Effects of Deep Vertical Rotary Tillage on Soil Microbial Biomass and Enzyme Activity of Maize Fields on Saline-Alkali Land in the Northern Yinchuan Plain of Ningxia
In order to explore the effects of deep vertical rotary tillage on soil physical and chemical properties and soil microorganisms,soil enzyme activities and number of microorganisms during the growing and harvesting periods of maize were studied under this model on saline-alkali land in the Northern Yinchuan Plain of Ningxia.The results showed that compared with the traditional farming methods,deep vertical rotary tillage depth of 40 cm increased the number of microorganisms and the activity of soil enzymes in the 0～20 cm soil layer during the growing period of maize,among which the number of bacteria and the activities of urease,phosphatase and sucrase were the highest in the three kinds of deep vertical rotary tillage depths.Deep vertical rotary tillage depth of 40 cm and 45 cm could improve the microbial quantity and soil enzyme activity in the soil layer of 20～40 cm during the growing period of maize and the soil layer of 0～40 cm during the harvesting period of maize.Deep vertical rotary tillage can improve the number of soil microorganisms and soil enzyme activity in saline-alkali soil to some extent,and the effect of deep vertical rotary tillage depth of 40～45 cm was the best.
Deep vertical rotary tillageSoil microorganismsSoil enzyme
NETL
NSTL
万方数据
维普
