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岳西县自1988年开始,陆续引进早鲜、魁蜜、金丰等中华猕猴桃品系和金魁、秦美、海沃等美味猕猴桃品系共29个品种进行栽培试验。1993年后,主栽品种有 相似文献
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金魁猕猴桃温床硬枝扦插育苗 总被引:1,自引:0,他引:1
金魁猕猴桃属于美味猕猴桃系列品种 ,是扦插最难生根的猕猴桃品种 ,通常采用嫁接繁殖。由于金魁猕猴桃丰产、优质 ,近几年苗木俏销。为此 ,于 2 0 0 1、2 0 0 2年冬季我们采用IBA处理插条、温床育苗、大田移栽等技术措施 ,进行了金魁猕猴桃硬枝扦插育苗试验 ,获得了扦插愈合生根率 80 % ,移栽成活率 90 % ,一、二级苗木出圃率 85 %的试验效果 ,同时为解决本所授粉树苗不足的问题。 2 0 0 2年 ,采用“金魁”授粉品种硬毛雄猕猴桃株枝条作插穗 ,武植三号猕猴桃枝条作砧木 ,切接后用IBA处理、温床催根、大田移栽的育苗措施 ,获得嫁接成活率 … 相似文献
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人工辅助授粉对猕猴桃晚熟品种金魁产量的影响试验初报 总被引:5,自引:5,他引:0
“金魁”原代号“金水 - 16- 11”,1992年在农业部产品鉴评会获“希望之光”奖。由于该品种果肉翠绿 ,极耐贮藏 ,富含可溶性固形物、维生素 C和人体必需的 17种氨基酸 ,营养价值高 ,备受消费者的青睐 ,具有很好的市场前景。目前 ,岳西县金魁猕猴桃面积已达 4 2 0 ha,每公顷产量达 3.4万 t。为了提高单位面积产量 ,我们开展了人工辅助授粉试验 ,取得了良好效果。现将猕猴桃晚熟品种金魁人工辅助授粉对其产量影响试验结果报告如下 :表 1 金魁人工授粉方法12 3 45 6 78910A 2 g花粉 +1L水喷授 1次B 4g花粉 +1L 水喷授 1次C 2 g花粉 +1L水 … 相似文献
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猕猴桃的栽培与采收加工 总被引:1,自引:0,他引:1
猕猴桃是原产我国的藤本落叶果树,自新西兰引种获得惊人的成功之后,世界各国竞相栽培。据资料,新西兰目前栽培面积达4,000公顷。日本每年投资5,000万日元发展猕猴桃。另外、美国、澳大利亚、南朝鲜、欧洲及南美各国等,也均在大规模的扩大栽培。 就世界范围来看,栽培猕猴桃是大有可为的。为了给我国发展猕猴桃提供参考,现就栽培与采收、加工技术简要介绍如下: 一、栽培技术 (一)品种选择 在新西兰,栽培较多的猕猴桃雌株品种有艾博特、海沃德、布鲁诺和蒙蒂等;雄株品种有唐木里和马图阿等。目前,以海沃德雌株品种为最好,它果型最 相似文献
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以‘82-11’、‘84-237’和‘84-402’等3个杂种榛优良品系为试材,采用动态监测的方法,研究7年生平欧杂种榛果实生长发育规律。结果表明,3个榛子品系果实重量生长曲线为“慢-快-慢”的“单S”型曲线,其生长过程可分为初始缓慢生长期、快速生长期、第二次缓慢生长期3个阶段。3个榛子品系果仁重量生长曲线为“单S”型曲线,随着果仁的发育,果仁鲜重逐渐增加,果仁重量的增加在果仁发育前期较快,后期较慢。果实发育前期,果实重量的增长主要来自细胞的分裂与膨大,果实发育后期,果实重量的增长主要由果仁的生长引起。 相似文献
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采集白皮松3个新变异类型(盆仙白皮松、瑞王白皮松、9号树)、北京良种基地母树、北京市挂牌古树等共48个样品,应用SSR技术,对上述样品分别进行鉴定和多样性评价。结果表明:同一个变异类型的无性系与其原变异枝之间在所有位点上均不存在差异,说明其无性系及其原变异枝属于相同的基因型,"瑞王白皮松"和其母株(古树152)非变异枝间在SSR—Y5位点上存在差异,"瑞王白皮松"与"盆仙白皮松"在SSR—Y2位点上存在差异。"9号树"在Y2、Y5 2个位点上与"盆仙白皮松"、"瑞王白皮松"不同,而与其母树群体莽山良种基地的母树相同。可以通过上述位点的检测来鉴定3个不同的变异类型。"盆仙白皮松"、"瑞王白皮松"和"9号树"、古树群组、莽山群组间的遗传距离分别为0.021 1、0.011 4、0.081 3、0.063 8。"瑞王白皮松"与"盆仙白皮松"间、"瑞王白皮松"与古树间存在遗传上的差异。参试样品的有效等位基因数(Ne)、Shannon’s信息指数(I)、观测杂合度(Ho)、期望杂合度(He)、Nei’s多样性指数(Nei’s)的平均值分别为1.230、0.302、0.221、0.189、0.197。多样性水平略高于白皮松人工群体而与白皮松天然群体接近,说明参试样品具有较高的遗传多样性水平,具有选择利用的遗传基础较好。 相似文献
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针对目前学生课程设计中"懂而不会"的现象,以设计理论课程教学模式为切入点,提出了"说设计"的教学理念,即由教学生"设计方法知识"转向教学生"说"出设计问题解决的程序、途径和方法等;以培养学生具备"设计方案理论评价加制定工作计划的能力"为教学目标,试图培养学生掌握元学习能力、养成专业设计思维方式和掌握设计方法等;利用智慧技能培养的3个阶段理论,构建出了"3阶段5环节"课程教学模式。 相似文献
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Giuliana Etore do Valle André Luiz Louren??o José Baldin Pinheiro 《Journal of pest science》2012,85(4):431-442
Bemisia tabaci consists of a complex of morphologically indistinct biotypes, varying with respect to their host ranges and ability to transmit plant viruses. Biotype “B” has increased in importance at every growing season in soybean crops in Brazil. The objective was to evaluate B. tabaci biotype B infestations in 24 soybean genotypes, including cultivars of expression for planting and the main sources of insect resistance. The study was performed in a greenhouse with evaluations for adult attractiveness and oviposition preference (free-choice test); these parameters