Effects of Printed Seeding Straw Matrix Blocks on Population Growth of Rice Seedlings and Transplanting Quality
Received date: 2022-08-26
Online published: 2023-03-14
The differences of seedling quality, transplanting quality and yield between printing seeding straw matrix block seeding (T1), straw matrix blocks seeding (T2), and nutrient soil seeding (CK) were compared and analyzed with Ningliangyou 1 as the test variety. The results showed that 7 days after sowing, the emergence number of T1 treatment amount to 2.5 plants/cm2, which was 5.49% and 2.88% higher than T2 treatment and CK, respectively. The spacing of seedlings cultivated on T1 treatment had the minimal dispersion degree, and sowing uniformity was increased by 25.00% and 50.00% respectively compared with T2 treatment and CK. The width of stem base, rooting ability of rice seedlings and the twisting ability of seeding root system were significantly increased 0.07 mm, 0.28 cm, 0.12 kg and 0.33 mm, 0.35 cm, 1.89 kg to T1 treatment and CK. After transplanting, the missing transplanting rate and the floating seedling rate was not significantly different from T2 treatment, but 37.92% and 58.98% significantly lower than CK, the seed-setting rate was increased by 1.95% and 2.52%, the thousand-grain weight was increased by 1.56% and 2.38%，and the yield was increased by 6.27% and 7.18%, respectively. The results of this study could provide a theoretical support for the centralized and large-scale rice seedling raising and promote the process of mechanical transplanting.
Key words： rice; straw matrix block; printed seeding; seedling; sowing uniformity; seedlings quality
DU Yihan, XIAO Hongjuan, SHA Chunyang, XU Fangfu, WANG Qiujun, YONG Cheng, CHEN Ling, QU Ping, HUANG Hongying, WEI Haiyan, SUN Enhui . Effects of Printed Seeding Straw Matrix Blocks on Population Growth of Rice Seedlings and Transplanting Quality[J]. China Rice, 2023 , 29(2) : 81 -84 . DOI: 10.3969/j.issn.1006-8082.2023.02.016
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