|Author:||Lei, TingWu ; Zhan, WeiHua ; Xiao, Juan ; Huang, XingFa ; Mao, JianHua|
|Book Group Author:||NA|
A new cropping system of maize mixed with grasses was tried to make full and efficient use of water and to ease environmental problems such as soil erosion by water and wind in grain and forage feed production practices. Field experiments were conducted in Beijing, China, from early July 2001 to August 2002 to investigate the water use efficiency (WUE) under this mixture cropping system. Six treatments with two replicates were arranged as: bare field, maize only, rye only, lucerne only, rye-maize mixture and lucerne-maize mixture. Lysimeters were used to measure different components of water consumption in the crop fields for WUE estimation. From the yields and water consumption of crops under different treatments, combined WUE of maize and grasses were estimated. The results showed that the WUEs in the mixed cropping fields of maize-grasses were much higher than those in the fields where only maize or grass were grown. Averaged WUE was 3.71 kg/m3 from the maize and rye mixture fields, 30% higher than that from the plots where only maize or rye were grown. Averaged WUE was 4.55 kg/m3 from the lucerne and corn mixture fields, 60% higher than that from the fields where only maize or lucerne were grown. Under the same conditions of irrigation, yields from the rye and maize mixture plots increased by 33%, compared with those from fields where only maize or rye were grown. The yields from lucerne and maize mixture fields were 61% higher than those from fields where only maize or lucerne were grown. The experimental results also indicated that maize and lucerne mixture cropping was better than a maize-rye mixture system.
|Pages:||55 - 59|
|Journal:||International Journal of Sustainable Development and WorldEcology|
crop yield, lucerne, maize, mixed cropping, plant waterrelations, rye, water use efficiency, Beijing, China, Medicago, Medicagosativa, Secale cereale, Zea mays, Papilionoideae, Fabaceae, Fabales,dicotyledons, angiosperms, Spermatophyta, plants, eukaryotes, Medicago,Secale, Poaceae, Cyperales, monocotyledons, Zea, Northern China, China,East Asia, Asia, Developing Countries, alfalfa, corn, Peking, FieldCrops (FF005) (New March 2000), Forage and Fodder Crops (FF007) (NewMarch 2000), Plant Water Relations (FF062), Plant Production (FF100),Plant Cropping Systems (FF150)