Introduction, Culture And Implication Research Of Several Silage Crops

8 varieties issued from the cross between Sorghum×Sudangrass (such as Jianbao, Wancao No2 etc.), 1 variety of forage Sorghum(Dalishi), and 2 perennial forage species in Chrysanthemum - Silphium perfoliatum L. and Cichorium intybus L. were introduced and planted. From which several adoptable forage crops were selected based on the observations and research results of their biologic characteristics, herbage yield and feeding value. The results are as follows:1,8 varieties issued from the cross between Sorghum×Sudangrass (such as Jianbao, Wancao No2 etc.), 1 variety of forage Sorghum (Dalishi) and 1 Pennisetum Hybrid (Nutrifeed)show the good adaptability, high yield herbage and excellent feeding value after plantation in Huhhot, they could be planted widely in this area.2,Silphium perfoliatum L shows the good performance, it could pass safely the winter in Huhhot, the winter survival had increased from 80% to 92% during three years of plantation; It can be cut three times every year and the fresh herbage yield can reach 3500 kg per mu. The nutrient value of this species performed also, the dry matter contain more than 11% of the CP, and less than 19% of the CF, which let it shows a high digest rate, sometimes this rate could reach 80% above. All of results above show that Silphium perfoliatum L. is a good forage crop, which can be widely planted in Huhhot area.3,The adaptability and the performance of Cichorium intybus were variant. The winter survival of three varieties such as Jikang, Ruanhong, Qikeli were nearly 0, the winter hardness of the varieties, Zhongxu No.2 and Zhongxu No.1 were medium, their winter survival were 20% and 25% respectively. Puna is a only variety, which could pass safely the winter in Huhhot, and its winter survival could reach 80%. The rate of returning green of puna in the first year of plantation was 80%, and 65% in the next year. It could produce 1600 kg fresh herbage per-mu every year, the dry matter of which contain 15%of CP, and 20%of CF, and its digest rate could attain 80% above. In general, the performance of Puna could not be compared with Silphium perfoliatum L. Although it has a higher value, the yield is low, and the rate of living in winter is not satisfied. If the herbage productivity and winter survival could be improved, it can be planted in local area as a good silage.