共查询到20条相似文献,搜索用时 203 毫秒
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重庆地区葡萄避雨栽培生产技术 总被引:1,自引:0,他引:1
重庆多雨的气候特点使避雨栽培成为当地葡萄栽培的重要形式,通过从品种选择、土壤改良、架式培育、设施搭建、栽培管理等方面对避雨栽培的关键技术进行研究,总结出一套避雨栽培的生产管理技术,对避雨栽培成为当地葡萄栽培的主推技术并进行大面积推广应用提供了重要的技术支撑。 相似文献
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我国林下食用菌栽培管理技术研究 总被引:1,自引:0,他引:1
本文介绍了我国林下食用菌栽培管理技术研究现状,归纳了目前林下栽培食用菌种类、栽培基质、栽培林地、栽培模式、温湿度调控和病虫害防治等方面的管理技术,以期为林下食用菌栽培提供理论参考和技术支持。 相似文献
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针对陇南地区的自然条件,对油橄榄栽培过程中的品种选择、栽培条件、扦插育苗技术、栽植技术及田间管理技术等方面进行了详细的介绍,并提出了一套油橄榄栽培管理技术措施,为进一步提高油橄榄栽培智理水平,提高油橄榄产量,尽快使油橄榄在该地区形成产业而提供技术保障。 相似文献
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通过对辽东山区刺龙牙4种典型栽培模式(林下栽培模式、林窗栽培模式、林缘栽培模式、造林地混交模式)系统的介绍了不同模式下栽培地选择、栽植前清理和整地、苗木栽植、林地及树体管理、采收相关技术,为提高刺龙牙单位面积产量、质量和广大林农提供技术支撑。 相似文献
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膜荚黄芪是一种重要的中草药,为种植户带来了可观的收益。通过对膜荚黄芪生物学特征、栽培影响因素分析,对其栽培管理技术进行总结,为地方推动黄芪人工栽培集约化、产业化栽培的健康发展提供技术支撑。 相似文献
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王桂清 《绿色中国(A版)》2002,(1):58-58
菊苣为菊科菊苣属多年生植物,具有适口性好、营养价值高的特点,可作蔬菜食用,也为猪、兔、鹅、鱼、牛、羊、鸵鸟等畜禽所喜食。菊苣利用期长(4~11月),产量高(单产可达 30~45万kg/hm2),易栽培,适应性强,是很有发展前途的优质高产饲料兼经济作物新品种。 相似文献
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水飞蓟别名水飞雉、奶蓟、老鼠勒、乳蓟子,属菊科,为1年生草本药用植物,以瘦果入药。水飞蓟为优良的护肝药物,含主要有效成分为水飞蓟宾、异水飞蓟宾、水飞蓟宁和水飞蓟亭,具有抗御肝病毒、改善肝功能、利胆、清热解毒、保脑、静脑和抗辐射等功能。水飞蓟栽培不择土壤条件,抗旱抗寒能力强。生育期为160d左右,春种秋收,管理简单,经济效益较高,现将北方地区水飞蓟栽培关键技术介绍如下: 相似文献
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Selection of female parents with high fertility and high combining abilities for cross-breeding Populus tomentosa 总被引:1,自引:0,他引:1
To select maternal parents with high fertility and high combining ability during cross breeding of Populus tomentosa Carr., the ploidy level of 75 female clones was determined using flow cytometry. In addition, genetic variations and phenotypic correlations of seed traits and early growth traits, as well as the general combining ability(GCA) for seedling height(SH) and basal diameter(BD) of all diploid half-sib families were examined. A total of 26 natural triploid clones were identified. For all diploid families, family effects were significant for inflorescence length(IL), thousand kernel weight(TKW), seedling emergence rate(SER), and for SH and BD. There was a positive correlation between TKW and other traits,excluding IL. The seed-bearing coefficient(NS 9 SER)ranged from zero to 32.4%. Clones 3-10-2, 2-8, 3119,3206, and 3-10-1 had the best performance of the GCA for SH and BD. Based on the fertility and GCA for SH and BD, clone 3-10-2 and clone 3119 could be used as female parents for controlled cross-breeding of P. tomentosa. 相似文献
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本文针对高层建筑设计中常出现的具体问题从经济、合理的角度阐述了作者的个人观点,有 参考价值,供设计同行借鉴。 相似文献
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Method for measuring viscoelastic properties of wood under high temperature and high pressure steam conditions 总被引:3,自引:0,他引:3
A method for measuring the viscoelastic properties of wood under high temperature and high pressure steam was developed using a testing machine with a built-in autoclave. A newly developed load cell capable of resisting a steam pressure of 16kgf/cm2 and a temperature of 200°C was installed in the autoclave. This load cell could be used to determine precisely the loads while steaming at temperatures from 100°C to 200°C. In addition to load-detection problems, it was necessary to avoid the nonuniform thermal degradation of wood during the measurement process under steaming at high temperatures. This nonuniform degradation could be minimized by shortening the time required for the wood to attain thermal equilibrium using specimens conditioned to the fiber saturation point. According to this method, a stress relaxation curve for sugi (Cryptomeria japonica D. Don) wood being compressed while steaming at 180°C was obtained. The stress was seen to decrease rapidly with time, reaching almost zero at 3000s. 相似文献
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几年来,根据高效优质生态林业建设的需要,东辽县从解决思想认识、抓好种苗繁育、依靠政策倾斜,增加科技含量,积极示范引导等工作措施入手,加快了全县树种结构调整步伐并取得较好成绩。 相似文献
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从建筑设计的角度对高层建筑防火的规划、平面、空间、构造及相关专业的协调作了简明地阐述。这些知识是建筑设计人员必须掌握的。有一定的参考价值。 相似文献
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高纯度竹醋液的生产技术 总被引:1,自引:0,他引:1
通过对炭窑、炭材、燃料、收集工艺、储存条件和精制方法等的分析研究。结果表明:在砖土窑里用无化学污染,立地条件一般的老龄竹、竹材加工剩余物作燃料,收集温度90~160℃,静置8个月,再经精馏处理,能获得高纯度竹醋液。该竹醋液为棕黄色透明的液体,烟焦味淡,密度1.001g/cm3~1.008g/cm3,pH值2.6~3.2,有机酸含量7.5%~10.0%,甲醇和苯酚含量均小于0.01%,可溶解焦油含量0.5%~2.0%。 相似文献