柴达木盆地本地资源盐生植物的应用及引种外源盐生植物的评估

本文对柴达木盆地的盐生植物进行了梳理、评价,以期确定可用于盆地内多类盐土地的生物治理改良,且有较大经济价值而可持续发展的本地盐生植物,并依据这些植物的生理生态特性及其生长环境来选择一些适合引种的外源的经济盐生植物候选物种.     

大庆盐碱土壤中微生物的分离纯化

采用牛肉膏蛋白胨培养基、高氏一号培养基、马铃薯培养基、查氏培养基4种培养基对大庆富强地区盐碱土壤中微生物进行分离纯化,从4种培养基中分离出8种相对优势菌.经形态学及生理生化鉴定,发现8种菌分属于细菌、放线菌、真菌,而且盐碱土壤微生物组成与植物分布有关.     

新疆早熟棉品种SSR分子标记体系的建立

为探索适宜新疆早熟棉的SSR-PCR反应体系,采用L9(34)正交实验设计,研究了SSR-PCR反应体系的主要成分对扩增结果的影响。结果表明,棉花SSR-PCR最适反应体系为:在10μL的反应体系中,Taq DNA聚合酶用量为0.1 U、dNTP浓度0.2 mmol/L、引物浓度0.4μmol/L、Mg2+浓度2.5 mmol/L和模板DNA 20 ng;在此基础上,从2300对SSR引物中筛选出多态性高的引物52条,分别构建了新疆已经审定的42个早熟棉品种的DNA指纹图谱。该研究为早熟棉品种鉴定、遗传多样性分析,分子标记辅助育种和种子质量综合评价等奠定了基础。     

脱硫废弃物改良盐碱地对水稻生长发育及土壤的影响

采用田间试验方法,以改良龟裂碱土为目标,研究施用脱硫废弃物改良盐碱地对水稻生长发育及土壤的影响.结果表明,水稻常规栽培、管理条件下,在盐碱地中施加脱硫废弃物能够改善水稻的生长发育,即增大水稻叶面积指数,提高水稻生物量和产量.当脱硫废弃物+改良剂施用量为(2.5 t+0.5 t)/666.7 m2,泡水量定额为100 m...     

安徽淮北地区盐碱土的成因及其改良措施

安徽淮北地区存在大量的盐碱土，影响土壤的利用和开发，限制农业进一步发展．本文对该地区盐碱土的成因和改良措施进行了研究，意在对开发利用盐碱上，加速本地区农业发展，起借鉴作用．     

高位池养殖污染渗透规律分析

从地下水的污染和咸化、土壤的污染和盐碱化、海水的污染和富营养化等3个方面研究了高位池养殖污染的渗透规律,并确定相应的数学模型.地下水污染和咸化以民用水井中的Cl-含量来表征,Cl-检出量随水井与高位池距离的增大而呈递减变化规律;土壤的污染和盐碱化以含盐量来表征,含盐量随农田与高位池距离的增大而呈梯度递减变化规律;海水污染和富营养化以COD、TP来表征,COD、TP浓度与海水深度呈递减变化规律.     

厦门天竺山森林公园度假酒店设计理念探析

提出“显山露水,融于自然”的设计理念,探索厦门天竺山森林公园度假酒店方案的设计思路,即度假酒店契合自然山水并与环境融合、山地建筑尊重地形地貌并因山借势,并解析了山地度假酒店在规划布局、单体建筑、景观空间等设计手法与过程．     

不同施肥条件下巴西陆稻IAPAR9的养分吸收特性研究

巴西陆稻植株在移栽期——分蘖盛期的氮、磷、钾吸收量较少，分别占其吸收总量的17．1％，12．8％，13．0％，在分蘖盛期——孕穗期氮磷钾吸收量比重最大，分别占其吸收总量的50．1％，53．7％，48．7％左右。氮、磷、钾用量与土壤碱解氮、有效磷、速效钾，以及植株氮、磷、钾吸收总量呈极显著正相关，氮肥用量与植株钾素吸收总量亦呈极显著正相关。在中氮、磷、钾水平下，吸肥优势明显，物质生产效率较高。     

QTL mapping of the root traits and their correlation analysis with drought resistance using DH lines from paddy and upland rice cross

A Double Haploid (DH) population, 116 plants, derived from the cross between Japonica upland rice IRAT109 and paddy rice Yuefu, planted in PVC pipe under upland ecosystem in 2001 and 2002, was used in this study. Seven root traits, including basal root thickness (BRT), total root number (RN), maximum root length (MRL), root fresh weight (RFW), root dry weight (RDW), ratio of root fresh weight to shoot fresh weight (RFW/SFW) and ratio of root dry weight to shoot dry weight (RDW/SDW), were studied. Using index of drought resistance (IDR), the ratio of yield under upland ecosystem to yield under lowland ecosystem of DH lines, as the criteria of drought resistance, and correla-tion analysis between root traits and IDR, showed that BRT, MRL and RN were significantly correlated with IDR. High IDR lines had thicker BRT, longer MRL and less RN than low IDR lines. A molecular linkage map with 94 RFLP markers and 71 SSR markers covering 1535.1 cM was pro-duced. QTLs and G譋 interactions for BRT, RN, MRL, RFW, RDW, RFW/SFW and RDW/SDW were obtained based on the constructed molecular linkage map and soft-ware QTLmapper version 1.0. A total of 18 additive QTLs and 18 pairs of epistatic QTLs associated with root traits were detected. There were nine additive QTLs and two pairs of epistatic QTLs performed significant interactions with environment. Some QTLs with high general contribution and no G譋 interaction were obtained. Two pairs of epistatic QTLs mrl3 and mrl8, brt3 and brt11a controlling MRL and BRT had high general contributions of 21.51% and 13.03% respectively. An additive QTL and a pair of epistatic QTLs controlling RFW and RDW had high general contributions of 13.50% and 25.64% respectively. Marker assisted selec-tion (MAS) for rice drought resistance based on QTL with high general contribution, low G譋 interaction and tightly linkage with IDR were also discussed.     

新疆野麻主产区土壤中若干盐碱成分的化学计量学分析

 用化学计量学中的主成分分析方法处理新疆野麻主产区土壤中若干盐碱成分的测试数据,可以获得不同野麻主产区盐碱成分分布情况及其异同和同一产区各盐碱成分间相互作用关系.