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高产水稻田
相关语句
  high-yielding paddy field
     Nitrogen Leaching from the High-Yielding Paddy Field in Wujin City.
     江苏省武进市高产水稻田氮素渗漏损失研究
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  相似匹配句对
     They always connected water with their attitude.
    
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     Water
    
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     The Research on the Soil-Fertilizer-Watering Integrate Technical Indenies of High-yield Summer-sown Maize
     高产夏玉米土肥综合技术指标的研究
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     High Productivity Punching Die
     高产冲模
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     Optimization of Water and Nitrogen Management for High-Yield-Cotton in South Xinjiang
     南疆高产棉田氮优化管理研究
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improving the field condition is an important factor for the increase of rice yield.High yield paddy field should possess the following characteristics, thick and fertile soil horizon,desirable soil structure, good drainage and irrigation facilities, low ground-water level and abundant soil organic matter,

改善田间条件是水稻增产的重要因素.高产水稻田应具下列特点:土层厚而肥,土壤结构良好,排灌系统良好,地下水位低和富于有机物质.全年的品种安排趋向于向一年的中间靠拢.这样安排可避过早春和晚秋的寒冷天气和利用夏天高温强光的好环境.培育壮秧是早、晚稻的高产的前提.预防由低温引起的烂秧是早稻育秧过程的首要问题.基于对水肥需要不同,水稻在本田的田间管理可分为三个时期:前期的田间管理是促进分蘖生长,以获得足够的有效分蘖;中期要控制水稻群体的发展,抑制无效分蘖,养分集中供穗分化用;后期则要维持根和叶的活动,使结实粒多、粒重.深施肥料无论在植株生长或产量方面都比表施为佳.与表施相比,深施有许多优点,如减少氮素损失,供肥稳而长久,增加根的生长和活性等等.与常规品种相比.杂交稻具很强的分蘖特性、故宜疏播、疏植、多施肥料.

Pollution of heavy metals in soil is important for sustainable development,especially in the developed areas,because the soil not only influences the health of people,but also the environment through air and water.To obtain an overview of land use effects on the accumulation of Cd in the soil,98 samples were collected from Kunshan.The average content of Cd in high-yield,mid-yield,low-yield paddy field,vegetable land,garden land soil samples was higher than the background concentration of soil in Kunshan(0.110...

Pollution of heavy metals in soil is important for sustainable development,especially in the developed areas,because the soil not only influences the health of people,but also the environment through air and water.To obtain an overview of land use effects on the accumulation of Cd in the soil,98 samples were collected from Kunshan.The average content of Cd in high-yield,mid-yield,low-yield paddy field,vegetable land,garden land soil samples was higher than the background concentration of soil in Kunshan(0.110 mg/kg).The order of the average Cd content was as the followings: low-yield paddy field > mid-yield paddy field>garden land > vegetable land > high-yield paddy field > uncultivated land.Compared with standard(0.20 mg/kg),20%,18.75%,11.11% and 9.09% in mid-yield paddy field,low-yield paddy field,garden land and vegetable land soil samples,exceeded the standard limit.According to this investigation,industrial activities and irrigation of sewage were the causes in the accumulation of soil sample Cd.

通过对江苏省昆山市高中低产水稻田、菜地、园地和抛荒地等土地利用类型98个土壤样点的检测分析,探讨了不同土地利用方式对土壤镉浓度含量的影响。研究结果表明,高中低产水稻田、菜地、园地土壤镉浓度都超过土壤背景值(0.110 mg/kg)。6种土地利用方式中,低产水稻田土壤的镉浓度最高,其次分别为中产水稻田、园地、菜地、高产水稻田和荒地。与土壤标准值(0.20 mg/kg)相比,中产水稻田有20%样点超标,低产水稻田、园地、菜地分别有18.75%、11.11%、9.09%样点超标,而高产水稻田和荒地没有超标样点。工业废物排放和磷肥的使用可能是影响不同土地利用类型下土壤镉浓度的重要原因,应该引起重视。

 
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