浙江农业科学 ›› 2025, Vol. 66 ›› Issue (6): 1308-1314.DOI: 10.16178/j.issn.0528-9017.20250034

• 粮食作物 • 上一篇    下一篇

不同品种和移栽密度对滨海盐碱地水稻耐盐性、根系和产量的影响

干莹莹1(), 裘高扬2, 郭彬2, 傅庆林2,*(), 张君波2, 刘俊丽2, 陈晓冬2   

  1. 1.浙江恒海农业科技集团有限公司,浙江 慈溪 315300
    2.浙江省农业科学院 环境资源与土壤肥料研究所,浙江 杭州 310021
  • 收稿日期:2025-01-14 出版日期:2025-06-11 发布日期:2025-06-23
  • 通讯作者: 傅庆林(1963—),男,浙江东阳人,研究员,博士,主要从事土壤改良与生态修复研究,E-mail:fuql161@aliyun.com
  • 作者简介:干莹莹(1978—),女,浙江宁波人,农艺师,学士,从事滨海盐土改良与利用研究,E-mail: ganyy126@126.com
  • 基金资助:
    浙江省重点研发计划(2019C02008);农业部公益性行业(农业)科研专项(201503118-12)

Effects of different varieties and transplanting densities on salt tolerance, root system, and yield of rice in coastal saline-alkali land

GAN Yingying1(), QIU Gaoyang2, GUO Bin2, FU Qinglin2,*(), ZHANG Junbo2, LIU Junli2, CHEN Xiaodong2   

  1. 1. Zhejiang Henghai Agricultural Technology Group Co., Ltd., Cixi 315300, Zhejiang
    2. Institute of Environment, Resources, Soil and Fertilizer, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, Zhejiang
  • Received:2025-01-14 Online:2025-06-11 Published:2025-06-23

摘要:

在杭州湾滨海盐碱地,以粤优938、中优208和协优205等3个水稻品种为材料,探讨不同品种与移栽密度对水稻的耐盐性、根系分布和产量的影响。结果表明,经6 g·L-1 NaCl溶液处理后,粤优938、中优208和协优205等3个水稻品种根的耐盐性指数大于70%,芽的耐盐性指数大于80%;经10 g·L-1 NaCl溶液处理后只有协优205根的耐盐性指数大于60%,同时芽的耐盐性指数大于70%,由此认定协优205为耐盐品种。在水稻基本苗数为15万、30万、45万、60万株·hm-2的4个移栽密度下,45万株·hm-2基本苗数下的根系生物量、根长密度和稻谷产量均为最高。因此,协优205是杭州湾滨海盐碱地适宜种植的水稻品种,其适宜栽插的基本苗数为45万·hm-2

关键词: 水稻品种, 移栽密度, 耐盐性, 根系, 滨海盐碱地

Abstract:

The effects of 3 rice varieties(Yueyou 938, Zhongyou 208 and Xieyou 205) and transplanting density on salt tolerance, root distribution and yield of rice were studied in Hangzhou Bay coastal saline-alkali land. The results showed that after treatment with 6 g·L-1 NaCl solution, the salt tolerance index of root of Yueyou 938, Zhongyou 208 and Xieyou 205 was greater than 70%, and the salt tolerance index of bud was greater than 80%. After treatment with 10 g·L-1 NaCl solution, only the salt tolerance index of root of Xieyou 205 was greater than 60%, while the salt tolerance index of buds was greater than 70%, so Xieyou 205 was identified as a salt-tolerant variety. The root biomass, root length density and rice yield were the highest with the basic seedling number of 450 000 per hm2 when the basic seedling number was 150 000, 300 000, 450 000 and 600 000 seedlings per hm2. Therefore, Xieyou 205 is a suitable rice variety for planting in Hangzhou Bay coastal saline-alkali land, and the basic number of seedlings suitable for planting is 450 000 per hm2.

Key words: rice varieties, transplanting density, salt tolerance, root, coastal saline-alkali land

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