关键词: 荷斯坦奶牛, 荷斯坦奶牛, Wnt7a, PR, western blotting, 受孕, 孕检

Abstract: The paper aims to give a full play to the role of tobacco curing barn during the non-baking period, improve its utilization, and increase the income of tobacco farmers. Using the structure and function of the original bulk curing barn, we carried out the rice drying experiment through the developed drying apparatus of bulk curing barn. The results showed that: compared with manual tedding of rice, the drying rate of the bulk curing barn could be effectively improved, and its requiring area was small, its requiring time was significantly reduced and the cost of drying was obvious cut; the quality of rice grain after drying was higher than that of manual tedding, and the germination rate could reach more than 95%, showing no significant difference with that of the manual tedding; drying rice by bulk curing barn had a roasting capacity of more than 5000 kg each time, the drying cost was about 0.07 yuan/kg; compared with the manual tedding 0.23 yuan/kg, the cost saving was up to 160 yuan/t, and the average cost reduction was about 1200 yuan/hm2.