共查询到20条相似文献,搜索用时 15 毫秒
1.
2.
3.
4.
7.
8.
9.
Karen W. Holmes 《Landscape Ecology》2008,23(8):1001-1002
10.
11.
12.
N、P、K是果树生长发育的三大基本元索,它们在植物体内的含量及其变化直接影响果树生长发育和结果。1984~1985年通过对李树的组织分析,研究了N、P、K在李树年周期生长中的变化规津,为李树的栽培管理措施提供了可靠的依据。 材料和方法 实验在南京市夹岗果园进行,选丰产树和营养生长较旺的低产“黄皮李”各三株,株龄17年生。上午8~10时取样,采取树冠外围不同方位的1年生营养枝和花束状短果枝.去芽后将营养枝的韧皮部和木质部分开,分别烘干粉碎,贮于干燥器中备用。 测定方法:全氮用凯氏定氮法,磷用矾矾钼法,钾用火焰光度计法。 结果与分… 相似文献
13.
《园艺学报》1993,(3)
Emc匕ofRootslock on山e Grow山,Frul0ng and Leaf*且neral Content ofPonkan Mandarln Zhuang Ylmel,Wang Renll,Xle Zhlman,Chen Llxuan,and Xu Wenbao(209)Effects of PP333 on Phenolles Synthesis and Fruit Growth ot Pears……………………… JuZhlguo,Yuanyongbing,LluChengllan,DaiHongyi,andLIZhijun(216)Sludies on the Rind Color Hered!ty of Citrus……………………… Chen Llgeng,Chen Keling,LI inn,and Hu Yunquan(221)A Preliminary Study on Cultlvar Resources ofPrunus Mume In Hunan the Sta… 相似文献
14.
白樱桃是1997年在嫁接李子剩下的毛樱桃砧木苗中发现的,当时这些砧木苗已在原地生长了3年,均已结果,其中一株结的是白色果实,就单独呵护,并进行繁殖。1果实经济性状果实洁白如玉,晶莹似珠,呈半透明状。平均单果重1.8g,比毛樱桃重0.8g。在七八成熟时就泛着珍珠般的光泽,直到成熟 相似文献
15.
最近各地频传日本客商要高价收购A.b.M菇.一些消息灵通的菇友到处打听这一新的致富信息.但国内知之者甚少,试种者秘而不传.使之越加神秘.为服务生产,避免盲目性,特作一些介绍.A.b.M菇是柏拉(氏)蘑菇弗拉丁学名的缩写.日本商品名为ヒメマツクケ(姬松茸,中文即小松菇之意).该菇原产于北美南部(加利福尼亚、佛罗里达)和南美北部(巴西、秘鲁),是海岸地带草场上发生的一种食用 相似文献
17.
18.
枳Poncirus trifoliata(L.)Raf.的种质资源 总被引:3,自引:0,他引:3
枳Poncirus trifoliata(L.)Raf.的种质资源郭天池,陈全友,叶荫民,杜宜秀(中国农业科学院柑桔研究所重庆630712)枳属(Poncirus)是重要的柑桔近缘植物。本属为单种属,我国原产,极耐寒,对某些柑桔病害具高度的抗耐遗传特... 相似文献
19.
笔者根据罐头加工标准和市场鲜售趋势,经过三年的试验,筛选出了子实体色白、出菇整齐、菌盖圆整、不易开伞、产量高等商品指标优于“三明一号”的S.F.V—9菌株。现报导于下: 一、生物学特性 1.在PDA培养基上的形态:S.F.V—9菌株菌丝白色,绒毛短而较松,粉孢子极少。 相似文献
20.
T. Wallace 《The Journal of Horticultural Science and Biotechnology》2013,88(2):184-198
SummaryGrafting is a suitable method to control soil-borne diseases in melon (Cucumis melo L.) crops. To date, several Cucurbita species and their inter-specific hybrids have been tested as rootstocks. However, graft-scion incompatibility and lower fruit quality have prevented their commercial use. The wild accession ‘Pat 81’ ssp. agrestis of C. melo is highly resistant to Monosporascus cannonballus Pollack et Uecker root rot, and develops a root system that is more suitable to withstand infested soils than that of cultivated melon. The potential of ‘Pat 81’ as a rootstock for melons (e.g., ‘Piel de Sapo’ type, C. melo ssp. melo) compared with the popular rootstock ‘RS 841’ (Cucurbita maxima Cucurbita moschata) has been evaluated here. The response of grafted plants to Monosporascus root rot disease, and rootstock effects on plant performance and fruit quality have been investigated using both classical methods and modern technologies (e.g., root image analysis and real-time PCR). The results indicate that, during infection, the root system of ‘Pat 81’ adapts to the needs of the aerial part of the ‘Piel de Sapo’ scion, displays a high level of resistance to M. cannonballus (similar to ‘RS 841’), and provides the plant with more healthy roots, with a higher root/vine biomass ratio compared with non-grafted ‘Piel de Sapo’. In addition, ‘Pat 81’ rootstock retains its favourable root structure (i.e., larger total length and root area) to withstand soil stress. In healthy soils, ‘Pat 81’ rootstocks had less effect on fruit quality than ‘RS 841’, leading to a lower percentage of non-marketable products. The high resistance of ‘Pat 81’, and its reduced effect on fruit quality, point to it as a good rootstock for the grafting of melons to resist M. Cannonballus infested soils. 相似文献