摘要
耕作系统主要包括土壤系统、作物系统和区域气候系统等几个相对独立、但又紧密关联的组成部分,涉及作物栽培模式、作物类型、杂草和病虫害及农田水土资源管理等方面,在黄土高原生态系统管理和农业可持续发展中占有重要地位。过去50a(1951-2000年),黄土高原的年平均气温升高了1.1℃,且其变率逐渐增加,降雨和热量资源分布呈现复杂的时空异质性。作物种植区域的变迁、熟制制度的演变和农田灾害的加剧促使农田管理模式不断寻求改变,对当地农业耕作系统产生了深远影响。本文总结了黄土高原过去多年的气候变化(气温、降水量、积温)特征和发展趋势,气候变化下耕作系统(种植区、耕作制度、土壤环境)和作物系统(需水量、物候、品种、产量)的演变规律,作物与土壤互作关系,以及气象灾害对黄土高原耕作系统的影响,并提出气候变化下耕作系统适应性管理途径和策略。旨在为黄土高原耕作技术和田间管理提供新的理论,寻求气候变化下区域农业可持续发展应对策略。
Farming system generally consists of several components including soil system, crop system and regional climatic system which are relatively independent but closely associated with each other. It is involved crop cultivation pattern, crop type, weeds, pests and soil ＆ water resource management in farmland and so on, which plays an important role in ecosystem management and sustainable agricultural development in the Loess Plateau. Over past fifty years （1951-2000）, the annual average temperature increased by 1.1℃, and its variability was enhanced gradually in the Loess Plateau. Complex spatial-temporal heterogeneity existed in the rainfall and heat resource distribution. The changing crop area, developing cropping system, and increased agriculture disasters have promoted the innovation of farm management, which exerted a far-reaching influence on local farming system. This paper summarized the characteristics and development trend of the changing climate, and the evolution of fanning system （included the evolvements of crop type, soil moisture and nutrient characteristics） and cropping system （included water requirements, phenology, crop cultivars and yield） under climate change, the interaction between crops and soil and the affect of meteorological disasters on farming system in the Loess Plateau. The approaches and strategies of adaptive cropping system management under climate change were suggested. The aims to provide novel theoretical potential for farming tillage technology and field management, and seek coping strategies for sustainable regional development under climate change.
出处
《中国农业气象》
CSCD
北大核心
2015年第4期393-405,共13页
Chinese Journal of Agrometeorology
基金
科技部国际科技合作专项(2015DFG31840)
教育部直属高校海外名师项目(Ms2011LZDX059)
公益性行业(气象)科研专项(GYHY201106029-2)
高等学校博士学科点专项科研基金项目(博导类)(20110211110022)
关键词
气候变化
黄土高原
耕作系统
演变
气象灾害
土壤系统
适应性管理
Climate change
The Loess Plateau
Farming Adaptive management system
Evolution
Meteorological disaster
Soil system.
作者简介
邓浩亮（1988-），甘肃平凉人，硕士生，研究方向为农业水土工程。E-mail：denghaoliang521@163．com
通讯作者。E-mail：zhanghj@gsau．edu．cn；
通讯作者。E—mail：xiongyc@lzu．edu．cn
