|
|||||
|
|
| 旱地农田肥水耦合效应及其模式研究 | |
| 引用本文： | 金轲,汪德水,蔡典雄,周涌. 旱地农田肥水耦合效应及其模式研究[J]. 中国农业科学, 1999, 32(5): 104-106 |
| 作者姓名： | 金轲 汪德水 蔡典雄 周涌 |
| 作者单位： | 中国农业科学院土壤肥料研究所，北京 100081 |
| 基金项目： | “九五”国家科技攻关资助 |
| 摘 要： | 旱地农业的基本问题是如何在水分胁迫下，合理施用肥料，充分发挥肥和水的激励机制和协同作用，提高水分的利用效率和在不增加施肥量的情况下，获得最大的经济效益，同时减少肥料对土壤、地下水、大气的污染，节约水肥资源，改善生态环境。本研究主要探讨农田水分与养分之间、各养分之间、作物与水肥间的动态平衡关系，以及作物生长发育和产量的形成对这些相互作用的影响。１ 材料与方法１．１ 试验地点试验设置在河南省洛阳农业科学研究所旱棚内，本区多年平均降水为５００～６００ｍｍ，地下水位为４～５ｍ。供试土壤为潮褐土，母质为洪… |
| 关 键 词： | 旱地农业 水分胁迫 土壤养分 冬小麦 |
A Study on the Interactive Effect and the Model of Water and Fertilizer on Dryland |
|
| Jin Ke,Wang Deshui,Cai Dianxiong,Zhou Yong. A Study on the Interactive Effect and the Model of Water and Fertilizer on Dryland[J]. Scientia Agricultura Sinica, 1999, 32(5): 104-106 | |
| Authors: | Jin Ke Wang Deshui Cai Dianxiong Zhou Yong |
| Abstract: | By referring to Wallance's MFYP curve and the result of previous experiment, this paper put forward a model of applying fertilizer on dryland, and analyse the interaction among N, P and water. The result of experiment show that: under the condition of higher soil water content before sowing, the interaction between N and P , P and water are Liebig synergistic type, but N and water is synergistic type; when applying N,P and water at the same time, the interaction is sequentially additive type, and they become Mitscherlish limitation factor. Under certain condition, the type of interaction for different factors can transform with each other. The response of N increases with the increment of soil water, but the response of P decreases with the increment of soil water. |
| Keywords: | Dry farming Water stress Soil nutrient Winter wheat |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ | |
| 点击此处可从《中国农业科学》浏览原始摘要信息 | |
| 点击此处可从《中国农业科学》下载全文 | |