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宁城县林业种苗育苗工作的探讨 被引量:1
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作者 窦彩虹 《农技服务》 2013年第5期541-541,543,共2页
从种苗生产基地的形成初具规模;科技兴种,种苗品种增多;依法育苗,林业育苗市场秩序明显好转;夯实基础,全力实施种苗苗木在工程项目中的合理利用;深化林业种苗育苗制度的改革,保证了苗木品种的合理调配等方面就宁城县林业种苗育苗工作进... 从种苗生产基地的形成初具规模;科技兴种,种苗品种增多;依法育苗,林业育苗市场秩序明显好转;夯实基础,全力实施种苗苗木在工程项目中的合理利用;深化林业种苗育苗制度的改革,保证了苗木品种的合理调配等方面就宁城县林业种苗育苗工作进行了探讨。 展开更多
关键词 林业 种苗育苗 宁城县
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硒代蛋氨酸对草莓种苗繁育和子苗生长的影响
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作者 祁泽阳 张彦萍 +4 位作者 刘海河 朱立保 赵菁婉 康凯伦 曹艳霞 《河北农业大学学报》 CAS CSCD 北大核心 2024年第4期65-69,75,共6页
为探究不同浓度的硒代蛋氨酸对草莓育苗的影响,本研究以‘红颜’草莓品种为试材,在草莓母株匍匐茎发生初期,通过叶面喷施4种不同浓度(5、10、20、40 mg/L)的硒代蛋氨酸,以清水作为对照(CK),研究了这些处理对草莓母株生长、匍匐茎抽生数... 为探究不同浓度的硒代蛋氨酸对草莓育苗的影响,本研究以‘红颜’草莓品种为试材,在草莓母株匍匐茎发生初期,通过叶面喷施4种不同浓度(5、10、20、40 mg/L)的硒代蛋氨酸,以清水作为对照(CK),研究了这些处理对草莓母株生长、匍匐茎抽生数量、子苗质量、光合特性以及氮代谢的影响。结果显示,叶面喷施不同浓度的硒代蛋氨酸能显著促进草莓母株的生长,增加匍匐茎的抽生数量和子苗数量,提升子苗质量,并显著提高了子苗的光合色素含量、净光合速率、气孔导度和蒸腾速率以及子苗的硝酸还原酶(NR)和谷氨酰胺合成酶(GS)的活性等生理指标,子苗的茎粗、叶面积、根系活力和壮苗指数也得到显著提升。表明,在草莓母株匍匐茎发生初期,叶面喷施适宜浓度的硒代蛋氨酸,通过促进草莓母株的光合作用和氮代谢的协同效应进而提高草莓母株的繁苗数量和子苗的质量。以20 mg/L的硒代蛋氨酸处理效果最为显著。 展开更多
关键词 草莓 硒代蛋氨酸 种苗育苗 光合特性 氮代谢
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Effects of Shading Degree on Storage Rate and Growth of Phoebe bournei Seedlings in Fields 被引量:4
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作者 吴际友 黄明军 +6 位作者 陈明皋 董春英 舒瑶 吴其军 程勇 刘球 王旭军 《Agricultural Science & Technology》 CAS 2014年第9期1567-1570,共4页
In the research, four shading treatments were set, including the treatments with shading degrees at 0, 40%, 60% and 70%, in order to explore storage rate and seedling growth of annual Phoebe bournei. The results showe... In the research, four shading treatments were set, including the treatments with shading degrees at 0, 40%, 60% and 70%, in order to explore storage rate and seedling growth of annual Phoebe bournei. The results showed that the storage rate is growing upon shading degree. In the research, for example, storage rate reached the peak with the shading degree at 70%, and only 42.2% with shading degree at 0. In addition, seedling height and ground diameter showed extremely significant differences among treatments, and the treatment with shading degree at 60% was the best. 展开更多
关键词 Phoebe bournei Shading degree Seedling storage rate Seedling height Ground diameter Sowing and seedling cultivation in fields
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Effect of Acorn Burying Depth on Germination, Seedling Emergence and Development of Quercus aliena var. acuteserrata 被引量:4
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作者 郭柯 李睿 《Acta Botanica Sinica》 CSCD 2001年第9期974-978,共5页
Acorns of Quercus aliena var. acuteserrata Maxim. are often predated by small mammals and birds in natural forests. These animals not only eat the acorns during the acorn ripening season, but also cache and hoard most... Acorns of Quercus aliena var. acuteserrata Maxim. are often predated by small mammals and birds in natural forests. These animals not only eat the acorns during the acorn ripening season, but also cache and hoard most of the remaining acorns on the forest floor in the soil for their future use. These buried acorns form the main seed resource for regeneration. Burying depth is potentially important for germination and for seedling development. The effects of burying depth on germination and seedling development in relation