大果型鲜食枣新品种‘大白铃’

 ‘大白铃’为大果型鲜食枣优良新品种。果实特大, 平均单果质量24. 5 ~ 25. 9 g, 最大80 g,整齐, 外形美观, 品质优良。早实, 丰产, 抗逆性强。     

早熟优质长豇豆新品种‘鄂豇豆2 号’

 ‘鄂豇豆2号’是经有性杂交选育而成的早熟蔓生豇豆新品种。该品种荚浅绿色, 长60 cm,单荚质量18~ 24 g。早熟, 荚商品性状优良, 产量高, 对光周期反应不敏感, 田间疫病、煤霉病、病毒病发病率低, 适宜于春、夏、秋各季栽培, 已在全国大部分省份推广种植成功。     

Variation of Parthenium hysterophorus in response to soil quality: implications for invasiveness

Summary The performance of Parthenium hysterophorus , native to the tropical Americas and invasive to several countries, was evaluated for response to soil quality. Phenological (six stages) and quantitative growth variables [relative growth rates in height (R_h) and diameter (R_d)] were measured every fortnight. Based on harvest data, the variables, root:shoot (R:S) ratio, specific leaf area (SLA), relative growth rate in biomass (R_w), net assimilation rate (NAR) and dry matter allocation to plant components, were determined. High clay content in soils prolonged the rosette stage, enhanced R_h and R_d and hampered root growth, but promoted biomass allocation to shoots. The extreme degree of plant mortality was observed, with only 33.3% individuals surviving to reproduce in the soils with highest clay contents. This appears to be one of the most important findings that certainly has a major bearing on the range of adaptation of the weed. Seed mass declined whereas seed production increased in relatively coarser soils with the exception of nearly pure sand. In soils rich in clay, plants produced a smaller number of larger seeds. These data suggest that variation in fundamental functional traits would enable P. hysterophorus to adjust to a variety of habitat conditions.     

分蘖洋葱的特性及高效栽培技术研究

分蘖洋葱最突出的特性是分蘖性强，生长快，分蘖的多少直接影响分蘖洋葱的产量。试验表明：12-20℃条件最适宜其生长，良好的土壤营养和适宜的环境有利于分蘖洋葱的分蘖生长，获得高产、优质商品。     

广东优质籼稻抗稻瘟病育种研究进展

通过对广东优质籼稻品种抗瘟性研究、抗病品种的系谱分析以及抗病育种实践的回顾，综述了广东优质稻抗性育种历史及现状，剖析了优质稻抗瘟育种存在的问题及相应对策。提出开发利用不同稻作系统的抗病资源，构建遗传多样性丰富的抗病优质种质，延长品种抗性寿命及解决品种优质与抗病的矛盾。     

粉红女士苹果品质特性分析评价

观察测定了粉红女士苹果成熟采收时和常温贮藏后果实的外观、抗性、果实硬度、总酸、可溶性固形物、维生素C、蒸腾失水率、出汁率、果汁密度以及果汁性状;全面分析评价了该品种的外在、内在、贮藏品质和果汁加工特性。结果表明,粉红女士苹果是一个综合性状优良、耐贮藏的鲜食、果汁加工兼用型苹果新品种。     

烯效唑浸种对黄瓜的壮苗效应

研究不同浓度烯效唑浸种对黄瓜幼苗生长发育的影响。结果表明,烯效唑可抑制黄瓜幼苗徒长,使株高降低,比叶重增加,根冠比和壮苗指数增大,叶绿素含量增加,根系活性增强,在形态上和生理上表现出显著的壮苗效应;烯效唑对黄瓜有极显著的增产作用,以20 mg·kg-1处理最佳,促进增产的主要原因是提高了单株结瓜数。     

农村肉狗绿色养殖模式刍议

近年来，农村肉狗养殖成为农民增收致富新的亮点，但也存在着一些误区。本文就农村肉狗养殖现状，分析了存在的主要问题，并提出绿色养殖肉狗的建议与对策。     

花粉多糖注射剂质量标准中几个项目测定

根据中国药典对注射剂的要求,对花粉多糖的蛋白质、鞣质、树脂、草酸盐、炽灼残渣、钾离子、砷盐、重金属含量进行测定,均符合规定,达到质量标准。     

优质牦牛肉肉质的综合评价

2000-2002年对大通牛场40头6月龄不同性别的全哺乳牦牛的肉质进行了综合评价。对供试牦牛肌肉pH、嫩度、肌纤维细度、系水率、肉的贮存损失、肉的煮熟时间、熟肉率和烹饪损失率及肉色等进行了评价，分析了肌肉的化学成分，氨基酸及微量元素含量。结果表明该牦牛肉系水率强，肉的煮熟时间短，肉的贮存损失及烹饪损失较小，肌纤维较细，肉色深红。并具有蛋白质含量高，脂肪含量低及富含各种氨基酸的特点。