摘要
林下种草养禽是一种复合型生态农业模式,为了优化林下牧草的刈割方式,获得较高产量的优质牧草。以林下黑麦草为试验材料,设置不同刈割次数处理(1、2、3、4、5次),比较不同刈割次数对其生长性状、干物质累积、产量和品质的影响。结果表明:刈割4次处理,林下黑麦草鲜草和干草产量最高,分别为86.53 t/hm^2和11.83 t/hm^2,刈割5次处理,鲜草和干草产量分别下降10.27%和7.79%。随着刈割次数的增加,林下黑麦草粗蛋白、粗脂肪和粗灰分等营养成分含量有上升趋势,粗纤维含量有下降趋势。另外,各处理以第2茬和第3茬黑麦草干草产量和品质较高。与非林下黑麦草比较,林下黑麦草产量和品质稍有下降。本试验条件下,林下黑麦草刈割4次可兼顾高产与优质,并且适当延长第2茬和第3茬生长时间,有利于产量和品质提高。
Planting ryegrass under trees to feed poultry is a compound eco-agricultural model. To optimize the clipping mode of ryegrass planted under trees, and get high yield and quality ryegrass, in this study, ryegrass planted under trees were used as materials and clipped with different clipping times（1, 2, 3, 4, 5 times）. The growth characters, dry material accumulation, yield formation and quality of ryegrass under different treatments were compared. The results showed that： the fresh ryegrass and hay yield with clipping 4 times were thehighest, as 86.53 t/hm2 and 11.83 t/hm2, respectively. And the fresh ryegrass and hay yield with clipping 5 times decreased by 10.27% and 7.79%, respectively. With the increase of clipping times, the nutritionalcontent of cow dung, crude fat and crude ash increased gradually over time, and crude fiber content decreasedgradually. In addition, the hay yield and quality of ryegrass planted under trees of the 2 ndand 3 rdclip werehigher. Compared with ryegrass planted in grassland, the yield and quality of ryegrass planted under trees werelower. Under this experiment condition, ryegrass planted under trees with clipping 4 times could have both high yield and good quality, and the growth time of the 2 ndand 3 rdclip were extended appropriately, which could benefit high yield and good quality.
出处
《中国农学通报》
2017年第36期93-98,共6页
Chinese Agricultural Science Bulletin
基金
江苏省农业三新工程项目"林草禽生态种养循环农业模式示范推广"(SXGC[2016]211)
中央财政支农项目"双链型种养结合循环农业模式示范推广"[TG(15)110]
关键词
刈割次数
林下黑麦草
生长性状
产量
品质
clipping times
ryegrass planted under trees
growth characters
yield
quality
