共查询到20条相似文献，搜索用时 578 毫秒
1.
2.
3.
4.
5.
当前哈密区域内种植的葡萄中约90%为当地主栽品种无核白.最近几年,随着人们生活水平的不断拉高,对葡萄产品的消费水平也在提高,无核白、木纳格等老品种已不能满足消费者的需求.为了避免更换葡萄品种对果农造成经济损失,同时又能实现更新葡萄品种的目的,我们从2004年开始,开展了葡萄嫁接改造技术试验、示范、推广工作.将根系发达、适应性强,但不能适应市场需求的无核白、木纳格等葡萄树做砧木,以无核紫、白鸡心、红提、优无核、奇妙无核等优质品种作接穗进行了嫁接改造.通过这些年的嫁接试验证明,葡萄嫁接改造后,一是嫁接葡萄产品亲和力好、口感好,而且粒型、颜色、穗型等非常美观;二是保持原有品种的优良特性;三是利用树势、抗性强的品种作砧木,可提高优良品种的适应性和抗逆性;四是嫁接葡萄树表现长势旺、生长快;五是可以加大新品种的推广力度;六是改良原葡萄园的低劣品种;七是能节约购买苗木、田间管理等生产投入;八是嫁接葡萄比定植根插苗结果早、产量高、品质优,一般第二年就挂果,可提前2年进入丰产期. 相似文献
6.
龙眼葡萄在涿怀盆地有悠久的历史,其抗寒性、抗旱性较为突出。为了克服贝达做砧木改接红地球葡萄导致的"小脚病"和"黄叶病"的严重发生,该文研究使用当地的主栽品种——龙眼做砧木嫁接的适期,得出了龙眼葡萄嫩枝嫁接红地球葡萄的最佳适期是龙眼葡萄的花期前后,在张家口涿鹿县为5月下旬至6月中旬。 相似文献
7.
宽甸地区冬季严寒,葡萄苗的培养多采用抗旱的品种或易生根的山葡萄作为砧木品种嫁接繁殖。文章介绍了宽甸地区葡萄苗的硬枝嫁接、绿枝嫁接和扦插育苗技术。 相似文献
8.
<正>当前哈密区域内种植的葡萄中约90%为当地主栽品种无核白。最近几年,随着人们生活水平的不断提高,对葡萄产品的消费水平也在提高,无核白、木纳格等老品种已不能满足消费者的需求。为了避免更换葡萄品种对果农造成经济损失,同时又能实现更新葡萄品种的目的,我们从2004年开始,开展了葡萄嫁接改造技术试验、示范、推广工作。将根系发达、适应性强,但不能适应市场需求的无核白、木纳格等葡萄树做砧木,以无核紫、白鸡心、红提、优无核、奇妙无核等优质品种作接穗进行了嫁接改造。通过这些年的嫁接试验证明,葡萄嫁接改造后,一是嫁接葡萄产 相似文献
9.
发展葡萄生产是北方农牧民增加收入、改善生活的有效途经。嫁接是葡萄品种更新换代和提高抗寒能力的有效方法。采用适应性强且结实量高、品质优的葡萄品种硬枝做接穗，用贝达或山葡萄硬枝做砧木进行嫁接，用木锯末做基质，在农村的火炕上对嫁接苗进行催根。此种葡萄育苗方法简单易行，我们称之为葡萄“硬枝嫁接，火炕催根”技术。 相似文献
10.
11.
以银杏核用品种最优单株"宁银1号"为接穗,对宁化县定植12年的银杏核用低产劣质品种的盛果期幼树进行高位嫁接试验,结果表明:嫁接季节、嫁接方法和接穗的年龄、粗度、性别以及接芽部位与砧木接口粗度对嫁接成活率、当年抽梢长度具有极显著影响,但对抽梢率没有影响。嫁接成活率、当年抽梢长度以春季采用粗度为0.8 cm以上接穗的1年生顶芽、接口粗度1.0 cm砧木、嫁接方法采用截干切接或截干舌接进行高位嫁接效果最好;雌株嫁接成活率达98%以上,当年抽梢率达100%,抽梢长度达50 cm以上;雄株成活率达80%以上,当年抽梢率达100%,抽梢长度达40 cm以上。 相似文献
12.
为给完善核桃芽接繁育技术提供参考,选用山东地方品种‘鸡爪绵’核桃实生苗为砧木,采用大方块芽接方法嫁接早实核桃品种‘香玲’和‘元林’,利用扫描电镜观测其砧穗组合体愈伤形成和嫁接口愈合过程。结果表明:2个早实核桃品种嫁接愈合过程相似,嫁接后第6天砧穗嫁接体愈合完成。第1天,嫁接口接穗上有愈伤组织细胞产生,同时有少量无机、有机分泌物或晶体;第2天,嫁接口处产生大量愈伤组织细胞,‘香玲’和‘元林’接穗愈伤组织细胞直径分别为17.5~35.0和14.1~33.3μm,‘元林’接穗愈伤细胞数量明显多于‘香玲’;第4天,愈伤细胞延伸分化出明显的愈伤组织,愈伤组织不断分裂;第5天,砧穗愈伤组织相互交叉连接;第6天,接穗和砧木间的维管束已重新连接,嫁接愈合完成。 相似文献
13.
