|Author:||Deng, XiPing ; Shan, Lun ; Shinobu, I.|
|Book Group Author:||NA|
Pot and field experiments were conducted to investigate the spring wheat yield, growth characteristics and water use efficiency under the fertilizer application and limited water conditions in the loess hilly region, located in Ningxia Hui Autonomous Region, China. For pot experiment, soil fertility treatments were as follows: no fertilizer application (F0), N 0.6 g and P2O5 0.3 g per pot (F1), and N 1.2 g and P2O5 0.6 g per pot (F2), while soil water treatments were: maintaining 40% of the capillary capacity (WS0); as WS0, except for recovering 60% of the capacity for 10 days at jointing stage (WS1), at booting stage (WS2), and at early grain filling stage (WS3). For field experiment, two treatments were employed: (i) irrigation amounts, including 9 treatments of 0, 30, 45, 60, 90, 150, 180, 240 and 300 mm; and (ii) irrigation stages under the 60 mm of irrigation quantum, irrigation time including 4 treatments of no irrigation, jointing stage, booting stage, and grain-filling stage. Comparing with treatment F0, leaf areas in treatment F1 and F2 were increased by increased fertilizer input. Soil fertility significantly affected the root system growth. Comparing with F0, in F1 and F2 root biomass was increased by 84.9 and 100.7% while shoot biomass increased by 115.6 and 248.8%, respectively. Regression analysis of the grain yield and water use at each growth stage indicated that effective order of periodical water use on the grain yield was: jointing>booting>tillering>grain filling stage. Considering irrigation schedule, the effects sequence of limited irrigation was: jointing>booting>grain filling stage.
|Pages:||84 - 91|
|Journal:||Transactions of the Chinese Society of Agricultural Engineering|
arid lands, crop growth stage, crop production, crop yield,dry farming, evapotranspiration, growth, irrigation scheduling, leafarea, nitrogen fertilizers, phosphorus fertilizers, plant waterrelations, root systems, roots, shoots, soil fertility, tillering, wateruse efficiency, wheat, yield components, China, Ningxia, Triticum,Triticum aestivum, Poaceae, Cyperales, monocotyledons, angiosperms,Spermatophyta, plants, eukaryotes, Triticum, East Asia, Asia, DevelopingCountries, North Western China, China, dryland farming, Ningsia,Ningsia-Hui, phosphate fertilizers, Field Crops (FF005) (New March2000), Plant Physiology and Biochemistry (FF060), Plant Water Relations(FF062), Plant Production (FF100), Soil Physics (JJ300), Soil Fertility(JJ600), Fertilizers and other Amendments (JJ700), Soil Water Management(Irrigation and Drainage) (JJ800) (Revised June 2002) [formerly SoilWater Management]