下面一段论文引言用英语翻译

Reform and open policy for 20 years, our country feed industry rapid development, not only promoted the resources optimized disposition, raised the person livelihood of the people running water gentle health standard, moreover promoted under the grain yield low speed growth condition the animal husbandry, the cultivation industry high speed development. However after passes through several years fast increases long-term, our country feed industry enters the platform to send the exhibition period, appeared the competition to intensify, the profession average profit drops, the market rate of rise slows down and so on the undesirable tendency. This article aimed at restricts of a □□circulation channel our country feed industry development factors to carry on the analysis, elaborated the main question which in our country feed circulation channel pattern and the type, the feed circulation channel existed, and correspondingly put forward the feed circulation channel pattern development p