| 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１３１７ ｍｇ／ｃｍ ３ ， Ｐ４５ 较 Ｎ６０ 根重密度增加００６７ ～０３７５ｍ 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７２７ｋｇ／（ ｍ ｍ ·ｈ ｍ ２） ， Ｎ６０ Ｐ９０ 氮肥利用率最高，子粒和植株分别为４８１８ ％ 和８８１７ ％ ， Ｎ１２０ Ｐ４５ 磷肥利用率最高，子粒和植株分别为２１１３ ％ 和３０４２ ％ 。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. |