胡萝卜(Daucus carota L.)疏苗关键期

Gagopale Bosekeng
{"title":"胡萝卜(Daucus carota L.)疏苗关键期","authors":"Gagopale Bosekeng","doi":"10.12691/WJAR-7-1-2","DOIUrl":null,"url":null,"abstract":"Field experiment was carried out at Impala Research station, in Botswana, aiming at investigating critical period for thinning of carrot (Daucus carota L.). The experiment was laid out in a complete randomized block design (CRBD), replicated three times and was repeated four times at different sowing dates. Seeds were sown at the same rate (3 kg ha-1) in all plots to obtain an equal plant population at initial stage, thereafter thinned at different times (2nd, 3rd, 4th, 5th and 6th weeks after emergence) to 30 cm between rows and 5 cm between intra rows to maintain constant population across the experiment. Days to maturity were constant from sowing to harvest in all the sowing dates. Plant height and yield significantly declined as thinning time was delayed. Number of leaves developed, root diameter and root length were not influenced by the thinning time. Vegetative growth and yield declined with the late sown experiments. It can be concluded that thinning time significantly increase plant height and yield, especially at earlier stages and carrot yield best when sown earlier in the season.","PeriodicalId":23702,"journal":{"name":"World Journal of Agricultural Research","volume":"34 1","pages":""},"PeriodicalIF":0.0000,"publicationDate":"2019-01-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"1","resultStr":"{\"title\":\"The Critical Period for Thinning Carrot (Daucus carota L.)\",\"authors\":\"Gagopale Bosekeng\",\"doi\":\"10.12691/WJAR-7-1-2\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"Field experiment was carried out at Impala Research station, in Botswana, aiming at investigating critical period for thinning of carrot (Daucus carota L.). The experiment was laid out in a complete randomized block design (CRBD), replicated three times and was repeated four times at different sowing dates. Seeds were sown at the same rate (3 kg ha-1) in all plots to obtain an equal plant population at initial stage, thereafter thinned at different times (2nd, 3rd, 4th, 5th and 6th weeks after emergence) to 30 cm between rows and 5 cm between intra rows to maintain constant population across the experiment. Days to maturity were constant from sowing to harvest in all the sowing dates. Plant height and yield significantly declined as thinning time was delayed. Number of leaves developed, root diameter and root length were not influenced by the thinning time. Vegetative growth and yield declined with the late sown experiments. It can be concluded that thinning time significantly increase plant height and yield, especially at earlier stages and carrot yield best when sown earlier in the season.\",\"PeriodicalId\":23702,\"journal\":{\"name\":\"World Journal of Agricultural Research\",\"volume\":\"34 1\",\"pages\":\"\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2019-01-10\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"1\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"World Journal of Agricultural Research\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.12691/WJAR-7-1-2\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"World Journal of Agricultural Research","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.12691/WJAR-7-1-2","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 1

摘要

在博茨瓦纳的Impala研究站进行了田间试验,目的是调查胡萝卜(Daucus carota L.)疏苗的关键时期。试验采用完全随机区组设计(CRBD),重复3次,不同播期重复4次。在所有地块以相同的播种速率(3 kg hm -1)播种,以获得初始阶段相等的植株数量,然后在不同时间(出苗后第2、3、4、5和6周)疏播至行间30 cm和行内5 cm,以保持整个试验期间的恒定种群数量。在所有播种期,从播种到收获的成熟期都是恒定的。随着间伐时间的推迟,株高和产量显著下降。叶片发育数、根径和根长不受间伐时间的影响。营养生长和产量随晚播试验而下降。由此可见,间伐时间显著提高了株高和产量,特别是在早期,胡萝卜产量在季节早期播种时最好。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
The Critical Period for Thinning Carrot (Daucus carota L.)
Field experiment was carried out at Impala Research station, in Botswana, aiming at investigating critical period for thinning of carrot (Daucus carota L.). The experiment was laid out in a complete randomized block design (CRBD), replicated three times and was repeated four times at different sowing dates. Seeds were sown at the same rate (3 kg ha-1) in all plots to obtain an equal plant population at initial stage, thereafter thinned at different times (2nd, 3rd, 4th, 5th and 6th weeks after emergence) to 30 cm between rows and 5 cm between intra rows to maintain constant population across the experiment. Days to maturity were constant from sowing to harvest in all the sowing dates. Plant height and yield significantly declined as thinning time was delayed. Number of leaves developed, root diameter and root length were not influenced by the thinning time. Vegetative growth and yield declined with the late sown experiments. It can be concluded that thinning time significantly increase plant height and yield, especially at earlier stages and carrot yield best when sown earlier in the season.
求助全文
通过发布文献求助,成功后即可免费获取论文全文。 去求助
来源期刊
自引率
0.00%
发文量
0
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
提示
您的信息不完整,为了账户安全,请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
确定
请完成安全验证×
copy
已复制链接
快去分享给好友吧!
我知道了
右上角分享
点击右上角分享
0
联系我们:info@booksci.cn Book学术提供免费学术资源搜索服务,方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。 Copyright © 2023 布克学术 All rights reserved.
京ICP备2023020795号-1
ghs 京公网安备 11010802042870号
Book学术文献互助
Book学术文献互助群
群 号:481959085
Book学术官方微信