海子1号湖南稷子高产性能的研究

A STUDY ON THE HIGH-YIELD PROPERTY OF BILLION DOLLAR GRASS

对海子1号湖南稷子(H—IBDG)的高产性能进行了研究。H—IBDG 是万力生发现的一年生禾本科上繁刈割型和草料兼用型牧草,经20多位科技工作者长达24年培育,具有产量高、耐盐、适应性强、品质优良的特性、草高180—230cm,最高250cm。区域性试验,牧草干物质,9.634Tha^(-1),太阳能利用率 E=2.25%。随着种值技术熟炼,产量越来越高,太阳能利用系数越来越大。国家单位种值,E>2.29—3.38%,农民精心种值 E=3.46—4.4%,引至区外试种多个试点的 E>3.0%,均超过世界高产人工栽培牧草 E=3.0%的水平。目前,宁夏黄灌区种植约1000ha,外省区种植约1500—2000ha,H—IBDG 叶片生长速度快,功能时间长,每个叶片的面积虽小,但单个茎蘖上的叶片数量多,中上层叶片挺直,在茎蘖上分布均匀,透光性能好。在较高密度下,叶面积指数(LAI)高达13.1,为我国北方一般农作物和牧草所不及。

This paper which is amplified from the same title paper which was presented in the proceed- ings of XVI International Grassland Congress studied the high-yield property of Haizi-1 billion dollar grass(H-1BDG)which was discovered by Mr.Wan Lisheng and can be used as forage and feed.H-1 BDG is characterized by salt-tolerance,fine forage quality and stonger adaptability. It's average height range from 180cm to 250cm,its dry matter yield is 19.634t/ha and the effi- ciency of solar energy conversion(E)is 2.25% in the field experiment.As the improvement of cul- tivated technique,the dry matter yield and E value will be more higher.The E value can get to 2.29 ～4.4% which exceeded the 3% Level of the high-yield artificial grassland of the world.At pres- ent,there are about 1000ha field which were used to plant the grass in the irrigated area in Ningxia and about 2000 ha in other provinces.The leaves of H-1 BDG grow fast and keep green for a longer time than that of other grass.Theugh the ovea of each leaf is some smaller,there are a lot of leaves on one stem and the plant community have a good ventilation and sunlight transmissiin condition because the leaves distributed enenly.If the plant density 23 higher,the leaf area index(LAI)of H-1 BDG will be as high as 13.I which 23 much higher than that of any other crops or forage in north China.