清河城红松种子园高产结实无性系选择的研究     

曹世刚 《防护林科技》2015,(5)

通过对清河城红松无性系种子园优树收集区内550个无性系2 196株母树连续4年进行结实情况及生长性状观测调查,结果表明:清河城红松林木种子园各无性系间结实量差异极显著;采取显现概率法选育出179、332、380、589、578、328等43个高产结实无性系,平均结实量增产114%。  相似文献   

果园气象因子远程监测系统的设计与开发     

周荣  卢博友 《安徽农业科学》2010,38(4):2059-2060,2063

应用LabVIEW虚拟仪器开发平台,结合数据采集卡和各种传感器,实现了果园气象因子参数的实时采集、显示和存储,并利用LabVIEW自带的远程面板技术让客户远程监控服务器端。结果表明：统能较好地实现果园生态环境远程实时监测,为果树生产管理提供及时准确的园区信息。  相似文献   

3WZ-700型果园喷雾机通过性能分析   总被引：2，自引：0，他引：2  

邱威  丁为民  申宝营  史庆春  万南城  顾家冰 《农业机械学报》2012,43(6):63-67,146

针对现代果园低矮密植的园艺特征和果园喷雾机重心动态变化特点,通过试验和建立数学模型对大容量药箱的果园喷雾机的通过性能进行分析,得出药量与越障高度的关系曲线。在0～200 L药量区间内前轮越障由200 mm下降到84 mm;在200～400 L药量区间内前轮越障高度随药量变化缓慢,由84 mm下降到53 mm;后轮越障高度与喷雾机参数无关。实地测试表明,试验均值与理论值基本一致,喷雾机通过性能较好。  相似文献   

果园生草栽培的生态环境效应研究进展   总被引：2，自引：1，他引：1  

杜丽清  吴浩  郑良永 《中国农学通报》2015,31(11):217-221

果园生草是保持果园土壤肥力和改善土壤环境的有效技术,在欧美等国应用广泛。20世纪80年代初,中国引进生草技术,并首先在福建、广东等地果园中推广。但由于中国气候差异较大,缺乏规范化,果园生草技术一直没有得到广泛的推广应用。为此,笔者从生草栽培的果园环境效应、生草栽培的果树生理效应等方面综述了国内外果园生草栽培效应的研究进展,以期为果园的可持续发展、推广果园生草栽培技术提供参考。  相似文献   

基于早期产量的马尾松第1代种子园高产无性系选择     

林建东 《福建林业科技》2012,(1):9-12

通过对福建省尤溪国有林场马尾松第1代种子园早期产量的研究,进行高产无性系选择。结果表明:即使在种子园初产期,大小年现象明显。以各年度无性系种子均重、出籽率大于建园无性系平均值为标准选择各年度高产无性系,无性系种子均重平均可提高59.94%,出籽率平均可提高41.53%,增产效果选择明显;但各年度入选无性系差别较大,存在产量不稳定型无性系。选择3 a均入选的9个无性系为高产稳产建园无性系,入选率为18.00%,其无性系种子均重可提高75.92%,出籽率可提高54.39%。  相似文献   

‘红香酥’梨果皮色素变化规律及套袋对其形成的影响     

王龙  李鸿雁  杨健  王苏珂  李秀根 《果树学报》2012,(3):333-337,523

为探讨提高‘红香酥’着色的套袋技术措施,以‘红香酥’梨为试材,研究了果实发育过程中果皮花青苷含量的变化及果园温度、套袋时期对果皮花青苷积累的影响。结果表明,‘红香酥’梨果皮花青苷合成与积累高峰出现在果实发育后期,期间含量有所下降,接近果实成熟时花青苷含量急剧增加,成熟时达到最高峰;叶绿素含量从盛花后100 d开始逐渐降低,至果实成熟时达到最低值;类胡萝卜素含量在盛花后90 d以后一直保持较低的水平;昼夜温差不影响花青苷的积累,但较低的昼夜气温有利于花青苷的积累;花后30 d套袋,果实成熟前60 d去袋可显著提高果皮花青苷含量,但对叶绿素含量影响不显著。单独利用套袋技术不能显著改善‘红香酥’梨果实着色。  相似文献   

