贡蕉组织培养快繁技术研究

贡蕉吸芽球茎茎尖外植体在MS 6-BA4．0mg／L NAA0．1mg／L培养基上培养20d后产生幼芽；丛生芽增殖培养基为MS 6-BA3．0mg／L NAA0．1mg／L，增殖率2．95倍；待幼芽长至3cm时转至生根培养基1／2Ms NAA1mg／L培养20d后生根率达100％。     

棉花膜下滴灌增产机理及主要配套技术研究

采用膜下滴灌方式灌溉,能保证棉花的生长始终处于一个良好的水分环境中,有利于棉花充分利用当地的光热资源,叶面积指数（ＬＡＩ）高值持续期进入早,持续时间长,积累的光合产物多,从而能获得较高的经济产量,降低灌溉定额,提高水产比。试验表明,膜下滴灌植棉能够增产２０％～５０％,节约用水２０％～５０％,水产比提高５０％。     

基于图像处理技术的5种红树林叶片形态特征及叶绿素相对含量的估测

为研究基于计算机视觉的图像处理技术获得的红树林叶片形态特征和叶绿素相对含量,以5种红树林为研究对象,分析其叶片形态特征及建立叶片颜色参数和叶绿素相对含量的回归模型,为苗木培育及营养诊断提供理论依据。结果表明：基于图像处理技术获得红树林叶片形态特征值是可信的,5种红树林叶片形态特征（叶面积、叶长、叶宽、叶周长、叶片形态因子）存在显著差异。红海榄和木榄单片叶片最大,其次是秋茄和桐花树,白骨壤叶片最小,白骨壤叶片形态接近椭圆形,红海榄和秋茄2种红树叶片属于长条型,木榄和桐花树叶片形态类似,红海榄叶长和叶宽相关性最强。5种不同种类红树林的SPAD值和Dualex值差异性显著。利用数码相机获取5种红树林叶片彩色图像,通过图像处理软件提取RGB以及通过差值、比值、标准化值、归一化值等运算组合的28种颜色特征值,与叶绿素相对含量（SPAD值、Dualex 值）进行回归分析,B值与SPAD值极显著相关,(R+B+G)/3、R/B、G/B与SPAD值显著相关;18种颜色特征参数与Dualex值显著相关,其中相关系数最大的为G-B和G值。因此,可依据颜色特征参数（R、G、B）建立相应的统计模型进行红树林叶片叶绿素含量的估测,进而为检测红树林生长、诊断营养状况以及进行水肥精确管理提供理论依据和技术支持。     

沙生植物阿拉善沙拐枣的引种裁培及生物生态特性研究

本文对在呼和浩特市引种裁培的珍烯濒危植物阿拉善沙拐枣的生长规律（包括地下根系统状况），抗逆性等生物学生态学特性和繁殖技术等进行了初步研究，为阿拉善沙枣荒漠木草原的人工栽培与复壮更新提供了科学依据。     

拱棚秋西芹高效益栽培技术

通过试验、示范,成功探索出拱棚秋西芹高效益栽培技术,平均产值75000元hm-2,拓宽了菜农增收渠道,成为今后发展地方特色优势产业的新亮点。     

分子标记技术在小麦遗传育种中的应用现状

小麦庞大的基因组使得分子标记技术在小麦中的应用落后于大麦、玉米、水稻等作物。近年来,随着他子标记技术检测系统的发展和完善,分子标记技术在小麦中的应用已有了很大的进展。分子标记技术依靠提供准确、稳定可靠的ＤＮＡ水平的遗传标记,在小麦遗传育种研究中已用于构建遗传图谱、标定和定位目的基因、鉴定与标记外源染色体片段、鉴定品种真实性和纯度、绘制品种指纹图谱、遗传分析、物种演变、标记辅助选育等方面。     

瘠薄山地毛竹丰产培育技术

瘠薄山地在闽北山区占30%以上,在闽北林区瘠薄山地分布有毛竹。瘠薄山地应用不同的经营方式达到毛竹的丰产,是毛竹林在培育过程中不可缺少的丰产技术。该文总结瘠薄山地毛竹丰产培育技术。     

建瓯锥栗优质高产栽培技术

总结了建瓯锥栗优质高产栽培技术,主要包括品种选择、嫁接早熟品种、合理密植、整形修剪、科学施肥、病虫害防治等方面内容。     

丝瓜新品种“福研1号”特征特性及高产栽培技术

福研1号丝瓜生长旺盛、分枝能力强、抗性强、产量高,在栽培管理上要育苗移栽、采用平棚架栽培、早春辅助人工授粉及综合防治病虫害.     

Dynamics of 13C‐labeled mustard litter (Sinapis alba) in particle‐size and aggregate fractions in an agricultural cropland with high‐ and low‐yield areas

The application of ¹³C‐labeled litter enables to study decomposition processes as well as the allocation of litter‐derived carbon to different soil C pools. ¹³Carbon‐labeled mustard litter was used in order to compare decomposition processes in an agricultural cropland with high‐yield (HY) and low‐yield (LY) areas, the latter being characterized by a finer texture and a lower organic‐C (OC) content. After tracer application, ¹³C concentrations were monitored in topsoil samples in particulate organic matter (POM) and in fine mineral fractions (silt‐ and clay‐sized fractions). After 568 d, approximately 5% and 10% of the initial ¹³C amount were found in POM fractions of LY and HY areas, respectively. Higher amounts were found in POM occluded in aggregates than in free POM. Medium‐term (0.5–2 y) storage of the initial ¹³C in fine silt‐ and clay‐sized fractions amounts to 10% in HY and LY soils, with faster enrichment but also faster disappearance of the ¹³C signal from LY soils. Amounts of 80%–90% of the added ¹³C were mineralized or leached in the observed period. Decomposition of free POM was faster in HY than in LY areas during the first year, but the remaining ¹³C amounts in occluded‐POM fractions were higher in HY soils after 568 d. High‐yield and low‐yield areas showed different ¹³C dynamics in fine mineral fractions. In LY soils, ¹³C amounts and concentrations in mineral‐associated fractions increased within 160 d after application and decreased in the following time period. In HY areas, a significant increase in ¹³C amounts did not occur until after 568 d. The results indicate initially faster decomposition processes in HY than in LY areas due to different soil conditions, such as soil texture and water regime. The higher silt and clay contents of LY areas seem to promote a faster aggregate formation and turnover, leading to a closer contact between POM and mineral surfaces in this area. This favors the OC storage in fine mineral fractions in the medium term. Lower aggregate formation and turnover in the coarser textured HY soil leads to a delayed C stabilization in silt‐ and clay‐sized fractions.