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cje ›› 1997, Vol. ›› Issue (4): 1-5.

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Hydraulic Ecological Characteristics of Alley Cropping Systems and Its Productivity in Low Hill Red Soil Region

Zhang Bin, Zhang Taolin   

  1. Institute of Soil Science, Academia Sinica, Nanjing 210008
  • Received:1996-04-19 Online:1997-08-10

Abstract: Water loss through surfacer unoff and tr anspiration of alley cropping systems and its influence on the product ivity of the components of the systems in lo whilly red soil region were reported her e.T he results show ed that compared w ith t he orig inal sparse g rass land and conventional farming system of single peanut,alley cropping systems profoundly decr eased surface r uno ff.However,in the dr y sea son,the intercr opped peanut was under more serious water stress,whose stomatal resist ance in creased and tr anspiration rate decreased.T he diurnal v ar iation of transpiration rate of peanut alleycropped w ith Choerosp ondias ax illar is in t he system of high density of tr ees indicated that the peanut had been bey ond its capacity of adjust ing water flow under w ater stress,w hich r esulted in de crease of peanut yield and its biomass.In contrast,the hedgerow tr ees were favor ed in the competition,and they gr ew more rapidly than their counterpart tree,w hich did not intercropped w ith peanut.T he results also showed that there were less competitio n in the system,w here Choer osp on dias ax illar is trees w er e less densely planted or slow_gr own trees of Eucommia ul moides were planted.

Key words: phytoremediation, DEHP, enhanced CO2 fertilization, residual concentration.