共查询到19条相似文献，搜索用时 640 毫秒
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在顺昌县选本世纪初以来陆续高接换种的柑桔生产园,共观察了18种砧穗组合(均以枳为基砧)的亲和性表现.结果表明,温州蜜柑高接卡拉卡拉脐橙、纽荷尔脐橙、天草桔橙和塔罗科血橙,华盛顿脐橙、雪柑和胡柚高接甜春胡柚,朋娜脐橙高接卡拉卡拉脐橙,强德勒红心柚高接琯溪蜜柚,清见高接木索血橙,亲和性均良好;卡拉卡拉脐橙和木索血橙高接强德勒红心柚的亲和性均一般;椪柑和强德勒红心柚高接甜春桔柚,木索血橙高接卡拉卡拉脐橙,未知柚高接纽荷尔脐橙,亲和性均较差;甜春桔柚高接椪柑,朋娜脐橙高接强德勒红心柚,亲和性均差. 相似文献
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1 选育经过 1984年初从日本引进甜春桔柚接穗6枝,当年春季嫁接后获得30株嫁接苗,1985年遇冬害,经恢复并加强管理,1987年开始挂果,由于甜春桔柚当时表现出较好的抗寒性和抗病性,对这30个单株及所结果实分别进行了鉴定、评价和比较,发现其中一株在果实和叶形上有变异性状,表现为果形整齐度好,油胞相对更细,果实固形物明显提高,果实平均种子数量0,97粒(其它甜春桔柚果都有3～7粒种子);叶形特征为新梢基部1～3张叶片在叶尖边缘凹陷形成畸形叶,而甜春桔柚无畸形叶,由此初步认为是芽变单株. 相似文献
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甜春桔柚Sweet spring又名甜泉桔柚,原产日本,由上田温州蜜柑(母本)与八朔柑(父本)杂交而成。2001年10月龙泉市林场从相邻的庆元县引进甜春桔柚接穗,高接在13年生的中晚熟温州蜜柑上;2004年3月龙泉市阳光农业有限公司又引进小苗种植。经过5年多的试验观察,该品种表现优质,丰产, 相似文献
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建阳桔柚是我市20世纪80年代初从日本引进的杂柑类品种甜春桔柚中芽变育成的新品种。2003年12月通过了福建省非主要农作物品种审定委员会对“建阳桔柚”新品种的认定。该品种表现树势强，幼树生长快，投产早，适应性强，高产稳产等优点；果实酸度低，含糖量高，清甜爽口，品质极佳，倍受果农朋友和消费者的青睐，已被我省列为柑桔品种结构调整的首推品种。笔者在建阳市坤坊生态果园示范场经过多年来的实践，探索出一套建阳桔柚优质高产栽培技术，现作一介绍。 相似文献
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院本文根据绿色食品的生产标准,总结了绿色莲藕的生产技术要点,提出了对产地的环境空气质量、农田灌溉水质、土壤环境质量的要求,以期为莲藕的绿色生产提供理论依据。 相似文献
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对福建省建宁县建莲产地环境质量的监测分析,结果表明,其气候条件、土壤环境、水质环境、大气环境质量符合NY,1r391—2000（（绿色食品产地环境技术备件》的要求,为建莲种植的适宜区域,适宜开发A级绿色食品。 相似文献
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为了研究不同水肥条件对辣椒产量和品质的影响，优化温室辣椒生产的水肥模式，对2种灌溉模式与3种不同追肥施用量共6个水肥组合条件下的辣椒产量和品质等7个指标进行主成分因子分析，同时对不同水肥组合进行灰色关联度综合评价。结果表明：不同水肥组合处理的辣椒产量和品质指标间均表现为显著差异。主成分因子分析结果显示，前2个主成分的特征值大于1，其方差累积贡献率达到86.53%，第一主成分代表了品质相关因子，第二主成分代表了产量相关因子。灰色关联度分析结果表明，滴灌—高肥组合和滴灌—中肥组合的灰色综合评判值分别为0.872 0和0.800 8，评为第1等级；漫灌—高肥组合的灰色综合评判值为0.779 6，评为第2等级；滴灌—低肥组合和漫灌—中肥组合为第3等级；漫灌—低肥组合的灰色综合评判值最低，评为第4等级。滴灌与肥料调控相结合的水肥耦合技术对辣椒的产量和品质具有一定的促进作用。 相似文献
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The effect of irrigation regimes and growth media on the production and quality of ‘Baccara’ roses was examined in a greenhouse during the 1969/70 and 1970/71 seasons. The media tested were (a) sandy loam, (b) sandy loam mixed with peat moss, (c) vulcanic scoria (tuff), (d) sandy loam placed on top of the local soil; all except (d) were in raised benches. Two levels of fertilizers were examined in the tuff media. The irrigation treatments in the soil media were established according to pre-irrigation water suction in the range 5 to 50 centibars (cb). In the tuff media the irrigation treatments were scheduled at different frequencies ranging from eight irrigations per day to one irrigation every 2–3 days.Maximum flower production was obtained in sandy loam which was placed on top of the local soil and irrigated so that the soil water suction did not rise above 5 cb. Flower length was unaffected by the irrigation