摘要
宁夏中南部地区是宁夏主要的马铃薯种植基地,近年来该区由于马铃薯产业的不断发展和环境气候的逐渐改变,马铃薯双垄全膜覆盖沟播栽培已开始较大面积推广。因此,针对宁夏中南部地区不同土壤肥力及气候条件,不同地区选用当地的主栽品种(南部山区为‘陇薯3号’,中部干旱带为‘虎头’),布置了马铃薯不同种植密度试验。结果表明,宁夏中南部地区马铃薯双垄全膜覆盖种植密度的高低与其生育期、商品薯率及产量间均存在较大的关系。从马铃薯生育期、商品薯率和产量综合因素来看,宁夏南部山区和中部干旱带马铃薯适宜栽培的密度分别为3 500～4 000株/667 m2和2 000～2 500株/667 m2,通过函数拟合发现,宁夏南部山区马铃薯种植高产的密度为3 612株/667 m2,中部干旱带为2 564株/667 m2。
South-central area of Ningxia province is the main planting base of potatoes. Due to the continuous development of potato industry and environmental and climatic changes, the potato planting technology of double ridges mulching was widely extended in this area. According to the differences of soil fertility, climatic conditions in south-central area, the experiment with different planting densities of potato was conducted in different testing sites, and local main cultivars were adopted （＇Longshu 3＇ was used in southern mountainous area, and ＇Hutou＇ in central arid area）. The results indicated that, under the planting mode of double ridges mulching, the planting density of potato had close relationship with its growth period, commodity potato rate and yield. Comprehensively considered these indexes, the suitable planting density of potato was 3 500-4 000 hi11/667 m2 and 2 000-2 500 hi11/667 m2, respectively, in southern mountainous area and central add area. By function fitting, the highest yield of potato was demonstrated for southern mountainous area and central arid area of Ningxia province, which was 3 612 hill/667 m2 and 2 564 hi11/667 m2, respectively.
出处
《中国马铃薯》
2012年第6期350-353,共4页
Chinese Potato Journal
基金
国家科技支撑计划课题(2009BADC5B05)
关键词
宁夏
马铃薯
双垄全膜覆盖
密度
Ningxia province
potato
double-ridge mulching
density