were correlated with trichome density. Three evaluations were carried out, and counts were obtained for number of adults, eggs, and trichomes on the abaxial surface of the leaves. The experimental design consisted of randomized blocks (192 plots). In all three evaluations, “Coodetec 215” was the most attractive to adults; the least attractive cultivars were “IAC 18” (first); PI 274453, “IAC 18,” and D 75-10169 (second); and “IAC 24” (third). As to oviposition preference, “Coodetec 215” showed the highest mean in all evaluations; the lowest means corresponded to “IAC 18” (1st); PI 274453 (2nd); and PI 274453 and L1-1-01 (3rd). No significant correlation was observed between trichome density and oviposition preference and adult attractiveness. Considering all parameters and focusing on commercial germplasm, “IAC 24,” as well as “BRS Barreiras,” “IAC 18,” “IAC 17,” and “IAC 19” can be indicated for planting in regions and/or seasons where B. tabaci biotype B is a problem for soybean production or even in properties where other crops affected by this whitefly are grown simultaneously with soybean or after this legume is grown. 相似文献
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"一池三山"作为中国仙苑式皇家园林的经典山水格局,起于秦、成于汉、传承于后世各朝。其源起与秦汉求仙活动密切相关,又承载着帝王向往仙境的情感诉求,是中国理性思想中天、地、人和谐的真实呈现,具有珍贵的文化与艺术价值。 相似文献
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Baliota Georgia Rumbos I. Christos Athanassiou G. Christos 《Journal of pest science》2018,91(4):1371-1380
In the present work, a lethality index was applied for the evaluation of three insecticides with different modes of action, i.e., thiamethoxam, chlorfenapyr and lambda-cyhalothrin, as surface treatment against adults of Sitophilus oryzae (L.), Oryzaephilus surinamensis (L.) and Tribolium confusum Jacquelin du Val, in laboratory bioassays. The insecticides were applied at their highest label dose, while insect knockdown and mortality were evaluated after 1, 3, 5 and 7 days of exposure to the treated surfaces according to the Standardized Lethality Index, by ranking each insect from “0” to “4,” with “0” corresponding to insects moving normally and “4” corresponding to dead individuals. After the end of the exposure, the surviving insects were transferred to clean, untreated dishes and delayed mortality was assessed after an additional period of 1, 3, 5 and 7 days. Based on the results, initial knockdown was high for S. oryzae after exposure to thiamethoxam and lambda-cyhalothrin even after 1 day of exposure, whereas for longer exposures high mortality levels were recorded. In contrast, in the case of chlorfenapyr knockdown was low after 1 day of exposure; however, high mortality levels were noted after 3 and 5 days of exposure. Similar results were noted for O. surinamensis, which was highly susceptible to all three insecticides tested. The most tolerant insect species to the tested insecticides was T. confusum, since a noticeable number of T. confusum adults were still active at the end of the exposure (7 days). Our results indicate that knockdown is most likely to lead to mortality than to recovery, but there were important differences among the three insecticides tested. 相似文献