玉米大豆间作条件下磷素的吸收利用

Study on phosphorus being absorbed and utilized under the condition of soybean and maize intercropping

通过田间栽培试验,研究玉米、大豆间作及相应单作不同时期作物吸磷量、根际土壤酸性磷酸酶活性以及地上部生物学产量差异。结果表明,间作对玉米吸磷量、玉米根际土壤酸性磷酸酶活性以及玉米地上部生物学产量有明显的促进作用,间作玉米吸磷量、根际土壤酸性磷酸酶活性、地上部生物学产量明显比相应单作分别增加31.64%、31.46%、47.04%。而间作大豆吸磷量、地上部生物学产量较相应单作降低8.18%、10.99%,差异不显著。

By cultivation in the field, under the condition of monocropping and intereropping of maize and soybeen, the comparative study has been conducted on the phosphorus amount absorbed by crop, the acid phosphatase activity in rhizosphere soil and the biomass on the ground in different growth periods. The result shows that intereropping has an obvious effect on phosphorus amount absorbed by maize, acid phosphatase activity in the root border soil and biological outputs on the ground. The amount of phosphorus absorbed by maize, acid phosphatase activity in the root border soil and biological outputs on the ground increased by 31.64%,31.46%,47.04% than the corresponding single cropping. The amount of phosphorus absorbed by soybean and biological outputs on the ground reduced by 8. 18% and 10. 99% than the corresponding single cropping, the difference is not prominent.