College of Life Sciences, Liaocheng University, Liaocheng 252059, China;
College of Life Sciences, Liaocheng University, Liaocheng 252059, China;
Huadian Agricultural Popularizing Center, Huadian Jilin 132400, China;
College of Life Sciences, Liaocheng University, Liaocheng 252059, China;
College of Life Sciences, Liaocheng University, Liaocheng 252059, China;
Straw; returning; Irrigation; Urease; Invertase:; Phosphatase;