to acorn size were studied in an experiment, in which acorns were planted at 6 cm-, 12 cm- and 18 cm-depth. The experimental results showed that fewer acorns germinated as burying depth increased. From the deeply buried acorns fewer seedlings emerged at later time than from those acorns buried less deeply. They appeared to have more difficulties to emerge above-ground than die seedlings from shallowly buried acorns. The deeply buried acorns and their seedlings also appeared to be more susceptible to rot. Acorn size did not significantly affect germination and emergence of the seedlings. As early emerged seedlings had longer developmental periods in their first growing season, and therefore grew better than die late emerged seedlings, seedlings from die shallowly buried acorns took the advantage. 展开更多
关键词 acorn burying depth acorn size cache and board animal predation seedling establishment
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Study on Seedling Techniques of Artocarpus nanchuanensis
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作者 谭小梅 周益权 +3 位作者 邓安桂 刘燕庭 彭勇 周小舟 《Agricultural Science & Technology》 CAS 2015年第12期2754-2757,2848,共5页
[Objective] This study aimed to solve the problems of low seed germina- tion rate and difficult bareroot seedling transplanting in artificial cultivation of Arto- carpus nanchuanensis, a native species in China. [Meth... [Objective] This study aimed to solve the problems of low seed germina- tion rate and difficult bareroot seedling transplanting in artificial cultivation of Arto- carpus nanchuanensis, a native species in China. [Method] Under different seed treatment and seedling style, the seed germination rate and seedling emergence rate of A. nanchuanensis were investigated. [Result] tn both sand bed and direct sowing yellow soil, the seed germination rate, seedling survival rate and seedling emergence rate in the treatment II were all higher than those in the treatments I and III. The average seed germination rate, seedling survival rate and seedling emergence rate in sand beds were 1.5%, 16.27% and 13.95%, respectively higher than those in direct sowing yellow soil. The average seedling emergence rate in sand beds was 2.46% higher than that in containers. Among the 8 kinds of light matrix formulas, the growth of seedlings in the formula VIII was best. In the three treatment groups, the seedling emergence rates, seedling heights and ground diame- ters in the formula VIII were all significantly different from those in the other formu- las. The seedling growth in the formula I and III ranked second, while the seedling emergence rate, seedling height and ground diameter in the formula VII were the poorest. [Conclusion] If conditions allow, the formulas I (meadow soil:vermiculite:yel- low soi1=5:3:2), III (meadow soil:perlite:yellow soi1=5:3:2) and VIII (peat:forest top soi1=6:4) should be promoted in seedling with light matrixes. 展开更多
关键词 Artocarpus nanchuanensis Seed treatment Seedbed seedling Container seedling Direct sowing yellow soil
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Establishment of Three Breeding System of Virus-free Strawberry Plantlet in Infantry Regiment of the Twelve Division 被引量:2
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作者 史芳芳 《Agricultural Science & Technology》 CAS 2014年第7期1076-1078,共3页
