title: [Effects of conservation tillage on soil water conservation and crop yield of winter wheat-spring maize rotation field in Weibei highland].
abstract: A field experiment was conducted in 2007-2010 to study the effects of no-tillage, subsoiling, and deep-ploughing combined with balanced fertilization, traditional fertilization, and no (or lower amount) fertilization on the soil water storage, crop yield, water use efficiency (WUE), and economic return of winter wheat-spring maize rotation field in Weibei highland. Among the tillage measures, no-tillage in fallow period had the best effect in soil water conservation, followed by sub-soiling, and deep-ploughing. The average water storage in 0-200 cm soil layer in crop growth period under no-tillage and sub-soiling was 6.7% and 1.9% higher than that under deep-ploughing, respectively. Under the balanced, traditional, and no (or lower amount) fertilizations, subsoiling all showed the highest yield, WUE, and economic return, with the best effect under balanced fertilization. The three-year crop yield under sub-soiling combined with balanced fertilization was 6909, 9689, and 5589 kg x hm(-2), WUE was 18.5, 25.2, and 23.0 kg x hm(-2) x mm(-1), and economic return was 5034, 5045, and 7098 yuan x hm(-2), respectively. It was suggested that balanced fertilization combined with sub-soiling had the best effect in soil water conservation and yield- and income increase, being the more appropriate fertilization and tillage mode for the wheat-maize rotation field in Weibei highland.
authors: College of Agronomy, Northwest A & F University, Yangling 712100, Shaanxi, China. 52sunday6614@163.com
authors: Li-hua
authors: LH
authors: Zhang
authors: Jun
authors: J
authors: Li
authors: Zhi-kuan
authors: ZK
authors: Jia
authors: Bing-feng
authors: BF
authors: Liu
authors: Hong-li
authors: HL
authors: Zhao
authors: Jin-xia
authors: JX
authors: Shang
mesh_terms: D000383:Agriculture / Q000379:methods*; D000531:Altitude; D018533:Biomass; D002681:China; D005308:Fertilizers; D012621:Seasons; D012987:Soil / Q000032:analysis; D014908:Triticum / Q000254:growth & development*; D014867:Water / Q000032:analysis*; D003313:Zea mays / Q000254:growth & development*
chemical_list: D005308:Fertilizers; D012987:Soil; D014867:Water