14.
Hydraulic conductance characteristics of peach (Prunus persica) trees on different rootstocks are related to biomass production and distribution 总被引：1，自引：0，他引：1
We investigated hydraulic conductance characteristics and associated dry matter production and distribution of peach trees grafted on different rootstocks growing in the field. A single scion genotype was grown on a low ('K146-43'), an intermediate ('Hiawatha') and a high ('Nemaguard') vigor rootstock. 'K146-43' and 'Hiawatha' rootstocks had 27 and 52% lower mean leaf-specific hydraulic conductances, respectively, than the more vigorous 'Nemaguard' rootstock. Tree growth rates and patterns of biomass distribution varied significantly among rootstocks. Mean dry mass relative growth rates of trees on 'K146-43' and 'Nemaguard' were 66 and 75%, respectively, of the rates of trees on 'Nemaguard', and the scion to rootstock dry mass ratios of trees on 'K146-43' and 'Hiawatha' were 63 and 82%, respectively, of the ratio of trees on 'Nemaguard'. Thus, differences in dry matter distribution between the scion and rootstock, which may be a compensatory response to the differences in leaf specific hydraulic conductance among rootstocks, appeared to be related to differences in growth rates. Correspondingly, there was a positive linear relationship between the scion to rootstock dry mass ratio and the rootstock to scion hydraulic conductance ratio when conductance was normalized for dry mass. This study confirms that rootstock effects on tree water relations and vegetative growth potential result, at least in part, from differences in tree hydraulic conductance associated with specific peach rootstocks. 相似文献
15.
16.
Seed orchards of Leucaena were established at two experimental sites in Hawaii to produce either triploid or tetraploid interspecific
hybrid seed by interplanting clonal self incompatible diploid (L. diversifolia, L. esculenta) or tetraploid (L. pallida) species
with self- compatible L. leucocephala lines and the F1 hybrid of L. diversifolia (2n = 4x) × L. leucocephala. The seed parents
were grafted onto three seedling rootstocks (L. diversifolia (2n = 4x), shrubby L. leucocephala, and giant L. leucocephala)
to compare rootstock effects on scion growth. This paper reports on the effects of rootstock on scion growth during the first
year based on total truck cross sectional area, height growth, and crown habit. In the triploid seed orchard, rootstock significantly
affected the growth of four of the six clones, while in the tetraploid orchard the growth of two of the five clones was significantly
affected by rootstock. Crown habit was independent of rootstock. Our study suggests that rootstock effects depend on the specific
scion and rootstock combination, and site.
This revised version was published online in June 2006 with corrections to the Cover Date. 相似文献
17.
不同地径砧木对山桐子嫁接苗成活及生长特性的影响 总被引：2，自引：0，他引：2
为给山桐子丰产栽培技术提供参考依据,就不同地径砧木对山桐子嫁接苗生长特性的影响情况进行了试验研究。结果表明:(1)山桐子苗嫁接成活率为86.00%~93.20%,保存率为82.63%~90.43%;地径为7~9 cm的大规格砧木组嫁接苗的成活率和保存率均显著高于3~5 cm砧木组的。(2)地径为7~9 cm的大规格砧木组嫁接苗的接穗粗度、树高、冠幅、枝条数量、最长枝长度、最长枝粗度、叶长、叶宽、单叶面积、单株叶片数量和叶面积指数均显著大于地径为5~7 cm的中规格和3~5 cm的小规格砧木组的,而不同地径砧木对最短枝长度、最短枝粗度和叶柄长度的影响均不显著。(3)接穗粗度、树高、冠幅、枝条数量、最长枝长度、最长枝粗度、叶长、叶宽、单叶面积、单株叶片数量、叶面积指数与砧木地径间均存在显著正相关关系。文中因此认为,山桐子砧木的粗度对嫁接苗木的生长具有重要的影响。 相似文献
18.
19.
Both scion and rootstock clones significantly influenced scion elongation and concentrations of nitrogen and phosphorus in the scion foliage. Scion clone was the more important determinant. Scion clone × rootstock clone interactions were not significant. The ability of a clone to elongate as a scion was not correlated with its capacity to promote or retard scion elongation when used as a rootstock. Genetic differences in foliar nutrient concentrations appeared to reflect levels of nutrient demand, rather than the ability of roots to absorb nutrients. Nutrient demand of the rootstock can also explain negative correlations between nitrogen levels in rootstock clones and levels of both nitrogen and phosphorus in the scions. There was no significant relationship between scion elongation and foliar nitrogen concentrations of either rootstock or scion. The weak relationship between scion elongation and concentration of phosphorus in the rootstock apparently resulted from tissue dilution. 相似文献