regime in this growth medium.Flower production in the raised benches dropped when the water suction was kept below 20 cb or when it was allowed to rise to 50 cb. On the other hand, the highest percentage of long-stem flowers was obtained when the water suction was maintained below 5 cb.No significant difference in flower production was found between 5–8 and 2 irrigations per day in the tuff media. Maximum yield from these treatments was significantly lower than that in the non-raised soil benches. An increase in fertilizer level had no effect on flower production or quality.The flowering buds were relatively small at the beginning of winter and became larger toward spring. Only minor effects of growth media and moisture regimes on bud weight were found. 相似文献
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为了明确京郊日光温室越冬茬黄瓜高产栽培所需的适宜滴灌量,以黄瓜"津优35"为试材,研究了不同滴灌量对黄瓜灌溉水分配、产量、品质、水分利用效率和经济效益的影响。结果表明:85%农户常规灌溉量处理较对照节水50.8 mm,深层渗漏量减少42.6%,黄瓜产量提高3.6 t/hm~2,可溶性糖含量提高17.3%,硝酸盐含量降低5.0 mg/kg,果实品质提高;水分利用效率提高3.61 kg/m~3,增收1.42万元/hm~2。综合来看,85%农户常规灌溉量处理是京郊日光温室越冬茬黄瓜适宜滴灌量,全生育期灌溉总量为327.9 mm,其中苗期41.7 mm,初瓜期43.1 mm,结果期243.1 mm,当埋深20 cm的土壤张力计读数为-21.6 kPa时需进行灌溉。 相似文献
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亏缺灌溉对番茄果实品质和产量的影响 总被引：5，自引：2，他引：5
通过控制每次灌水量的方法,将土壤的水分控制在不同的水平上,研究了亏缺灌溉对番茄产量形成和果实品质的影响。随着土壤水分的降低,单果质量和产量逐步减少,但结果数变化不大;亏缺灌溉提高了果实可溶性固形物、有机酸、VC含量,但糖酸比变化不大;生产中可根据需要确定兼顾产量与品质的水分管理的平衡点, 亏缺灌溉提高了果实干物质含量,水分利用率显著提高。 相似文献
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Shigeoki Moritani Tahei Yamamoto Henintsoa Andry Mitsuhiro Inoue Koh Kato Hirotaka Saito 《Urban Forestry & Urban Greening》2013,12(3):338-343
In dryland areas, secondarily treated municipal wastewater could be used in extensive green roof systems. In this study, the effects of water and salt stress on a crassulacean acid metabolism (CAM) plant, Sedum kamtschaticum Fischer, was evaluated under intermittent saline irrigation. The salinity of irrigation water varied from 6.0 to 18.0 dS m?1. A reduction in soil water content and an increase in soil water electrical conductivity (EC) were observed during the irrigation interval (5–17 d) as a result of evapotranspiration (ET). The effect of soil water potential (SWP) on reduction of the ET ratio (ETr) was successfully described with an equation that could be applicable to a wide range of soil salinities and water contents, to estimate ET. In this study, the stress factor was defined as the integration of solute potential, and matric potential less soil water content for optimum growth (less than ?0.1 MPa) with elapsed time. The stress factor rapidly reduced total ET in CAM plants but effectively increased water-use efficiency (WUE). Thus, by using CAM plants for green roofs under intermittent saline irrigation, the need for irrigation water is reduced without a considerable loss of plant biomass. 相似文献