摘要
【目的】探究再生稻发苗肥施量与发苗水层。【方法】以黄华占为试验材料,对发苗肥(头季收获后2 d撒施的肥料;尿素F0:0 kg/hm^2、F1:112.5 kg/hm^2、F2:225 kg/hm^2)和发苗水层(头季收割后15 d内田间的水层;W0:0 cm、W1:2 cm、W2:4 cm、W3:6 cm)进行裂区试验。【结果】F1、F2处理的苗桩比(再生苗数/稻桩数)、再生苗数、再生季产量均显著高于F0,涨幅分别为6.71%~9.40%、10.87%~15.33%、19.33%^20.20%。穗桩比(齐穗期穗数/稻桩数)表现为F2、F1处理均高于F0处理,其中F2处理显著高于F0处理。W2处理的穗桩比最高,W1、W2、W3处理的苗桩比、再生苗数、再生季产量均高于W0处理,其中W2处理的产量比W0处理高13.88%,达到显著水平。发苗肥和发苗水层均能改善再生季发苗环境,提高出苗速度和数量,但是发苗肥的作用更加显著。【结论】发苗水层对黄华占再生季发苗和产量均有一定程度的提高,发苗肥能显著提高黄华占再生季发苗和产量,水肥耦合效应下W2F1处理综合效益最佳。
【Objective】The purpose of this paper is to explore the effects of seedling-fertilizer and seedling-waterlayer 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/hm^2, F1:112.5 kg/hm^2, F2:225 kg/hm^2) 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 W2 F1 get the biggest composite beneficial result under the fertilizer and water layer of coupling.
作者
邹丹
唐启源
郑华斌
周蔚
巢英
张相
罗友谊
ZOU Dan;TANG Qiyuan;ZHENG Huabin;ZHOUWei;CHAO Ying;ZHANG Xiang;LUO Youyi(College of Agronomy,Hunan Agricultural University,Changsha 410128,China)
出处
《灌溉排水学报》
CSCD
北大核心
2019年第10期26-31,共6页
Journal of Irrigation and Drainage
基金
国家水稻产业技术体系岗位专家项目(CARS-01-26)
国家重点研发计划课题(2018YDF0301002)
关键词
再生稻
发苗肥
发苗水层
产量
发苗能力
ratooning rice
seedling-fertilizer
seedling-water-layer
yield
ability of seedling
