Effects of Sowing Densities on Lodging Resistance, Yields and Quality of Rice under Mechanical Strip Sowing Mode
1st author: 541807274@qq.com
Received date: 2024-08-27
Online published: 2025-03-12
To investigate the effects of sowing density on lodging resistance, yield, yield formation and quality of rice under mechanical strip sowing mode, the experiment were conducted using conventional japonica rice varieties Nangeng 9108 and Nangeng 5718 as materials, with five sowing densities set for each variety, namely 90.0, 112.5, 135.0, 157.5, and 180.0 kg/hm2. The results showed that with the increase of sowing density, the number of tillers and effective ears increased, while the plant height, ear length, and bending resistance decreased, the yield first increased and then decreased. With the increase of sowing density, the brown rice rate, polished rice rate, and whole polished rice rate first increased and then decreased, while the protein content first decreased and then increased. Nangeng 9108 and Nangeng 5718 achieved their highest yields at sowing densities of 112.5 kg/hm2 and 135.0 kg/hm2, respectively. The yield and appearance quality of Nangeng 5718 were better than those of Nangeng 9108, but the processing quality and taste were not as good as those of Nangeng 9108.
Key words： rice; mechanical drill seeding; sowing density; yield; lodging resistance; rice quality
ZHANG Yan, CHEN Jingdu, XIN Haibin, TANG Jianpeng, LIU Cuilian, FAN Xiaokai . Effects of Sowing Densities on Lodging Resistance, Yields and Quality of Rice under Mechanical Strip Sowing Mode[J]. China Rice, 2025 , 31(2) : 97 -101 . DOI: 10.3969/j.issn.1006-8082.2025.02.017
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