中美耐盐禾草建植和产量试验

Establishment and Forage Yield Evaluation of Chinese and North American Grasses on Saline Site.

对选自中国和美国的２８份多年生耐盐禾草在内蒙古河套灌溉区盐渍荒地上进行的建植和产量试验结果表明，在表土含盐量为０．５４％～０．７２％、ｐＨ值为８．９～９．４的盐渍土中，引自美国的高薄冰草品种Ｔｙｒｅｌ、Ｊｏｓｅ、Ｌａｒｇｏ、Ａｌｋａｒ和中国的野大麦生长良好，建植率为５７％～８０％，干草产量为４７００～６９００ｋｇ／ｈｍ２；美国的阿尔泰赖草Ｐｒａｉｒｉｅｌａｎｄ、卡氏赖草Ｌｏｇｏｎ’ｓ、细披碱草Ｐｒｙｏｒ、ＳａｎＬｕｉｓ、西方牧冰草Ｒｏｓａｎａ、Ｂａｒｔｏｎ、Ａｒｒｉｂａ、杂交偃麦草ＲＳ－Ｈｏｆｍａｎ、ＲＳＴ－ｈｙｂｒｉｄ以及中国的羊草ＬＥＣＨ２等品种／材料也可建植成功，并获得较高的牧草产量。

Twenty-eight perennial grass entries (5 Chinese collections and 23 American cultivars) were evaluated for establishment and forage yield on saline site in the Yellow River irrigated area, Inner Mongolia. Results showed that on the site that surface 10cm contained 0.54%～0.72% salt with pH 8.9～9.4, American cultivars, Tyrell, Jose, Largo and Alkar Thinopyum ponticum and one native collection, Hordeum brevisubulatum grew well, with 57%～80% stands surviral and 4700～6900kg/hm 2 air-dry forage yields. American cultivars Prairieland Leymus angustus, Logon’s Leymus karelinnii, Pryor, San Luis Elymus trachycaulus, Rosana, Barton, Arriba Pascopyrum smithii, RS-Hoffman, RST-hybrid Elytrigia repens×Pseudoroegneria, and a native collection LECH2 Leymus chinensis established stands and had high forage yields.