美国籽粒苋在黔中低中山地区的适应性研究

STUDY ON ADAPTABILITY OF AMERICAN A.PANICULATUSL.IN LOW AND MIDDLE MOUNTAINOUS AREAS OF CENTRAL GUIZHOU

引种５个美国籽粒苋品种Ｋ＿(１１２)、Ｒ＿＿(１０４)、ＮＯ＿１、ＮＯ＿２、ＮＯ＿３。表现以育苗移栽最好，在阴雨天移植，每月可刈割１次，日生长速度以Ｒ＿(１０４)（１．２９ｃｍ／ｄ）最快，显著高于ＮＯ＿３和Ｋ＿(１１２)，与ＮＯ＿１和ＮＯ＿２无差异，刈割后品种间再生速度无差异，鲜草产量以Ｒ(１０４)最高，亩产６０３６ｋｇ，显著高于Ｋ＿(１１２)、ＮＯ＿１、ＮＯ＿２和ＮＯ＿３，种子产量以Ｋ＿(１１２)最高，亩产５１３ｋｇ，显著高于Ｒ＿(１０４)、ＮＯ＿２和ＮＯ＿３，而与ＮＯ＿１无差异。籽粒苋在贵州有很好的推广价值。

species of Amaranthus paniculatus L.introduced from the U.S.A.,including K112,K104,NO1,NO2and NO3 have been planted experimentally in low and middle mountainous areas of central Guizhou province.The cultivation results show that it is best for them to be transplanted during cloudy and rainy days. All ofthem could be cut once a month amd their growth speed shows no difference,of them,R104 grew more fast(1.29 cm/d)than that of No3 nd K112 but had on difference with NO2 and NO1.The yield of fresh grass ofR104 is 6036 kg/mu,remarkably higher than that of K112, No1,No2 and No3.The seed yield of K112 obtained513 kg/mu,slgnificantly higher than that of R104,No2 and No3,but no difference with No1,It is valuable taextend in Guizhou province.