黄麻PHBV复合材料的耐湿热性能研究

用非织造布技术制作了黄麻/PHBV针刺毡，热压处理后制成黄麻/PHBV复合材料，通过对复合材料的室温、高温干态和湿态力学性能研究，用扫描电镜(SEM)对复合材料的界面进行了表征，显示应用纤维改性技术使复合材料耐湿热性能得到明显提高。     

黄麻红麻生物质高效利用与区域发展产业带建设

本文从黄麻红麻生物质高效利用与区域发展产业带建设的战略高度,综述了国内外黄麻、红麻纤维与生物质高效利用的系列最新研究成果,分析了现阶段已研发成果的产业化前景与国内外市场需求,提出了利用黄红麻作为生物质能源、纸浆、绒毛浆、纺织面料、轻型建材、友好吸附型材料、麻塑、麻地膜、食用保健油及CLA医疗保健品产业化与区域发展的战略思考,对促进我国黄红麻的发展、提高我国黄麻红麻核心竞争力有重要的理论与现实意义。     

黄麻红麻生物质高效利用与区域发展产业带建设

本文从黄麻红麻生物质高效利用与区域发展产业带建设的战略高度，综述了国内外黄麻、红麻纤维与生物质高效利用的系列最新研究成果，分析了现阶段已研发成果的产业化前景与国内外市场需求，提出了利用黄红麻作为生物质能源、纸浆、绒毛浆、纺织面料、轻型建材、友好吸附型材料、麻塑、麻地膜、食用保健油及CLA医疗保健品产业化与区域发展的战略思考，对促进我国黄红麻的右展、撂高我国昔麻红麻核心童每力有重要的理论与现实意义．     

菜用黄麻‘福农2号’主要特征特性及高产栽培模式

福建农林大学选育的菜用黄麻‘福农2号’经省内外多年多点鉴定,平均可食鲜茎叶产量达28.60 t/hm~2,比对照‘宽叶长果’增产13.35%,2012年通过安徽省新品种鉴定。本研究在分析该品种产量与主要特征特性的基础上,测试了其主要营养成分,并采用L9(34)正交设计,研究了品种、密度、肥料三因素三水平的高产栽培模式。结果表明:(1)菜用黄麻‘福农2号’可食鲜茎叶产量高,全生长期达172 d,采摘期97.3 d,比‘宽叶长果’长25 d,经济性状好;(2)该品种每100 g鲜茎叶总膳食纤维7.7 g,钙814 mg,钾1 500 mg,硒0.1μg,胡萝卜素8.9μg,总氨基酸55.4mg,营养价值高;(3)‘福农2号’最适栽培模式为密度9万株/hm~2,施氮量185.5kg/hm~2,可食嫩茎叶的产量最高。     

豫南地区黄麻主要病害的发生及防治方法

植物病害是影响农作物产量的重要原因之一,为确保黄麻高产稳产,提高品质的目的,我们针对豫南地区黄麻种植中发生的主要病害进行了较系统的调查、观察,总结防治经验,提出了合理的防治方法,供麻农生产上应用,以期待为黄麻生产的发展提供防病依据。     

红、黄麻分期收剥对纤维产量和品质的影响

试验在杭州进行,按不同收期对红、黄麻纤维产量和品质进行了测定。结果表明,目前普遍种植的迟熟品种,直至10月上旬其纤维产量仍未显著地超过所有供试的中熟品种。由于迟熟品种每年需要向华南购籽,花费较大,以及不能充分地利用有利的生长季节,迟熟品种的经济效益可能不及某些高产的中熟品种。因此,选用高产的中熟红、黄麻品种     

Physical and hydraulic properties of synthetic envelopes for subsurface drainage in Pakistan

Three imported and four local synthetic envelope materials were tested in the laboratory with upward flow permeameters to determine their physical properties and hydraulic performance. The base soil was taken from the site of the Fourth Drainage Project, Faisalabad, Pakistan. The performance parameters included ratios of gradient and hydraulic conductivity of the interface of envelope material and base soil and the discharge through the permeameter, which were evaluated against established particle-retention and filter criteria.The study concluded that each of the tested materials satisfied the particle-retention criteria because the ratio of characteristic diameters of envelope (O₉₀) and soil (d₉₀) remained less than 2.5. The filter criteria, however, could not be met satisfactorily, particularly during receding hydraulic gradients, when the ratio of envelope and base soil hydraulic conductivities (Ke/Ks) dropped below 1, except in the case of one imported material. Blocking of the soil-envelope interface occurred due to the internal movement of soil particles, particularly during receding gradients.     

Leaf and seed yield of jute mallow (Corchorus olitorius L.) accessions under field conditions for two consecutive growing seasons

Jute mallow is a nutritious leafy vegetable used by many people in Africa. The purpose of this study was to select accessions with high leaf yield and seed yield. We investigated seven agronomic traits that are related to leaf yield and seed yield and how they correlate with each other. The results indicated significant differences among the accessions in all traits. Leaf fresh weight ranged from 18.3 to 121.3 g/plant in accessions TOT 6747 and TOT 8532, respectively. The highest variability between the accessions was also observed in seed yield. It ranged from 1.0 g/plant in accession TOT 7980 to 35.5 g/plant in TOT 7866. Eight other accessions had a seed yield of 1.0 g/plant. Significant and positive correlations were observed between leaf fresh weight and leaf dry weight (r = 0.84), leaf area (r = 0.33), and number of leaves (r = 0.40). A significant correlation was observed in seed yield and weight of pods per plant (r = 0.83). The evaluation of these agronomic traits for leaf and seed yield in this germplasm has revealed useful information for breeders in their efforts to improve the yield as well as selection of accessions with good agronomic traits.     

黄麻核心种质的遴选

遴选黄麻核心种质可为黄麻种质创新及新品种选育奠定基础。本研究以300份黄麻种质资源为基础,基于SSR分子标记和农艺性状考察,结合地理来源构建核心种质。结果表明,11个农艺性状变异系数变幅在13.06%～84.87%,表现出丰富的遗传多样性。按农艺性状聚类分析可划分为8个类群,按分子标记聚类可划分为10个类群。结合2个聚类分析、地理位置并按比例取样,建立一个由108份品种(系)组成的预选核心种质。采用44对SSR引物对其进行遗传差异分析,在遗传相似系数为0.65时,可把108份品种(系)分成圆果种和长果种两大类。根据遗传差异分析,剔除遗传相似系数大于或等于0.85的遗传冗余,获得84份品种(系)的核心种质,其中圆果种60份和长果种24份。比较84份核心种质与300份种质的农艺性状变异系数及Shannon-Wiener指数发现,两者之间相差不大,表明遴选的84份核心种质可以最大限度代表300份黄麻种质资源的遗传多样性加以利用和保存。     

黄麻产量和纤维品质性状的相关遗传进度与选择指数

研究了我国南方5省黄麻地方品种与产量和品质有关的12个数量性状的相关遗传进度与选择指数及其相对效率。结果表明:在一定的选择强度下,通过分枝高度间接选择单株干皮重的遗传进度最高,相对效率超过对单株干皮重的直接选择。对纤维支数的间接选择,仍以分枝高相对效率较高,但间接选择的效率不如直接选择的高。按单一性状选择指数计算单株产量的遗传进度,结果与相关遗传进度的研究完全一致;2个或2个以上性状选择指数计算的单株产量遗传进度都大于所含的单一性状;当选择指数方程包含了分枝高和单株干皮重后,即使再增加选择因素,其相对效率提高甚微。