Effect of rotation tillage on soil microbial biomass and enzyme activity of broccoli
In order to study the effects of crop rotation patterns on soil microbes and enzyme activities, "broccoli-free" rotation was used as control, and "broccoli-pumpkin", 1 a rotation of "broccoli-early rice" and 2 a rotation of "broccoli-early rice" were selected.Microorganism and enzyme activity of soil were tested before broccoli planting and after harvest.Before broccoli planting, the quantity of bacteria, actinomycetes and fungi were the highest in"broccoli-pumpkin" rotation soil.After broccoli harvest, the quantity of bacteria and fungi was the highest in 2 a rotation of "broccoli-early rice" soil, while the quantify of actinomycetes was the highest in 1 a "broccoli-early rice" rotation soil.Before broccoli planting, soil microbial biomass nitrogen was the highest in 1 a rotation of "broccoli-early rice".After broccoli harvest, soil microbial biomass nitrogen and carbon were the highest in 2 a rotation of "broccoli-early rice" soil.Before broccoli planting, soil urease activity was the highest in 2 a rotation of "broccoli-early rice" rotation.After broccoli harvest, soil urease and sucrase activity were both the highest in 2 a rotation of "broccoli-early rice"soil.In conclusion, compared with the other 3 rotation modes, 2 a rotation of "broccoli-early rice" could effectively improve soil microbial environment and promote soil enzyme activity in broccoli cultivation land.
NETL
NSTL
万方数据
维普
