共查询到19条相似文献,搜索用时 78 毫秒
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应日本全国稻鸭协会、日本鹿儿岛大学的邀请,2002年7月11~19日,镇江市稻鸭共作赴日考察团一行6人到日本稻鸭共作的发源地和研究中心日本九洲地区的鹿儿岛大学、福冈、冈山等地进行了考察学习,圆满完成了考察任务。 相似文献
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近年来,丹阳市在加大稻鸭共作技术推广步伐的同时,积极开展相关技术创新,在实践中不断探索,已形成了一整套比较成熟与完善的稻鸭共作标准化生产技术。 相似文献
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植保是我国水稻全程机械化生产过程中较薄弱的环节,对水稻无人直升机植保和半机械化植保两种模式开展了对比试验。结果表明,无人机植保工作效率是半机械化作业的16倍,节省农药成本26.4%,节省单位面积总成本23.42%;同时,无人机植保还具有喷洒均匀、雾化效果好、环保效果好和安全系数高等优点。水稻无人机植保将是替代传统半机械化作业的重要模式之一。 相似文献
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日本水稻插秧机械化发展现状及趋向 总被引:2,自引:0,他引:2
我国加快水稻生产机械化的发展目标是到2015年实现水稻栽植机械化,这个目标的实现具有现实意义。尽管我国四大产稻区水稻生产技术各有特点,特别是机械化栽植的切入点会有所差异.但替代人工插秧的机械化种植方向是一致的。经过多年来人们不懈的研究与探索,机械插秧已被多数稻区确认为主流技术。发展机械插秧就有必要了解先进国家插秧机的发展,本文就近年来日本插秧机发展的现状和趋向作一介绍。 相似文献
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0引言镇江市丹徒区地处长江下游的宁镇扬丘陵山区,粮食生产以稻麦为主,全区水稻种植面积1.63万hm2。水稻种植机械化始终是本区实现粮食生产全过程机械化的一个难题。为此,广大农机、农业技术人员做了大量工作,先后引进了手动插秧、机动插秧等多项技术,但这些技术要求高、推广难度大。水稻机械化旱直播以它省工、节本、节水和节省秧田等优势,在我区被广泛采用,并已总结出一套适合本地区水稻机械化旱直播高产栽培技术。 相似文献
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Three field experiments located at Yuhang (YH), Changshu (CS), and Jiaxing (JX) Agricultural Research Stations in the Taihu region of China were conducted to elucidate ammonia volatilization (AV) during rice growing seasons through ‘zero-drainage water management’, combined with sound irrigation, rainfall forecasting and field drying. The experiment at each site had five N rates (0-360 kg N/ha in 90 kg increments). AV was measured by the continuous airflow enclosure method. Results show that AV was completed within 10-12 days after urea application. The peak values of AV rates after the first topdressing (AF1) at N360 treatment could reach 11.2, 9.0, and 8.5 kg N/ha day within 2-4 days at the YH, CS, and JX sites, respectively. It was only necessary to maintain a higher water level during the first ‘flooding-drying’ cycle after the AF1. The seasonal averages of the total AV fluxes accounted for 4.4-15.5%, 4.4-12.6%, and 4.6-10.9% of the applied urea at the YH, CS, and JX sites, respectively, suggesting that the zero-drainage water management with flooding-drying cycles was effective for controlling AV. This study also speculates that the total AV flux during the rice season was more N rates and seasons related than sites. 相似文献
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日本水稻插秧机的研究进展 总被引:10,自引:1,他引:10
全面论述日本插秧机的研究历程。将日本插秧机的发展划分为3个时期:实用插秧机出现前的开发期、实用插秧机普及期、乘坐式插秧机出现到高速插秧机普及期。20世纪90年代后日本水稻插秧机主要向降低生产成本,节省劳动力以及多种功能方向开展研究与推广。 相似文献
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张喜成 《农业机械化与电气化》2014,(12):36-37
针对辽河下游营口稻区水稻生产干旱缺水的实际问题,根据多年节水种稻实践经验,从育苗、整地、插秧、施肥、灌溉各环节总结出一套盐碱地区抗旱节水水稻栽培技术,以适应缺水年份的水稻生产要求,确保水稻稳产、高产。 相似文献
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节水灌溉条件下水稻生长发育及生理机制研究 总被引:1,自引:0,他引:1
《中国农村水利水电》1996,(11):15-16
以水稻节水灌溉试验的大量实测资料为基础,分析了节水灌溉对水稻主要形态指标、生理机制及对产量的影响,并对节水灌溉条件下水稻所特有的生理机制作了较细致的研究。研究成果对于指导有效、省水的稻田灌溉具有重要意义。 相似文献
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A. Mishra 《Irrigation Science》1999,19(1):47-56
An experiment was conducted in diked rice fields with various weir heights (6 cm to 30 cm at an interval of 4 cm) for three
consecutive years in the sub-humid climate of eastern India. The results reveal that about 56.75% and 99.5% of the seasonal
rainfall can be stored in 6 cm and 30 cm weir height plots, respectively. Sediment losses of 347.8 kg/ha and 3.3 kg/ha have
been recorded in runoff water coming out of 6 cm and 30 cm weir height plots, respectively in a cropping season. Similarly,
total Kjeldahl nitrogen loss in runoff water from rice fields ranged from 4.23 kg/ha (6 cm weir height plots) to 0.17 kg/ha
(26 cm weir height plots). The available K loss ranged from 2.20 kg/ha (6 cm weir height plots) to 0.04 kg/ha (30 cm weir
height plots). Keeping in mind the aspects of conserving rainwater, sediment and nutrient and minimizing irrigation requirement,
22–26 cm of dike height is considered to be suitable for rice fields of the Bhubaneswar region during the Kharif (rainy) season.
A lumped water balance model for diked rice field was developed and used for the present investigation. The computed values
of runoff obtained from the simulation model are in close agreement with the observed values obtained in an experiment using
higher weir heights (22 cm and above). The temporal distribution of runoff and irrigation requirement at fortnight intervals
reveal that highest irrigation requirement is found during the first half of November followed by the second half of October
and the first half of October. Rice fields up to a weir height of 18 cm produced about 20% of the total runoff in each of
the first three fortnights. A gradual reduction in runoff was observed in the remaining fortnights. The least runoff was noticed
in the month of November (during the first fortnight). 相似文献