应,茎叶含氯1.91%,根含氯1.35%。但在此范围内菠菜Vc和NO_3-N含量显著降低。

The critical value of Cl tolerance of spinach is 800 to 940 ppm in the neutral purple soil. Correspondingly, the Cl content of the stalk and the leaf is 1.91%, and the Cl content of the root is 1.35%. In the above range, the Vc and NO_3-N content is remarkablly reduced by Cl.