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机插水稻的生育特性与栽培技术 总被引:4,自引:2,他引:2
总结了机插水稻的生育特性,并介绍了机插水稻栽培技术,包括育秧前期准备、种子处理、播种、大田整地、栽插、肥水管理、病虫草害防治等方面内容,以期为机插水稻大面积推广提供指导。 相似文献
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该文通过对丘陵地区推广水稻机插试验示范到大面积推广,已获得成功经验,并对关键技术操作进行系统总结,重点从培育壮苗、秸秆全量还田、机插合理群体、精耕细整、肥水管理、病虫草害绿色防控等方面对机插水稻栽培关键技术进行了阐述,为今后丘陵地区推广水稻机插栽培提供技术参考。 相似文献
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通过水稻科技综合展示及水稻新技术的运用,总结并整理出粳稻机插精确定量栽培技术规范,包括培育软盘壮秧、秸秆全量还田与精整大田、精准机插、水浆管理、肥料运筹、病虫草害综合防治。 相似文献
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旨在明确助剂激健与机插秧稻田除草剂减量混用是否对机插秧水稻安全以及是否具有增效作用。本试验比较了机插秧稻田3种封闭除草剂配方和3种茎叶除草剂配方的常量处理和相应配方减量40%添加激健处理对机插秧稻田杂草的防除效果及对机插稻安全性影响。结果表明,供试除草剂配方常量处理与减量处理均对机插秧水稻安全,封闭除草剂配方35%丙噁·丁草胺胺EW+19%氟酮磺草胺SC 组合和茎叶除草剂配方3%氯氟吡啶酯EC+100g/L氰氟草酯EC组合、10%噁唑?氰氟EC+38%二甲?灭草松AS组合、60克/升五氟?氰氟草OD+38%二甲?灭草松AS组合的常量处理与减量处理对机插秧稻田杂草均有较高防效,且常量处理与减量处理之间差异不显著,说明激健助剂对机插秧水稻杂草防除具有积极的作用。 相似文献
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以抗除草剂两系杂交早稻香125S/Bar68-1为材料,比较了直播、抛秧、机插3种轻简栽培模式与草胺膦除草、常规除草两种除草方式对水稻病虫害发生的影响。结果表明:栽培模式对病虫害发生的影响大于除草方式;直播栽培模式下稻飞虱发生明显较轻,抛秧栽培模式下纹枯病始发期较机插、直播早;各处理采取的防治方案对稻飞虱的防治效果显著,对稻纵卷叶螟、纹枯病、稻曲病等的防效也明显,但对二化螟的防效不佳;建议施药时间以二化螟达到防治指标为开始时间,一般在5月26~28日第1次施药,约2周后第2次施药。 相似文献
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Growth characteristics and grain yield of machine-transplanted medium indica hybrid rice with high daily yield
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DENG Fei HE Lian-hua CHEN Duo ZHANG Chi TIAN Qing-lan WU Zhen-yuan LI Qiu-ping ZENG Yu-ling ZHONG Xiao-yuan CHEN Hong WANG Li REN Wan-jun 《农业科学学报》2022,21(9):2547-2558
High-yield rice varieties with a suitable growth duration are required for mechanical transplanting in multiple cropping systems. Daily yield is an appropriate criterion for the selection of machine-transplanted rice varieties. The aim of this study was to investigate the growth characteristics and grain production in machine-transplanted medium indica hybrid rice with a high daily yield. We conducted a field experiment on 20 medium indica hybrid rice varieties in 2017 and 2018. Grain yield decreased significantly with growth duration between jointing and heading, but it increased with dry matter accumulation, growth rate between jointing and heading, dry matter partitioning to the stem plus sheath at heading, daily yield, and number of spikelets per panicle. Compared with the medium and low daily yield variety types, the high daily yield variety type increased shoot biomass by improving crop growth rate and dry matter accumulation amount between jointing and heading and after heading. The high daily yield variety type decreased the growth duration pre-heading and the proportions of dry matter partitioned to the leaf lamina at heading and maturity, but it also increased the post-heading accumulated dry matter in the grain and the remobilization of dry matter stored in the vegetative organs. Furthermore, the high daily yield variety type significantly increased the occurrence rate of tillers, which is beneficial for the formation of a larger panicle size and an increase in the grain-filling rate. These changes contributed to a 6.51–23.16% relative increase in grain yield of the high daily yield variety type. In conclusion, the selection of high daily yield indica hybrid rice varieties with shorter pre-heading growth duration, greater tiller occurrence rate and spikelet numbers per panicle, higher post-jointing growth rates and stem plus sheath dry matter accumulation at heading is suitable for machine-transplanted rice. 相似文献