湖南农业科学Issue(5)：12-15,4.DOI:10.16498/j.cnki.hnnykx.2025.005.003
播期和秧龄对镉低吸收晚稻产量及各部位镉含量的影响
Effects of Sowing Date and Seedling Age on the Yield and Cadmium Content in Various Parts of a Late Rice Variety with Low Cadmium Absorption
摘要
Abstract
This study aims to clarify the effects of sowing date and seedling age on the yield and cadmium accumulation characteristics of the late rice variety'Qingliansimiao'.A single-factor randomized block design was adopted.The yields and cadmium content under three sowing dates(June 19,June 27,and July 5)and three seedling ages(22,27,and 32 days)were measured.The results are described as follows.(1)Sowing date significantly affected the rice yield and cadmium content.The yield was higher in the case of sowing in mid-to-late June but significantly decreased in the case of sowing in early July.The main factors affecting the rice yield were the number of grain per ear and seed setting rate.The cadmium accumulation in various parts was significantly reduced under early sowing treatment.(2)There was no significant difference in yield among different seedling ages,and the seedlings of a wide range of ages were suitable.The cadmium content was low in various parts in the seedling age group of 22 days.In the seedling age group of 32 days,although the cadmium content in brown rice was lower,that in stems,leaves,and husks was higher.Therefore,early sowing in mid-to-late June combined with a seedling age of about 22 days is conducive to ensuring the yield while reducing the cadmium accumulation of'Qingliansimiao'.关键词
播期/秧龄/产量/镉含量/晚稻Key words
sowing date/seedling age/yield/cadmium content/late rice分类
农业科技引用本文复制引用
向军,罗双圆,郭萍,周雯,杨德胜,郑华斌,王慰亲,唐启源..播期和秧龄对镉低吸收晚稻产量及各部位镉含量的影响[J].湖南农业科学,2025,(5):12-15,4.基金项目
国家水稻产业体系岗位专家项目(CARS-01-27) （CARS-01-27）
