关键词: 氮肥, 氮肥

Abstract: In order to estimate the feasibility of common bean (Phaseolus vulgaris)/maize intercropping applied on the actual production and the influence of dual inoculation (arbuscular mycorrhizal fungi and rhizobium) on them, by using pot experiment, some physiological indicators were measured under different cultivation methods and inoculation. The main physiological indicators were the beans and maize’s biomass, the NPK content and absorption, chlorophyll SPAD value, mycorrhizal infection rate and other indicators. The results indicated that, when inoculated the rhizobia alone, the total biomass of maize and bean under the monoculture condition are respectively 3.26 times and 1.25 times higher than that under the intercropping condition; under the dual inoculation condition, the total biomass of maize and bean reached 3.08 times and 1.25 times. While for the nitrogen and phosphorus absorption of each pot, the crops under intercropping condition was respectively 1.11 times and 1.05 times higher than the monoculture condition when they all inoculated with rhizobia alone; and when dual inoculated, the absorption of nitrogen and phosphorus under the intercropping condition were both 1.16 times higher than the monoculture condition. There were no significant differences for the biomass, content and uptake of NPK, chlorophyll content et al. when the crops were inoculated with arbuscular mycorrhizal fungi, but the number of nodules was decreased. Experimental studies showed that: the intercropping promoted the NP absorption to some extent. The mycorrhizal fungi had no role in promoting the growth of corn and bean and the uptake of NPK elements but also suppressed the rhizobium infect beans.