垦殖方式对侵蚀果园果实产量与品质的影响     

詹杰  罗旭辉  董学金  王义祥  郑仲登  黄毅斌 《亚热带水土保持》2009,21(2):6-8

研究不同垦殖方式对坡地果园土壤和果树产量及果实品质的影响。结果表明：坡地果园平台开垦及植草都能有效地减少果园土壤的水土流失和增加果园的土壤肥力;从果树的产量和品质来看,平台清耕的果树果实产量及品质最好,平台植草和顺坡清耕次之,顺坡植草的果树产量和品质最低,说明果园平台开垦能够提高果树产量和品质,果园植草则对果树果实产量品质存在着一定的影响。  相似文献   

Improving productivity of Bauhinia purpurea for tree planting farmers in Nepal     

Prem Kant Jha  Lohendra P. Dhakal  Erik D. Kjær  Jens-Peter Barnekow Lillesø 《Agroforestry Systems》2006,67(3):273-278

Shortage of fodder is a major constraint to livestock production in Nepal. The genetic variation in canopy biomass production of Bauhinia purpurea L, a very important fodder species in Nepal, was estimated in a Breeding Seed Orchard in order to examine the potential of simple, low input breeding. Substantial genetic variation could be observed suggesting that low input breeding based on simple phenotypic selection can provide biomass gain in the order of 2–5% per year. Very high correlation was observed between stem diameter (cross section area) and total biomass, making farmer based selection relevant. Jointly, these results suggest that low input domestication is a promising option for improving fodder production in Nepal and thereby help to improve rural livelihood and development. A multiple population approach is recommended.  相似文献   

Lime,sewage sludge and mineral fertilization in a silvopastoral system developed in very acid soils     

M. L. López-Díaz  M. R. Mosquera-Losada  A. Rigueiro-Rodríguez 《Agroforestry Systems》2007,70(1):91-101

In recent years, in the European Union, sewage sludge production has been increased as a result of EU policy (European directive 91/271/EEC). Organic matter and nutrient sewage sludge contents, principally nitrogen, indicate it can be used as fertilizer. The objective of the experiment was to compare the effect of no fertilization, three doses of sewage sludge, with or without liming, and the fertilization usually used in the region applied over a period of 3 years on pasture production and tree growth in a silvopastoral system. The experiment was conducted in the northwest of Spain. The soil was very acid (soil pH = 4.5) and had very low nutrient levels, especially P, that is related to site index. It was sown with a grass mixture (25 kg ha⁻¹ of Lolium perenne L. 10 kg ha⁻¹ of Dactylis glomerata L. and 4 kg ha⁻¹ of Trifolium repens L.) in Autumn 1997 under a plantation of 5-year-old Pinus radiata D. Don at a density of 1,667 trees ha⁻¹. Liming and sewage sludge fertilization increased soil pH and reduced saturated aluminium percentage in the interchange complex (Al/IC) in the soil, coming up the effect before with liming. Medium and high sewage sludge doses increased pasture production in the two first years. In a silvopastoral system, positive tree growth response to different fertilization treatments depended on tree age, initial soil fertility, soil pH, the relationship of competition with pasture production and previous liming application.  相似文献   

山西省苹果主产区果园营养现状及施肥建议   总被引：3，自引：1，他引：2  

武怀庆  白成云 《山西农业科学》2005,33(4):63-65

通过对山西省苹果主产区果园土壤样品和植株样品的测试、分析、统计,了解了当前该区域内的果园土壤营养和植株营养现状,并参照国内外有关文献,进行了分析评价,同时提出果树不同生育期、不同产量水平的施肥建议。  相似文献