摘要
2014年和2015年分别以尤金和克新13号脱毒原种为供试材料,采用随机区组设计,分别设置6万穴/hm^2、9万穴/hm^2、12万穴/hm^2播种穴数和1、3个主茎/穴(2014年)以及6万穴/hm^2、8万穴/hm^2、10万穴/hm^2播种穴数和1、2个主茎/穴(2015年)等处理,研究密度调控方式对马铃薯块茎大小分布及产量的影响。两年试验结果表明:增加播种穴数或单穴主茎数都将增加30~150 g的块茎产量,降低150 g以上的块茎产量。早熟品种尤金的种薯生产采用12万穴/hm^2、3主茎/穴的播种方式,并于苗后60 d左右收获,可获得较高150 g以下块茎产量;商品薯生产采用6万穴/hm^2、3主茎/穴的播种方式可获得较高商品薯产量。中晚熟品种克新13号的种薯生产采用8万穴/hm^2、2主茎/穴的播种方式,苗后80 d左右收获,可获得较高150 g以下块茎产量;商品薯生产采用6万穴/hm^2、2主茎/穴的播种方式可获得较高商品薯产量。
Field experiments were conducted to study the effect of density control method on the potato tuber size distribution. The planting density of 60 000, 90 000 and 120 000 holes/hm2 with 1 or 3 stems per hole were conducted with the variety of Youjin in 2014, and the planting density of 60 000, 80 000 and 100 000 holes/hm2 with 1 or 2 stems per hole were conducted with the variety of Kexin 13 in 2015 respectively. The yield of tubers of the grade 30–150 g increased by increasing the planting density or increasing stems, while the yield of tubers of the grade over 150 g decreased. To early maturing variety of Youjin, the planting density of 120 000 holes/hm2 with 3 stems per hole and harvest at 60 d after emergence was suitable for seed potatoes production, while 60 000 holes/hm2 with 3 stems per hole suitable for marketable tuber production. To late-maturing variety of Kexin 13, the planting density of 80 000 holes/hm2 with 2 stems per hole and harvest at 80 d was suitable for seed potatoes production and 60 000 holds/hm2 with 2 stems per hole suitable for marketable tuber production.
出处
《土壤》
CAS
CSCD
北大核心
2017年第3期635-640,共6页
Soils
基金
黑龙江省教育厅面上项目(12541034)
"十二五"农村领域国家科技计划课题项目(2012BAD06B02)资助
关键词
马铃薯
播种穴数
主茎数
密度调控
块茎大小
Potato
Planting density
Stem number
Density regulation
Tuber set
