马铃薯紫花851不同种植密度对群体结构的影响试验  

Effects of different plant densities on the population structure of potato variety Zihua 851

作　　者：郭阿安 

机构地区：[1]龙岩市新罗区曹溪镇农技站,福建龙岩364000

出　　处：《广西农业科学》2010年第8期766-768,共3页Guangxi Agricultural Sciences

基　　金：福建省粮食科技重大专项(二期)专题五资助(2008NJ0001-1)

摘　　要：以马铃薯新品种紫花851为试验材料,研究不同种植密度对其群体结构的影响。结果表明,紫花851种植密度为52500株/ha时商品薯产量最高,达29850 kg/ha;种植密度为75000株/ha时单位面积结薯数最多,达62.4个/m2;最佳生理质量指标为:出苗后65 d叶面积指数2.40～2.55、出苗后80 d干物质积累量5373 kg/ha。因此,紫花851作商品薯生产时,最适种植密度为52500株/ha;作种薯生产时,最适种植密度为75000株/ha。The present experiment has been conducted to study the effects of different plant densities on the population structure of potato variety Zihua 851.The results showed that the commercial tuber yield of Zihua 851 treated with planting density 52500 plants/ha reached the highest（29850 kg/ha）,however,treatment with planting density 75000 plants/ha showed the maximum tubers/unit area（62.4 tubers/m2）.The optimum physiological quality indices were as follows： 2.40-2.55 leaf area index（LAI） at 65 days after emergence and 5373 kg/ha dry matter at 80 days after emergence.Therefore,it was found that the planting densities 75000 and 52500 plants/ha were suitable for commercial and seed tuber production,respectively,for Zihua 851 variety.

关 键 词：紫花851 种植密度 产量 单位面积结薯数 叶面积指数 干物质积累量 

分 类 号：S532.044[农业科学—作物学]