The high and stable yield abilities of 18 millet varieties which have breed recently for the north high plateau area in china were studied by the methods of megression coeffient , stable parameter , and high and stable yield coefficient as well 摘要利用回归系数法、稳定性参数法和高稳系数法，对我国北部高原地区新育成的18个新品种（系）的高产稳产性进行了研究。
The results showed that the most of the test varieties had high yield , which was 55 . 6 % , but in which they had poor stability so that there was only three varieties as tie93 - 115 , 95 fenxuan 3 and chenggu 8 with high and stable yield ability , which was 16 . 7 % 结果表明，参试品种多数产量较高，占55 . 5 % ，但其中产量稳定性较差的占多数，高产稳产的品种较少，仅有铁93 - 115 、 95汾选3和承谷8号，占16 . 7 % ，其馀的均为低产稳产和低而不稳的类型，各占22 . 2 % 。
Now most oil fields have been high water - cut , so studing fluvial sandbody architecture can provide important academic evidence to realize the distribution of remained oil and hold peak or settled production , fn addition to , how to combine the facts of macroscopical and microcosmic , and how to combine the result of well network and fields outcrop . then instruct production and practice , which is the stress of this article 在目前大多数主力油田已进入高含水期的形势下，研究河道砂内部建筑结构，可以为了解剩余油分布规律，保持油田高产稳产，提供重要的理论依据。此外，如何将宏观与微观的因素结合起来，将密井网研究成果及野外露头研究成果有机的结合起来，用于指导油田生产实践，也是本次研究的重点之一。
As a general artificial lifting extraction mode , mechanical pump well has taken an important role in the world oil extraction for its proven technique , reliable performance and well adaptability , for underground reserves decreasing year - by - year , percent of water increasing year after year , in order to keep high and stable yields , restrict management ways and efficient technical measures must be taken in daqing oil field 机械采油井作为常规的人工举升开采方式，由于其技术成熟便于掌握，工作性能可靠，适应性较强，因而在当今世界各国油田生产中占有举足轻重的地位。在大庆油田，由于地下储量在逐年减少，含水逐渐上升，在这种情况下，要继续保持油田高产稳产，必须采取严格的管理办法和有效的技术手段，确保油田高产稳产。
Through the development of more than 40 years , after long - term high produce and steady produce of oil , daqing stride the development stage of mixing the mineral area economy with the city economy , and just develop from the mineral district of singleness mineral type toward the center city of comprehensive function type 经过40多年的开发建设,在原油长期高产稳产之后,大庆迈入了矿区经济与城市经济混存的发展阶段,而且正由单一工矿型矿业城市朝着综合功能型的中心城市发展。
By stirring water with the impeller , splash water to the air evenly and widely , strengthen the pond water ' s flowing circulation , make pond water dissolve into oxygen and death of fish , shrimp and eel , raise the breeding density , quicken the growth so to achieve high and stable yields 通过叶轮搅水,把水均匀而弥散地泼向空间,加强池水流动循环,使池水溶入氧而稀释和排出有害物质,增加水中的溶氧量,改善水质,防止鱼虾鳗浮头死亡,提高养殖密度,加速生长,从而达到高产稳产。
