Takeing drought - resistant index and drought - resistant coefficient as evaluation indicators , also considering their fertility and stability of yield , germplasms that showed fine character were rongjiang cihong , luodian juhuang , wangmo huang , ziyun jianzuihong , wangmo mashan hong , ziyun huang and so on 以抗旱系数和抗旱指数为主要评价指标，兼顾其稳产性和丰产性，表现优良的种质有：榕江刺红苞谷，罗甸桔黄苞谷，望谟黄苞谷，紫云尖嘴红包谷，望谟麻山红苞谷，紫云黄苞谷等。
With the development of oil fields , many old reservoirs in the east of china enter the high water - bearing development period . sustaining a high and stable production rate faces severe challenge . the key to preserve oil output in high water cut period is dependent upon the understanding degree to the properties of residual oil distribution . from 1980 ' s , while the study of the reservoir flow unit was proceeded alongside , it has been more widely utilized to characterize reservoir feature and remnant oil distribution . study of reservoir flow unit plays . both theoretically and practically . an important role in recognizing reservoir heterogeneity . performing a high - definition reservoir delineation and understanding the distribution of the remnant oil in the reservoir 随着油田的不断开发，我国东部许多老油田已进入高含水期开采阶段，保持油气产量的稳定面临严竣的挑战，而高含水油田稳产的关键取决于对剩余油分布的认识程度。八十年代以来，随着对储层流动单元研究的不断深入，它越来越广泛地被应到油藏描述和剩余油研究中来，流动单元研究对于认识储层的非均质性、提高油藏描述精度、搞清剩余油分布具有重要的理论意义和实际意义。
Abstract : the high and stable yields of wheat are mainly affected by spring cloudy - moist hazards in the region to the south of huaihe river . a identification method was developed according to an index q in this paper . the method was applied to the identification of damage in 1998 , a better results were obtained 文摘:淮河以南地区春季阴湿害是影响三麦稳产、高产的主要原因，提出确定阴湿系数q来判别阴湿害的方法，并将研究结果应用于1998年春季阴湿害的判别，效果很好。
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。
The 15000 oxygenerator engineering was a key engineering of anyang iron & steel corporation in 2000 and 2001 . whether or not it could be commissioned successfully , or reached its capacity or operated smoothly , had a direct bearing on current annual production and management objectives of anyang iron & steel corporation , which possessed the decisive strategy significance to the present and future development of the corporation 安钢15000制氧机工程是2000年至2001年度安钢的重点工程，工程能否按期顺利投产、达产和稳产，直接关系到安钢公司能否实现当年生产目标和经营目标，对安钢公司现在和将来的发展有举足轻重的战略意义。
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。
In this article , the highly - efficient plant vectors with bivalent genes have been constructed by combining the gene of vhb with bt gene and cfmcryla - cpti gene respectively , studying the influence over the plants metabolic level and growth . we manage to reach the goal of increasing the yield of transgenic plants and cultivate new plant varities with pest - resistance by applying transgenic approaches , and eventually in the hope of cultivating new varities of crops with hoth highly - steady - yield and pest - resistance 本文尝试将透明颤菌血红蛋白( vhb )基因优化、人工合成并且分别和gfmcryia ( bt )基因、融合杀虫基因( bt - cpti )构建成双价基因植物高效表达载体，导入烟草，研究该基因对植物代谢水平和植物生长的影响，尝试通过基因工程育种技术增加转基因作物产量的同时，双可使其具有抗虫性，以期望培育出高产、稳产又具有抗虫效果的新品种。
Between pure and mixed moso stand by a great deal of experiments , and it puts forward a guidance pattern of classified and rational management , and the implementation of ecological cultivation and ecosystem management as per different types of mixed bamboo stands so as to ensure high and stable yield of mixed bamboo stand , and better circulation of ecological equilibrium 通过大量的试验研究，分析毛竹纯林和竹木混交林的生境差异和经营特点，经营条件，提出怎样根据竹木混交林的类型，分类指导，制定科学的经营方案，实行生态培育和生态系统管理，确保竹木混交林丰产稳产，生态平衡趋向良性循环。
