湖南农业大学学报（自然科学版）2024，Vol.50Issue(5)：1-7,7.DOI:10.13331/j.cnki.jhau.2024.05.001
硅肥对优质晚稻抗倒伏特性及产量的影响
Effect of silicon fertilizer on lodging resistance and yield of high quality late rice
摘要
Abstract
Using Taoyouxiangzhan and Yuzhenxiang of high-quality late rice as experimental materials,field tests were conducted to investigate silicon fertilization on its lodging resistance and yield.Four silicon application treatments were set up:CK,T1,T2 and T3,corresponding to silicon application amounts of 0,75,150 and 225 kg/hm2.The results showed that the basal internode breaking moment of stems increased significantly under T2 and T3 treatment compared with no silicon application,and the percentage of Taoyouxiangzhan increased by 8.96%to 11.11%,and that of Yuzhenxiang increased by 13.02%to 16.29%.The internode lodging index of late rice was significantly lower than that of no silicon treatment,and the decrease of Taoyouxiangzhan was 12.02%to 19.51%,and that of Yuzhenxiang was 12.68%to 22.31%.The application of silicon fertilizer could improve the morphology of the upper three leaves and increase the silicon content in stems with the percentage of Taoyouxiangzhan increased by 2.01%to 23.27%and the percentage of Yuzhenxiang increased by 1.19%to 11.33%.In addition,silicon application could increase the yield with T1 application showing the best yield increase effect.The actual yields of T1 of Taoyouxiangzhan and Yuzhenxiang increased by 6.81%and 11.95%respectively compared to the CK.Considering that there was no substantial lodging in the current season during this experiment,combined with the yield and cost-effectiveness,the recommended silicon application amounts for the test varieties Taoyouxiangzhan and Yuzhenxiang were 75 kg/hm2.关键词
优质晚稻/硅肥/倒伏性状/产量Key words
high quality late rice/silicon fertilizer/lodging character/yield分类
农业科技引用本文复制引用
郭荟,方希林,方畅宇,杨宁俊,陈威,邹燕,谭珣,雷苑,屠乃美..硅肥对优质晚稻抗倒伏特性及产量的影响[J].湖南农业大学学报（自然科学版）,2024,50(5):1-7,7.基金项目
农业部公益性行业(农业)科研专项(201503123) （农业）
