引种法国海岸松种子萌发试验研究

通过对从法国引进的海岸松种子进行千粒重测定,认为法国海岸松种质均一,变异系数小;通过对引进种子在试验室及苗圃地不同处理情况下进行萌发试验,可为日后海岸松引种试验提供基础数据。     

浅谈烟台市无公害蔬菜生产的现状及对策

蔬菜的质量和安全日益受到人们的关注,无公害蔬菜已成为蔬菜生产的发展方向。本文简述了无公害蔬菜的概念,分析了烟台市无公害蔬菜的生产现状及存在问题,提出了无公害蔬菜生产的措施与对策,以期为烟台市无公害蔬菜的生产提供参考。     

关于推进水产养殖用药科学化管理的探讨

我国渔药市场存在着营销秩序混乱、药品质量良莠不齐、水产养殖滥用药等问题。应从完善制度、加强管理、改进技术、提高素质几个方面入手，对渔药的生产、经营、使用每个环节实行全程质量监控，保证水产养殖用药质量。     

笼底材料、密度和性别组群对肉鸡胸囊肿发生及胸肌成分的影响

该研究采用了三因素三水平的正交试验设计，就笼底材料、饲养密度、性别组群等三因素对3～6周龄笼养AA肉仔鸡发生胸囊肿及对其胸肌成分的影响进行了研究。结果表明：铁丝笼底、高饲养密度(17.25只/m²)、公鸡组的发病率最高，平均达34.09%，并显著高于其他组(P<0.05)。铁丝笼底显著高于塑料和竹竿笼底(P<0.05)，高密度(17.25只/m²)显著高于低密度(10.98只/m²)(P<0.05)，笼底材料是导致胸囊肿发病的主要环境因素，而性别组群对其无显著影响(P>0.05)。不同笼底下胸肌水分和蛋白质含量以竹竿笼底的含量最高，铁丝笼底下的胸肌蛋白含量最低(P<0.05)。胸肌脂肪则不受笼底、密度和性别组群的影响。因此，该试验表明，竹竿笼底和塑料笼底材料可降低笼养肉仔鸡胸囊肿的发病率，有利于提高其胸肌品质。     

Interactive effects of organic fertilizer, CaSO4 and amino acid Ca on Fuji apple in Burozem soil in China

A two-year trial was conducted to test the interactive effects of special-for-apple organic fertilizer, CaSO₄, and amino acid Ca on Fuji/Balenghaitang (Malus robusta Rehd.) rootstock in Burozem soil in China. Total Ca, exchangeable Ca, and fruit Ca were significantly improved by the soil application of CaSO₄ with the highest exchangeable Ca and fruit Ca observed in Fuji apple trees treated at the rate of 3.5 kg CaSO₄ per tree. 3.5 kg CaSO₄ was divided into two applications, with first application in the first month after full bloom, and the second in the second month after full bloom in summer, progressively to improve fruit Ca concentration. Dividing CaSO₄ into two applications in combination with organic fertilizer or amino acid Ca spray, proved to be more effective on improving the fruit Ca concentration, with the highest level of 179.17 mg/kg FW in Fuji apple trees treated with 2 kg CaSO₄ applied and amino acid Ca sprayed in the first month after full bloom, 1.5 kg CaSO₄ applied in summer, organic fertilizer applied in winter. Organic fertilizer applied in winter alone remarkably improved the fruit Ca concentration, as well as storage Ca in roots and stems, and the best effect was observed in Fuji apple trees which were supplemented organic fertilizer (10 kg) in winter and CaSO₄ (1 kg) in the first month after full bloom per tree. The effect on Ca increment became less pronounced when the amount of organic fertilizer reached 15 kg or CaSO₄ was more than 3.5 kg per tree. There was a positive correlation between the Ca/Mg ratio in soil and fruit, exchangeable Ca, and fruit Ca concentration, while a negative correlation was observed between the N/Ca ratio in fruit, available P, available K in soil, and fruit Ca concentration. Both N/Ca ratio and Ca/Mg ratio in fruit were affected by different fertilization regime, and bitter pit incidence at the end of storage kept acceptable only if N/Ca < 17 and Ca/Mg ≥ 7 at harvest. The commercial fertilization regime turned out to be organic fertilizer in combination with CaSO₄ applied in soil in winter, amino acid Ca sprayed in the first month after full bloom, and CaSO₄ applied in soil in summer. __________ Translated from Journal of Fruit Science, 2007, 24(1): 6–10 [译自: 果树学报]     

天达-2116对牛蒡白粉病的研究与应用

通过4种叶面肥在牛蒡上的应用试验,结果证明,天达-2116植物生长营养液对牛蒡增产效果显著,改善了牛蒡的品质,提高了牛蒡对白粉病的抗性,为山东省制定出口牛蒡良好农业操作规范(GAP)提供科学依据.为提高农产品出口量、增加效益提供参考.     

