行距和密度对顺根甜菜的影响

J. Theurer, J. Saunders
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引用次数: 3

摘要

1988 ~ 1990年,对顺根型甜菜与标准商品品种在不同行距和密度下的农艺学性能进行了比较。本试验比较了商品品种MH E-4和ACH 176在植株密度约为69200株时的平根型SR 87和87H1-00;96800;还有79100株植物。单株间距分别为71厘米(行间)× 20厘米(行内植株之间)、56厘米× 20厘米和46厘米× 46厘米。在1989年的第二次试验中,将SR 87与MH E-4在71 × 30 cm、56 × 30 cm、46 × 30 cm、71 × 15 cm、56 × 15 cm和46 × 15 cm 6个株距上进行比较。该实验于1990年重复,采用了6个外加2个额外的植物密度,51 x 30 cm和51 x 15 cm。尽管SR甜菜的纤维根系统与今天的标准根类型不同,但与目前常规的71厘米行宽相比,在较高的植物密度下,在狭窄的行中种植SR植物没有不利影响。顺根甜菜基因型对不同环境下植株密度的响应与适应标准根商品品种相似。种植密度为71,760株/ m2(46行宽× 30 cm株距)时,甜菜的SR生产力得到提高。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Row Spacing and Plant Density Effects on Smooth Root Sugarbeets
Agronomic performance of smooth root (SR) type sugarbeet genotypes was compared with that of standard commercial cultivars under different row spacings and plant densities during the years 1988-1990. In one experiment smooth root types SR 87 and 87H1-00 were compared with commercial cultivars MH E-4 and ACH 176 in plant population densities of approximately 69,200 ; 96,800 ; and 79,100 plants ha-'. Individual plant spacings were 71 cm (between rows) x 20 cm (between plants within rows), 56 x 20 cm, and 46 x 46 cm respectively. In a second experiment in 1989, SR 87 was compared with MH E-4 at six plant spacings of 71 x 30 cm, 56 x 30 cm, 46 x 30 cm, 71 x 15 cm, 56 x 15 cm, and 46 x 15 cm. This experiment was repeated in 1990 with these six plus two additional plant densities, 51 x 30 cm and 51 x 15 cm. Although SR sugarbeets have a different fibrous root system than today's standard root type, there were no adverse effects of SR plants when grown in narrow rows under higher plant densities compared with present conventional 71 cm row width. Smooth root sugarbeet genotypes responded to plant density in different environments similarly to adapted standard root commercial cultivars. SR productivity was enhanced when sugarbeets were grown at the higher density of 71,760 plants ha -1 (46 row width x 30 cm plant spacing).
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