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栗钙土水肥耦合效应的田间研究

标题: 栗钙土水肥耦合效应的田间研究
英文标题: A FIELD RESEARCH ON THE EFFECT OF WATER FERTILIZER COUPLING IN CHESTNUT SOIL
作者: 王殿武,文宏达,褚达华
英文作者: Wang Dianwu Wen Hongda Chu Dahua (Agri. Univ. of Hebei,Baoding 071001)
出版时间: 1999-09-20
机构: 河北农业大学!保定071001,河北农业大学!保定071001,河北农业大学!保定071001
关键词: 水肥耦合,栗钙土,莜麦,水分利用效率,肥料利用率
英文关键词: Water fertilizer coupling,Chestnut soil,Naked oat,Water use efficiency,Fertilizer use efficeincy
刊名: 植物营养与肥料学报
英文刊名: 植物营养与肥料学报
ISSN: 1008-505X
期号: 03
国内刊号: 11-2992/S
基金: 国家“九五”重点科技攻关项目
主题: 栗钙土水肥耦合效应的田间研究
页码: 36-43
分类号: S158;
出版单位: 植物营养与肥料学报
数据来源: CNKI
是否SCI: false
是否EI: false
是否核心: false
摘要: 高寒半干旱栗钙土农田水肥耦合效应明显。供水量为250 ~450 m m 条件下,氮磷合理配施改善了地上部生物学性状,促进了地下部根系发育;供水350 m m N120 P90 处理0 ~40c m 根重密度最高,达1317 mg/cm 3 , P45 较 N60 根重密度增加0067 ~0375m g/cm 3 。供水为150 m m 的干旱年型,水分是限制作物生产的主导因素,而供水250 ~450 m m 年型主导因素则是土壤营养不足。供水量350 m m N120 P90 处理作物水分利用效率最高,可达727kg/( m m ·h m 2) , N60 P90 氮肥利用率最高,子粒和植株分别为4818 % 和8817 % , N120 P45 磷肥利用率最高,子粒和植株分别为2113 % 和3042 % 。水肥合理耦合有效地提高了作物产量和水肥利用率。
英文摘要: The effect of field water fertilizer coupling was very significance in chestnut soil in semi arid region with cold and high elevation. Under amounts of water supply 250~450mm, the concerted use of nitrogen and phosphate fertilizer could improve biological characteristics of aerial part, and promote root system development of subsurface part. The treatment of water supply 350mm and N 120 P 90 had the highest density of root weight which was 1 317mg/cm 3, and under water supply 250~450mm the density of root weight increased 0 067~0 375mg/cm 3 using P 45 than that N 60 . Water was the main factor limited crop productivity in dry year of water supply 150mm. In other years of water supply 250~450mm the deficient nutrition was the main limiting factor. The treatment of water supply 350mm and N 120 P 90 had the highest water use efficiency which was 7 27kg/(mm·hm 2), N 60 P 90 had the highest nitrogen use efficiency which were 48 18 and 88 17 percent seperately in grain and plant of naked oat, the highest phosphate use efficiency was in N 120 P 45 which were 21 13 and 30 42 percent seperately in grain and plant. So rational water fertilizer coupling could raised effectively the yield and water and fertilizer use efficiency.