| 李彩斌,周进华,唐文军,郭华春,王婷婷,杨慧菊,张光海.幼苗期遮阴对云南春作马铃薯生长和产量的影响[J].干旱地区农业研究,2018,36(3):106~112 |
| 幼苗期遮阴对云南春作马铃薯生长和产量的影响 |
| The effects of shading in seedling stage on growth and yield of spring potato in Yunnan Province |
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| DOI：10.7606/j.issn.1000-7601.2018.03.16 |
| 中文关键词: 春作马铃薯 幼苗期 遮阴 生长指标 产量 云南省 |
| 英文关键词:spring potato seedling stage shading growth index yield Yunnan Province |
| 基金项目:国家马铃薯产业体系（CARS[CD*2]10[CD*2]P21）;云南省马铃薯种业重大专项（2013ZA007） |
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| 中文摘要: |
| 通过2015～2016年两年的田间试验，用遮光率为70%的黑色遮阳网进行不同遮阴处理，其中2015年设置幼苗期遮阴处理（出苗后遮阴15d），2016年设置90d（全生育期）遮阴、前15d遮阴、前30d遮阴、前60d遮阴、后60d遮阴、中间30d遮阴、后30d遮阴7个处理，均以不遮阴作对照，研究幼苗期遮阴对云南春作马铃薯生长和产量的影响。结果表明，幼苗期遮阴能够促进马铃薯茎叶快速生长，其株高、节长和叶面积较对照分别增加179.03%、163.41%、61.68%，差异极显著。遮阴后，对茎的生长最有利，茎鲜重、茎叶鲜重和总生物量较对照分别增加286.23%、151.55%、136.66%，差异显著。两年的数据表明，幼苗期遮阴处理单株结薯数较对照增加11.67%～58.06%，单株产量较对照增加17.78%～41.05%，并有较高的商品薯重比率，2015年略低于对照，2016年较对照高4.34%。不同年份效果不一样，与遮阴期间天气有关。遮阴处理较不遮阴处理均会导致结薯减少，产量降低。 |
| 英文摘要: |
| To study the effects of shading in seedling stage on growth and yield of spring potato in Yunnan, we set up different shading treatments with black shading net of 70% shading rate in 2015~2016’s field trial. In 2015, we set up shading treatment for potato seedlings (15 d shading in early growth stage). In 2016, we set up seven shading treatments as following: 90 d shading treatment (the whole growth period), 15 d shading in early growth stage, 30 d shading in early growth stage, 60 d shading in early growth stage, 60 d shading from 30 days after germination, 30 d shading from 30 days after germination and 30 d shading from 60 days after germination. No shading treatment was used as control. The experimental results indicated that shading in seedling stage can promote stem and leaf development of potato. Compared with the control group, plant height, node length and leaf area of potato increased by 179.03%, 163.41% and 61.68% respectively, after treatment, and the differences were extremely significant. Shading, was most favorable to potato stem growth, and the stem fresh weight, stem and leaf fresh weight and total biomass increased by 286.23%, 151.55% and 136.66%, respectively, compared with CK, and the differences were significant. Two years data showed that shading treatment to potato seedling increased tuber number per plant from 11.67% to 58.06% compared with CK. The tuber yield per plant was increased from 17.78% to 41.05%. And it could maintain a comparatively higher commodity-potato-weight ratio. It was slightly lower than CK in 2015, and 4.34% higher than CK in 2016, due to the weather condition in 2015 and 2016, there were di-fferent effects on the tuber number and yield in two years. However, other shading treatments led to the declined tuber numbers and yield. |
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