• ISSN 1008-505X
  • CN 11-3996/S
王殿武, 文宏达, 褚达华. 栗钙土水肥耦合效应的田间研究[J]. 植物营养与肥料学报, 1999, 5(3): 227-234. DOI: 10.11674/zwyf.1999.0305
引用本文: 王殿武, 文宏达, 褚达华. 栗钙土水肥耦合效应的田间研究[J]. 植物营养与肥料学报, 1999, 5(3): 227-234. DOI: 10.11674/zwyf.1999.0305
Wang Dianwu Wen Hongda Chu Dahua, . A FIELD RESEARCH ON THE EFFECT OF WATER FERTILIZER COUPLING IN CHESTNUT SOIL[J]. Journal of Plant Nutrition and Fertilizers, 1999, 5(3): 227-234. DOI: 10.11674/zwyf.1999.0305
Citation: Wang Dianwu Wen Hongda Chu Dahua, . A FIELD RESEARCH ON THE EFFECT OF WATER FERTILIZER COUPLING IN CHESTNUT SOIL[J]. Journal of Plant Nutrition and Fertilizers, 1999, 5(3): 227-234. DOI: 10.11674/zwyf.1999.0305

栗钙土水肥耦合效应的田间研究

A FIELD RESEARCH ON THE EFFECT OF WATER FERTILIZER COUPLING IN CHESTNUT SOIL

  • 摘要: 高寒半干旱栗钙土农田水肥耦合效应明显。供水量为250~450mm 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350mmN120P90处理0~40mm 根重密度最高,达1.317mg/cm3 , P45较N60根重密度增加0.067~0.375mg/cm3。供水为150mm的干旱年型,水分是限制作物生产的主导因素,而供水250~450mm年型主导因素则是土壤营养不足。供水量350mm N120P90处理作物水分利用效率最高,可达7.27kg/(mmhm2), N60P90氮肥利用率最高,子粒和植株分别为48.18%和88.17%,N120P45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。

     

    Abstract: 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 N120P90 had the highest density of root weight which was 1.317mg/cm3, and under water supply 250~450mm the density of root weight increased 0.067~0.375mg/cm3 using P45 than that N60. 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 N120P90 had the highest water use efficiency which was 7.27kg/(mmhm2), N60P90 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 N120P45 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.

     

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