The suitable rate of nitrogenous fertilizer can improve the SPS activities,the content of soluble sugar,the root Sucrose Synthase(SS) acti...

• 适当施用氮肥可以提高沙参叶片SPS活性和可溶性糖含量及根中SS活性,又能够在收获时期保持叶片较低的可溶性糖含量,提高了沙参根中多糖含量和根的产量。