Comparative study of forage production performance with three kinds of planted models

Pennisetum hydridum, Sorghum bicolor and Hemarthia compessa are the three highlighted forage grasses in Chongqing. The reasonable collocation can bring higher nutrient yield and more forage grass to be used throughout the year in Chongqing. The study was made in order to determine the hay yield and main nutrient yield of the three planted model (the planting areas of P.hydridum∶S.bicolor∶H.compessa are 3∶1∶1, 1∶2∶1 and 1∶1∶1), and the most suitable planted pattern was screen out in Chongqing. The results showed that, the best planted area ratio of P.hydridum, S.bicolor and H.compressaa was 3∶1∶1, which had the highest hay yield(20 366.09 kgha-1), yield of CP (1 677.38 kgha-1) ,yield of EE (620.15 kgha-1), yield of CF (6 851.76 kgha-1), yield of NFE(9 442.87 kgha-1), yield of Ca (237.97 kgha-1), and yield of P (128.86 kgha-1). In a word, the best model was 3∶1∶1, and this model could obtain a higher hay yield and nutrient yield.