摘要
为研究施氮量对红米杂交稻产量、氮肥利用率的影响,2024年在福建省南安市进行大田试验,以红米杂交稻神农优红丝苗为材料,设置0(CL1,CK)、150(CL2)、165(CL3)、180(CL4)、195(CL5)kg·hm^(−2) 5个施氮量水平,测定不同处理下红米杂交稻产量、株高、有效穗数、每穗粒数及结实率。结果表明:红米杂交稻的稻谷产量随着氮肥用量的增加而增加,不同氮肥处理水平对水稻株高、有效穗数及结实率均有影响。当氮肥用量为180.0 kg·hm^(−2)时,水稻产量最高,氮肥农学效率最高;水稻氮肥利用率随着氮肥施用量的增加而降低。结果显示红米杂交稻神农优红丝苗施氮量为180.0 kg·hm^(−2)时,在种植时可实现高产与氮肥高效利用。
In order to study the effect of nitrogen application rate on the yield and nitrogen use efficiency of the hybrids of red rice,a field experiment was carried out in Nan’an City of Fujian Province in 2024.By taking the hybrids of red rice‘Shennong Youhong Simiao’as the experimental material,five nitrogen fertilizer application rate levels of 0(CL1,CK),150(CL2),165(CL3),180(CL4)and 195(CL5)kg·hm^(−2) were set up to determine the yield,plant height,effective panicle number,grain number per panicle and seed set propagation coefficient of the hybrids of red rice under different treatments.The yield of the hybrids of red rice increased with the increase of nitrogen fertilizer application rate,and different nitrogen fertilizer treatment levels had effects on plant height,effective panicle number and seed set propagation coefficient of rice.When the nitrogen fertilizer application rate was 180.0 kg·hm^(−2),the rice yield was the highest and the agronomic efficiency of nitrogen fertilizer was also the highest.The nitrogen use efficiency of rice decreased with the increase of nitrogen fertilizer application rate.The results showed that when the nitrogen fertilizer application rate of the hybrids of red rice‘Shennong Youhong Simiao’was 180.0 kg·hm^(−2),the high yield and efficient utilization of nitrogen fertilizer could be achieved during planting.
作者
张玉珍
ZHANG Yu-zhen(Nan’an Planting Industry Service Center,Quanzhou,Fujian 362300,China)
出处
《福建农业科技》
2024年第12期17-21,共5页
Fujian Agricultural Science and Technology
基金
2024年福建省农业种质资源保护与利用项目(闽财农指〔2023〕94号)。
关键词
红米杂交稻
施氮量
产量
氮肥利用率
Hybrids of red rice
Nitrogen fertilizer application rate
Yield
Nitrogen utilization rate
作者简介
张玉珍,女,1980年生,农艺师,主要从事基层农业技术推广。
