The development theory and key supporting science and technologies of grasslands and animal husbandry in China

No.1 document for 2015 of central government explicitly proposed accelerating development of grasslands and animal husbandry. The development of grasslands and animal husbandry is an important content of agricultural structure adjustment, is the important component of transformation and development of agricultural modernization, also is an important guarantee of quality and safety of grassland and livestock products and ecological security. The concept of grasslands and animal husbandry was innovative elucidated in this paper, and proposed that the concept of grasslands and animal husbandry is industry coupling relationship of three in one with grassland, herbivorous animal husbandry and extended industry, based on grasslands basic industries theory, ecological animal byproducts supplydemand equilibrium theory, industrial technology and product quality upgrading to stimulate economic growth theory, industrial convergence and coupling theory, innovationdriven development theory, further interpreted grasslands and animal husbandry is a new kind of composite industries with integrated multiindustry, its development mainly on the theory of ecological economics and development economics. The developing of grasslands and animal husbandry in grassland areas, half agriculturehalf herding areas and farming and pastoral areas in China exist different bottleneck problems, the paper put forward the related breakthrough key technology and the optimization model, clarified key points on scientific and technological support of grasslands and animal husbandry at different regions, which will provide theoretical basis and technological support for accelerated the health sustainable development of grasslands and animal husbandry.