Shoot-tip culture of strawberry is the most important way to get virus-free plants.Moreover,detoxification and rapid propagation are the key techniques for producing high-quality seeds and seedlings massively and rapi... Shoot-tip culture of strawberry is the most important way to get virus-free plants.Moreover,detoxification and rapid propagation are the key techniques for producing high-quality seeds and seedlings massively and rapidly and achieving the high-quality,high-yield and high-efficiency development of strawberry industry.We have recently produced virus-free strawberry seedlings by combing tissue culture technology and stolon-reproduction method and this technology has been widely used.In addition,a relatively perfect three breeding system of virus-free strawberry seedlings was established after production practices,guaranteeing the supply of high-quality seeds and seedlings and technical support for strawberry industry in corps. 展开更多
关键词 STRAWBERRY Virus-free seedling Tissue culture Seedling breeding
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Effects of Extracts from Albizia (Fabaceae) Endemic Species of Madagascar on Vegetable Seedling Development 被引量:1
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作者 Danielle Aurore Doll Rakoto Ranjana Randrianarivo Mounidati E1-Yachouroutui Alain A. Arisoa NoelinirinaRaharisoa Noelitiana Rakotondrasoa, Pascaline Raoniharisoa Victor Jeannoda 《Journal of Chemistry and Chemical Engineering》 2012年第4期313-322,共10页
The effects of extracts from five Albizia (Fabaceae) endemic species from Madagascar (A. arenicola, A. boivini, A. bernieri, A. polyphylla and A. tulearensis) were tested on vegetable seedling development. Crude e... The effects of extracts from five Albizia (Fabaceae) endemic species from Madagascar (A. arenicola, A. boivini, A. bernieri, A. polyphylla and A. tulearensis) were tested on vegetable seedling development. Crude extracts were obtained through cold or hot extraction methods on dried powdered seeds, seed teguments, leaves or empty pods. They were thereafter purified using techniques based on physicochemical properties of active substances. Assays were carried out on seedling growth of Monocotyledons and Dicotyledons representatives. Results showed that all extracts exerted significant dose dependent inhibition on epicotyl and hypocotyl growth. However, some extracts exhibited a slight stimulation effect at low doses. Moreover, A. arenicola crude extract (E23) slightly inhibited axillary bud growth, while A. tulearensis crude extract (ET1) showed a stimulation effect. According to preliminary phytochemical screening results, these effects might be due to saponins or alkaloids. 展开更多
关键词 Albizia EXTRACTS SAPONINS ALKALOIDS INHIBITION seedling development Madagascar.
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海黍子增殖技术的初步研究
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作者 王翔宇 徐智广 +2 位作者 李莉 王晓红 吴海一 《海洋湖沼通报》 CSCD 北大核心 2020年第2期160-165,共6页
在2016年进行了基于人工育苗的海黍子增殖研究。在烟台长岛挑选生殖托刚生成的种藻,平挂于近海暂养,待生殖托成熟时,运输到青岛崂山育苗场在硬质藻礁上培育幼苗,培育光照控制在水表面9000lx以下,流水培育15d后,幼苗平均密度是20.4株/cm^... 在2016年进行了基于人工育苗的海黍子增殖研究。在烟台长岛挑选生殖托刚生成的种藻,平挂于近海暂养,待生殖托成熟时,运输到青岛崂山育苗场在硬质藻礁上培育幼苗,培育光照控制在水表面9000lx以下,流水培育15d后,幼苗平均密度是20.4株/cm^2。幼苗长至0.4~0.6m时,产生1~3条分蘖,幼苗附着较为牢固时,将附有幼苗的组装型藻礁投放至青岛崂山青山湾,此区域的水文条件无剧烈变化,砂泥底质,无人工底播动物,投放水深为3.5m左右,37d后发现平均附着密度为157株/个藻礁,平均长度1.50cm,6个月后,藻体已长至0.8m左右,并且藻礁上已经附着了石莼、蜈蚣藻等其他藻类。本研究建立了一种幼苗成活率较高和藻体附着牢固的海黍子藻礁增殖方法,获得了良好的增殖效果,可为海黍子藻场构建提供技术支撑。 展开更多
关键词 海黍子 生殖托 人工育苗种苗培育 藻礁 增殖技术
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