皖西南地区春播牧草的适应性研究

对皖西南地区春播的9个牧草品种的适应性,草产量和营养成分进行分析,结果表明:墨西哥玉米、菊苣、杂交狼尾草、甜高粱产量高,干草产量和鲜草产量均在95 t/hm2和15 t/hm2以上,适应性强,品质优良,适合在皖西南地区大面积推广种植。苦荬菜和籽粒苋产量中等,蛋白质含量高达22%以上,青绿多汁,适口性好,可以做为优质牧草在皖西南地区大面积推广种植。饲用玉米、皖草2号、苏丹草产量较低,鲜草产量均在70 t/hm2以下,饲用玉米无再生性,皖草2号、苏丹草在高温条件下病虫害严重,种植时应该注意病虫害防治。

Study On the adaptability of some spring sowing forages in the southwest area of Anhui Province

The adaptability,yield and nutrients concentration of 9 spring sowing forages were studied in the southeast area of Anhui Province and the results indicated that Euchlaena mexicana,Cichorium intybus,Pennistum americanum×P.purpureum and Sorghum dochna showed higher yields and their fresh yields and dry matter yield were more than 95 tons/ha and 15 tons/ha respectively.These 4 forages were proper to be extended in the southwest areas in Anhui because of their good adaptability and high quality.Vactuca denticulata and Amaranthus hypochondriacus showed middling yield but higher crude protein content(over 22%) and good palatability.The yields of forage maize,Sorghum bicolor×Sorghum sudanense and Sorghum sudanense were relatively low(below 70 tons fresh matter per hectare).The resistance of Sorghum bicolor×Sorghum sudanense and Sorghum sudanense to diseases and insect pests was poor in high temperature,so it should be careful while they were extended.