高寒山区水稻旱育抛秧高产栽培技术

水稻是金寨县的主要粮食作物,但平均单产远低于全省水平,其中重要原因之一就是分布在海拔500米以上的高寒山区水稻田约占全县水田总面积的15％。这类水稻田因气温、水温、地温低,水稻栽培播种期迟、秧苗素质差、基本苗不足、分蘖能力弱、有效苗（穗）少、花期低温不实而导致低产低收。     

发达国家取消棉花补贴对我国棉业经济的影响分析 基于空间性应用一般均衡模型

首先对发达国家取消棉花补贴因素模型化,然后通过构建发达国家取消棉花补贴对我国棉业经济产生影响的空间性应用一般均衡(SCGE)模型进行模拟分析.结果表明:发达国家取消棉花补贴对我国棉花价格、国内纺织品价格的影响不大,在一定程度上会促进棉农收入的增加和纺织品生产的增加,我国的棉花和纺织服装产品出口将会增加.     

Regeneration and identification of interspecific asymmetric somatic hybrids obtained by donor-recipient fusion in cotton

Asymmetric hybrids between Gossypium hirsutum （YZ-1） and G. davidsonii were obtained by donor-recipient fusion. YZ-1 was considered the recipient and was pretreated with iodoacetamide （IOA）, while G. davidsonii was considered the donor and was irradiated with ultraviolet （UV） before fusion. YZ-1 protoplasts stopped growth when treated with 0.5 mmol/L IOA for 20 min, and G. davidsonii protoplasts stopped growth when irradiated with 38.7 J/cm2 UV for 30 s. Asymmetric somatic hybrids were obtained by electrofusion between the separately treated protoplasts of the 2 species. The regenerated plants were identified by morphological, cytological, and molecular analysis. Most regenerated plants derived from fused protoplasts displayed new morphology; some were intermediate between the two parents and a few displayed recipient-like morphology. Chromosome numbers in these somatic hybrids mostly ranged from 40 to 73. The hybridity was confirmed by random amplified polymorphic DNA and simple sequence repeat analysis. Organelle DNA inheritance of the YZ-1 and G. davidsonii somatic hybrid was investigated by cleaved amplified polymorphism sequence and chloroplast simple sequence repeat analysis, which indicated that recombination and rearrangements might have occurred in some regions of mitochondrial and chloroplastic DNA. This is the first report of completely asymmetric hybrid production via donor–recipient fusion between G. hirsutum and G. davidsonii, which is a novel case in hybrid production following the symmetric fusion and asymmetric fusion based on UV irradiation in cotton.     

组成型漆酶高产菌株的筛选及其产酶条件研究

通过平板显色法及氧化带测定法初筛,愈创木酚法测定培养液漆酶酶活力复筛,从菌株中获得1株组成型漆酶高产红芝Ganoderma lucidum菌株.对红芝液体培养产酶条件的研究表明:以麦芽糖和硫酸铵为碳、氮源时,更有利于红芝漆酶的分泌,其酶活高于以其他物质作为碳、氮源;在250 mL三角瓶中装50 mL培养基有利于产酶;适宜初始培养基pH为6.0;适宜培养温度为30 ℃.     

煤层气井优先抽排煤层上部含水层水的研究

针对煤储层敏感性高和高产水、弱含水的储层特征,提出了一种新的排采方式,取得如下认识:1新排采方式优先抽排煤层上部承压含水层水,再进行煤层压裂、排采,确定了停止抽排含水层水的动液面高度;2该排采方式避免了部分常规排采方式存在的问题,包括吐砂、煤粉产出、气锁效应等,缩短了煤层气井排水周期;3新排采方式基于煤层之上有承压含水层的地层结构,对高产水井优势更大;4以柳林X1煤层气井为例,计算了应用新排采方式时,含水层排水阶段的临界动液面高度、降深和影响半径。     

农工增收影响因素实证分析——以新疆兵团“棉花主产师”为例

本文采用多元统计的方法,对影响新疆生产建设兵团棉花主产师农工增收的主要因素进行了实证分析,得出结论：新疆兵团棉花主产师农工增收的最大障碍是农业投入不足。     

小麦生长后期三大灾害的发生及预防

青枯、干热风危害、倒伏是河南省小麦生长后期的三大灾害,及时预防这三大灾害的发生,是确保小麦优质高产的重要措施。     

消费不振 棉花后市难以走稳

目前,国内棉花现货形势有所好转,但我们必须看到,在目前国际经济大环境下．各国救市政策的效果还存在不确定性,棉花市场未来的走势还有太多的变数。     

国审稻内香优8518的科学种植及推广前景

内香优8518是内江杂交水稻科技开发中心利用自育的优质、香型不育系内香5A与抗病、优质恢复系内恢95—18配制的香型优质杂交稻新组合,2006年通过国家审定。2008年由临沧市种子管理站引入在临翔区忙畔街道青华村海拔1450米的杂交稻次适宜区进行品种试种,表现出高产优质兼顾、抗性强、适应性好等特点,深受群众喜爱：     

附子高产栽培技术

根据多年试验示范结果和生产实践,总结出附子生产中整地施肥、选种播种、套种遮荫、田间管理、病虫防治等配套高产技术。