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| DOI：10.13522/j.cnki.ggps.20190123 |
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| The Effects of Seedling-fertilizer and Seedling-water-layer on Grain Yield and Seedling Growth of Ratooning Rice |
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ZOU Dan, TANG Qiyuan, ZHENG Huabin, ZHOU Wei, CHAO Ying, ZHANG Xiang, LUO Youyi
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College of Agronomy, Hunan Agricultural University, Changsha 410128, China
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| Abstract: |
| 【Objective】In order to explore the effects of seedling-fertilizer and seedling-water- layer on grain yield and the sprout of axillary bud of ratooning rice. 【Method】 “Huanghuazhan” was took as the experimental material . The four seedling-fertilizers (fertilizing at two days after harvest of the main crop; Urea F0:0 kg/hm2，F1:112.5 kg/hm2 ，F2:225 kg/hm2) and three seedling-water-layers (water layer in the field within 15 days after harvest of the main crop; W0:0 cm, W1:2 cm, W2:4 cm, W3:6 cm) were designed as a split test.【Result】The seedling pile ratio (seedlings/rice piles), the number of regenerated seedlings and yield of F1, F2 are significantly higher than of F0, the amount of rise were 6.71%~9.40%、10.87%~15.33% and 19.33%~20.20% respectively. The panicle pile ratio (panicles at heading /rice piles) of F2 and F1 were higher than of F0, and F2 was significantly higher than F0. The seedling pile ratio (seedling/rice pile), the number of regenerated seedlings and yield of W1, W2 and W3 were all higher than the W0, and the yield of W2 was significantly higher than the W0, the amount of rise are 13.88%. Seedling-fertilizer and Seedling-water-layer all could improve the environment of axillary bud sprout in ratoon rice, increase the speed and quantity of axillary bud sprout. But the effect of Seedling-fertilizer was more significant.【Conclusion】Seedling-water-layer can increase axillary bud sprout and yield to a certain extent in ratoon rice of Huanghuazhan. But Seedling-fertilizer can increase the bud sprout and the yield observably. The treatment of W2F1 get the biggest composite beneficial result under the fertilizer and water layer of coupling. |
| Key words: ratooning rice; seedling-fertilizer; seedling-water-layer; yield; ability of seedling |
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