摘要
【目的】筛选出新疆甜菜主栽品种,在膜下滴灌条件下与机械作业相配套的最佳密度。【方法】采用行距固定改变株距的密度方式,进行6个密度水平3次重复的小区试验。【结果】叶面积指数在生育前期,随着密度的增加呈增长趋势,在生育中后期叶面积指数呈下降趋势,密度越大下降越快;干物质积累以10×10~4株/hm^2处理取得最大单位面积干物质积累量、产量及含糖率。随密度的增大而增加,但是密度超过10×10~4~11×10~4株/hm2时,产量及含糖率则表现出下降的趋势。【结论】在新疆甜菜机械化播种地区,甜菜适宜栽培密度为10×10~4株/hm^2,此密度下可以取得较高产量和品质。
【Objective】To screen out the optimum density of Xinjiang beet cultivars under drip irrigation and mechanical work conditions.【Method】Six density levels with 3 times repeated plot trials were conducted through changing the plant spacing under fixed row spacing.【Result】In early growth stage,leaf area index increased with the increasing density. In the latter part of growth,leaf area index showed a downward trend,the greater the density,the faster the fall. Dry matter accumulation per unit area got the maximum when the density was 100,000/hm^2. The yield and sugar content increased with increasing density,but when the density was more than 100- 110 thousand/hm^2,the yield and the sugar content showed a downward trend【Conclusion】In Xinjiang mechanized areas,the suitable planting density of beet is 100,000/hm^2,under which a higher yield and quality can be achieved.
出处
《新疆农业科学》
CAS
CSCD
北大核心
2016年第7期1245-1250,共6页
Xinjiang Agricultural Sciences
基金
现代农业产业技术体系建设专项资金(CARS-210410)~~
关键词
甜菜
密度
产量
含糖率
beet
density
yield
sugar content
