湖南坡耕地皇竹草+黑麦草周年供青模式研究

Research on the Annual Forage Supply of Pennisetum sinese and Lolium perenne Interplanting in Hunan Slope Farmland

[目的]以红壤坡耕地为研究对象,探讨玉米/皇竹草＋黑麦草周年供草模式。[方法]分别测定皇竹草＋黑麦草、玉米＋黑麦草2种周年供青方式的草产量及其营养成分,并对皇竹草的青贮技术及越冬留种技术进行了探讨。[结果]皇竹草＋黑麦草的周年供青方式能更好满足6-11月的青饲料和早春部分黑麦草饲料的供应,结合青贮试验,其营养品质和供青时期都优于传统的玉米＋黑麦草的周年供青方式。因此,对于坡耕地养殖户而言,种植产量高、易管理、品种好、多年生的皇竹草,套种黑麦草可能是更好的选择。皇竹草采用塑料袋青贮法,技术简单且易于操作适合普通农户少量青贮牧草。皇竹草地膜覆盖法留种较其他留种方法更经济可行,皇竹草的种蔸覆盖黄土越冬与其他方法相比更简单易行。[结论]该研究结果可为湖南坡耕地牧草周年高效供青生产模式的建立提供依据。

[Objective] The aim was to discuss maize/Pennisetum sinese ＋Lolium perenne annual forage supply mode with red soil slope farm-land as study object.[ Method] The grass yield and nutrient components of two annual forage supply modes P.sinese ＋L.perenne and maize＋L.perenne were determined respectively, silage technology of P.sinese and overwintering seed propagation technology was explored.[ Re-sult] The results showed that the mode of year round forage supply of P.sinese ＋L.perenne is better than the traditional mode of year round forage supply of corn ＋ryegrass.P.sinese ＋L.perenne interplanting mode could produce better green forage from Jun.to Nov.and early spring.P.sinese adopted plastic bag silage, which is simple and easy to operate, and it suits for common farmers to silage a few forage.The seed propagation of P.sinese control method with plastics film covering is more economic and feasible than other methods.Seed root of P. sinese covered loess to overwintering is more simple than other methods.[ Conclusion] The study provides basis for establishment of high effi-cient annual forage supply mode in Hunan slope farmland.