Influences of different water and nitrogen supplies on soil biological environment in solar greenhouse

Influences of 2 water consumption(4541.0 and 2270.6 m³/hm²) and 3 nitrogen application(747.4, 373.9 and 0 kg/hm²) levels reciprocally supply treatments on soil biological environment were studied during solar greenhouse tomato production from Autumn to Spring. The activities of soil urease and phosphatase were inhibited with excessive water (4541.0 m³/hm²) and nitrogen (747.4 kg/hm²) supply, and invertase activity and soil microbial quantity were advanced with water and nitrogen coordinated supply. Comprehensively multi-objective evaluation showed water (2270.6 m³/hm²) and nitrogen (373.9 kg/hm²) were the optimum treatment for soil biological environment establishing under the experiment.