林下套种墨西哥玉米草的营养价值研究  

Nutritional values of interplanting Zea diploperennis in forest under-story

作　　者：陈丽莉[1] 陈斌[2] 刘兴锋 罗迎社[2] 谷振军[2] 张党权[1,4] 

机构地区：[1]中南林业科技大学林业生物技术湖南省重点实验室,湖南长沙410004 [2]中南林业科技大学流变力学与材料工程研究所,湖南长沙410004 [3]湘西州林业科学研究所,湖南吉首416000 [4]中南林业科技大学经济林育种与栽培国家林业局重点实验室,湖南长沙410004

出　　处：《中南林业科技大学学报》2013年第12期27-31,共5页Journal of Central South University of Forestry & Technology

基　　金：国家林业公益性行业科研专项(201204610)

摘　　要：近年来我国可用林地逐渐减少,开发林下经济作物是缓解这一矛盾的新兴发展方向。以此为背景,采用饲用牧草与小乔木的套种技术,于油茶林下种植墨西哥玉米草,并分析2个不同生长时期玉米草中粗蛋白、有机质等9种营养物质含量的差别。林下种植中等生长期墨西哥玉米草与短生长期玉米草的水分及挥发物含量分别为14.91%和12.87%,粗灰分含量分别为5.11%和5.45%,钙含量分别为0.26%和0.33%,磷含量分别为0.23%和0.26%,粗脂肪含量分别为13.41 g/kg和19.29 g/kg,粗纤维含量分别为284.55 g/kg和235.28 g/kg,干物质含量分别为85.09%和87.13%,有机质含量分别为94.90%和94.55%,粗蛋白含量分别为7.0%和12.87%。分析结果表明,林下种植的玉米草营养物质含量与传统种植的玉米草营养物质含量没有显著差别,并且短生长期的玉米草的饲用价值要高于中等生长期玉米草。In recent years, the forests were reduced gradually in our country, so, the development of under-story economic crops becomes the new direction to solve this problem. Based on this background, the Zea diploperennis were inter-planted in Camellia oleifera forest by the inter-planting technique of combination of forage grass and small trees. And the differences of the nutrient contents including crude protein, organic matters, moisture and volatile matter, crude ash, calcium, phosphorus, crude fat, crude fiber and dry weight between two growing stages of inter-planting Zea diploperennis were investigated. The moisture and volatile matter contents ofZea diploperennis in the medium growing stage and the young growing stage were 14.91% and 12.87%. The crude ash contents of Zea diploperennis in the medium growing stage and the young growing stage were 5.11% and 5.45%. The calcium contents of of Zea diploperennis in the medium growing stage and the young growing stage were 0.26% and 0.33%. The phosphorus contents of Zea diploperennis in the medium growing stage and the young growing stage were 0.23% and 0.26%. The crude fat contents of of Zea diploperennis in the medium growing stage and the young growing stage were 13.41 g/kg and 19.29 g/kg. The crude fiber contents of of Zea diploperennis in the medium growing stage and the young growing stage were 284.55 g/kg and 235.28 g/kg. The dry weight contents ofZea diploperennis in the medium growing stage and the young growing stage were 85.09% and 87.13%. The organic matter contents of Zea diploperennis in the medium growing stage and the young growing stage were 94.90% and 94.55%. The crude protein contents ofofZea diploperennis in the medium growing stage and the young growing stage were 7.0% and 12.87%. The nutrition contents were not significant differencee between the inter-planting Zea diploperennis and the traditional planting. And the results show that the young growing stage Zea diploperennis had higher forage value than the medium growing stage Zea diploperennis.

关 键 词：林下经济作物 林下套种 林下饲草 墨西哥玉米草 营养价值 

分 类 号：S788[农业科学—林学]