笼养肉仔鸡生产性能及其胴体品质影响因素的研究

该本文采用三因素三水平正交试验设计，就笼底材料、饲养密度、不同性别组群下3～6周龄AA肉仔鸡的生产性能及其胴体品质进行研究。结果表明：竹竿和塑料笼底下肉仔鸡的胴体品质以及笼养密度11 ～14只／m²下的生产性能较高，以塑料笼底、低密度和公鸡单饲组的肉仔鸡总增重最高，达1.82kg。笼底材料对增重、饲料转化率、屠宰率、腹脂率以及胸肌纤维直径没有影响，但铁丝笼底会导致胸囊肿发病率升高。高饲养密度下能显著降低肉鸡增重和饲料转化率，但肉仔鸡的屠宰率有所增加；而低饲养密度有利于胸肌纤维直径的增加。单饲母鸡的腹脂率显著高于单饲公鸡和公母混群饲养鸡的腹脂率。     

有机苹果生产技术的研究

根据国家环境保护总局发布的有机食品生产技术规范,从基地选择、品种选择、土肥水管理、整形修剪、花果管理、病虫害防治等方面研究了适合蓬莱市的有机苹果生产技术。采用物理方法和农业方法防治病虫害,增施无污染的有机肥及果园生草改良土壤等技术措施,在苹果生产中不施用化学合成的农药、化肥、生长调节剂等物质,生产出有机苹果。     

刺参池塘养殖系统中发酵饲料的制作与投喂

将海带粉、扇贝边粉、豆粕、虾粉、马尾藻粉按照40∶18∶20∶7∶15的配比混合,经浸泡、研磨等预处理后,加入0.25%～0.5%的水产诱食酵母,发酵72h。SDS-PAGE凝胶电泳结果显示,经过发酵处理后,饲料中的大分子蛋白发生降解。按照刺参体重3%的投喂量进行为期50d的投喂实验,结果表明,发酵饲料组刺参的生长明显优于普通饲料组(未发酵饲料),可见发酵饲料能够更好地满足刺参健康、快速生长的需要,具有良好的市场潜力。     

The Effect of Spraying Concentrated Biogas on Growth and Physiological Characteristics of Cotton Seedling

[Objective] The effect of concentrated biogas slurry on growth and physiological characteristics of cotton seedlings was studied in this experiment, and theoretical basis for the rational application of concentrated biogas slurry was provided. [Method] Potted cotton seedlings was sprayed by five different dosages of concentrated biogas slurry, the impact of different spraying quantity (163 mL·hm^－2, 326 mL·hm^－2, 489 mL·hm^－2, 668 mL·hm^－2, 815 mL·hm^－2) after spraying time (after spraying 2nd day, 4th day, 6th day) on cotton seedlings growth and physiological indexes were studied. [Results] The results showed that the suitable quantity of spraying of concentrated biogas slurry had promoting effect to the cotton growth and development, the excess concentrated biogas slurry could inhibit the growth of cotton seedlings. The plant height, dry weight per plant and leaf area of spraying 489 mL·hm^－2 processing are the highest, the average of two batches on the 6th day after spraying are 21.15%, 35.95%, 18.84% higher than CK, respectively. Spraying concentrated biogas slurry can improve cotton seedlings chlorophyll content, soluble sugar contents, soluble protein content. Spraying 489 mL·hm^－2 processing is the highest in both batches, the average of two batches is 18.84%, 24.03%, 3.16% higher than CK, respectively. The result of concentrated biogas slurry onseedlings leaves took effect quickly, especially in 0～4th days. [Conclusion] It is concluded that the suitable amount of concentrated biogas slurry has a positive effect on the growth and physiological characteristics of cotton seedlings, which is beneficial to the formation of strong seedlings of cotton and provides the basis for the later growth of cotton.