关键词: 设施园艺, 设施园艺, 温室设施, 环境控制, 产业

Abstract: For knowing ordinary varied regular of cotton yield of Hebei province and making clear aim and prospect of breeding in the future, he used the model of GM(1,1) of grey system through analysis regional experiment yield of cotton varieties which were approved by Hebei variety committee. a predictable model of the occurring of cotton`s develope: ^X(1)(k+1) =38965.718385e 0.024221-37990.718385 was formulated, Model to forecast the cotton produce of Hebei province production under the conditions of relative stability of all its relevantelements and to provide scientific information for production planning and decision making. The overall aim of cotton breeding which optimized structure of variety and quality was maked clear, it was keeping advantage of seed selecting medium count yarn variety and paiying attention to seed selection long-staple and short-staple upland cotton of shortage in market.