Effect of different cropping rotations on enzyme activities in rhizosphere soil and production quality of Angelica sinensis
- Author:
Xin-Hui ZHANG
1
Author Information
1. College of Pharmacy
- Publication Type:Journal Article
- Keywords:
Angelica sinensis (Oliv.) Diels;
Continuous cropping;
Cropping rotations;
Enzyme activity;
Main cropping;
Rhizosphere soil
- From:
Chinese Traditional and Herbal Drugs
2011;42(11):2322-2325
- CountryChina
- Language:Chinese
-
Abstract:
Objective: To study the effects of three cropping rotations (i.e. the main cropping, stubble, and continuous cropping) on the soil enzyme activity in rhizosphere soil, yield, and quality of Angelica sinensis. Methods: In rhizosphere soil of different cropping rotations, the activities of urease, phosphatase, and polyphenoloxidase were determined with colorimetry, and the activities of catalase with potassium permanganate titration. Results: Enzyme activities were strongly affected by different cropping rotations. The activities of urease and phosphatase of main cropping soil were higher than those of continuous cropping soil at the significant level in the seedling and harvest stages. The activities of urease were decreased by 16.53% and 37.17%, the activities of neutral phosphatase 28.01% and 30.69%, respectively. While the activity of polyphenoloxidase increased pronouncedly (15.10%, 83.67%, and 38.53%) in continuous cropping rotation in all growth stages (seedling, root enlargement, and harvest). The yield, essential oil content, and extract content under continuous cropping were significant lower than those in main cropping (decreasing 49.00%, 25.26%, and 12.58%, respectively). Conclusion: Both yield and quality of A. sinensis decline, and urease and neutral phosphatase activities of rhizosphere soil significantly decline in the continuous cropping, while the catalase and polyphenoloxidase activities present rising tendency.
