摘要： 从光、肥、水资源的利用效率方面分析和探讨了果(梨、桃)粮(小麦+玉米、大豆、谷子)间作立体种植结构的合理性,结果表明,在果、粮分别常量施肥和有春浇三次水条件的灌溉粮田上,果树和粮食作物在光、肥、水利用上竞争不明显,而水的利用率可得到提高.运用土地当量法对其经济效益进行了分析,其LER值为1.20～1.32,因而在有灌溉条件的地区,发展果粮间作是经济、生态、社会效益相统一的种植业结构模式.

关键词: 果粮间作, 水资源利用, 产量效应

Abstract: The reasonability of interplanting of fruit trees (pear and peach) with crops (wheat + corn, soja bean, millet) was studied and analysed based on the utilization effect of light, fertilizer and water. In the field, which was manured in common amount and watered 3 times in period of spring, the fruit trees didn’t compete significantly with the crops in utilizing light,fertilizer and water,and the utilization rate of water was increased. The economic benefit analysed by the method of LER (land eguivalent ration) indicated that the LER value was 1.20-1.32.Therefore,in the regions which have irrigation condition, the interplanting pattern of the fruit trees with the crops is a reasonable planting model which can combine the economic, ecological and social benefits.

Key words: Fruit trees-crops interplanting, Utilization of light, fertilizer and water, Yield effect