Intercropping Crop Phosphorus Nutrition To Promote The Role Of Mechanistic Studies

The obeces of this study were to determine the mechanisms by which more effective use is made of nutrients by intercropping compared with sole cropping. Interspecific facilitative and competitive interactions between intercropped species were assessed in pot experiments in which root system partitions were used to determine interspecies root interactions in wheat/maize, maize/faba bean intercropping systems. The results are as follows: 1 The interspecific interactions between faba bean and maize are maily interspecies facilitative interactions. Faba bean was good to maize. The biomass of intercropping maize was higher than these of monocropping maize and the biomass of intercropping faba bean was close to those of monocropping faba bean.The interspecies facilitative interactions were weaker in soil which was lack of P. P application can increase the biomass of maize,but it can't increase the biomass of faba bean. Faba bean can gain high yield even the soil is lack of P. 2 The interspecific nutrients facilitative interactio is were strong between maize and faba bean. The intercropping faba bean uptook more N than monocropping faba bean. The intercropping maize uptook more N,P than monocropping maize. 3 The interspecific competitive interactions were strong between maize and wheat. Wheat proved to be more competitive than maize in intercropping system. As a result of interspecific competition,wheat gained more nitrogen and phosphorus from the soil and had improved nutrition status. The biomass of intercropping wheat was higher than these of monocropping wheat. When the interspecific root competitive interactions were eliminated by inserting nylon net or plastic sheet between wheat and maize , The interspecific nutrients facilitative interactions were strong.