共查询到20条相似文献，搜索用时 218 毫秒
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为解决绿色食品花椰菜在生产中缺乏技术指导,生产水平较低的问题,在总结绿色生产实践的基础上编写了绿色食品(A级)花椰菜生产技术规程,并从产地环境、育苗前准备、育苗、定植前准备、定植、田间管理、病虫害防治及采收等方面进行了详细技术说明,以期能够满足绿色花椰菜生产的技术需求,有助于提高绿色食品生产水平。 相似文献
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花椰菜是一种栽培条件要求较高、技术性较强的蔬菜品种，但上市集中，价格较低。为此，弶港镇农技推广中心用同一品种、在同一地块、同一时间播种、同一时间定植、同一管理施肥水平进行不同育苗方式试验，结果错开收获，不形成销售高峰，使花椰菜价格一路走高，提高了经济效益。现将3种不同育苗方式对花椰菜的生育差异介绍如下： 相似文献
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黑果枸杞高效种子育苗技术 总被引：3，自引：0，他引：3
以黑果枸杞种子为试材,研究了基质对其种子发芽及不同移栽方式对幼苗生长的影响.结果表明:应用育苗基质的种子发芽率、发芽势、移栽成活率等要好于土壤.出苗90～120 d后幼苗可进行大田定植,如不在此时定植的可在2个月进行分苗移栽,有利于幼苗生长,移栽到育苗基质中幼苗的生长情况要好于土壤中. 相似文献
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湖北地区十字花科蔬菜种植以秋冬季露地栽培为主,夏季进行播种育苗,本研究以甘蓝、大白菜和花椰菜3种主要十字花科蔬菜为研究对象,开展夏季漂浮育苗与穴盘育苗2种育苗方式的比较试验。试验结果表明,漂浮育苗可以有效提高单位面积土地的育苗数量,每667 m^(2)漂浮育苗可比穴盘育苗多育140000株,提高育苗效率33.3%;漂浮育苗可提高甘蓝和花椰菜种子萌发率,且漂浮育苗的种苗生长状况及露地栽培定植后植株生长状况显著优于穴盘育苗,甘蓝、大白菜和花椰菜单株商品质量分别提高29.2%、46.1%和41.1%。综上,漂浮育苗技术更加适于夏季十字花科作物育苗,可提高育苗效率和种苗质量,是一种优质高效的育苗方式。 相似文献
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花椰菜营养丰富,市场需求量较大,经济效益较好。本文从品种选择、播种育苗、整地定植、田间管理、病虫害防治和采收等方面总结了夏秋无公害花椰菜栽培技术。 相似文献
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番茄穴盘育苗苗龄和营养面积的研究 总被引：13，自引：1，他引：13
不同的营养面积对番茄秧苗质量的影响随着苗龄的增加而作用明显 ,全面衡量苗龄对产量形成的影响及穴盘育苗所能给予的营养面积 ,番茄穴盘育苗应提倡中龄苗定植。苗龄大小与育苗营养面积大小都会对产量形成产生明显的影响 ,前者产量时期的分布趋向于前高—后低或前低—后高 ,在总产量上得到一定程度的平衡 ;而后者随着营养面积的减小 ,产量水平逐渐下降。 相似文献
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为了探究炼苗期基质含水量对黄瓜商品苗贮藏质量的影响,在炼苗期对黄瓜育苗基质进行不同含水量处理,测定了不同贮藏时间下黄瓜幼苗质量相关指标及定植后恢复生长指标,筛选了评价黄瓜幼苗贮藏质量的单一和复合指标。结果表明：随着贮藏时间的增加,所有基质含水量处理下黄瓜幼苗的叶片健全指数、淀粉含量及定植后心叶生长速度均下降。综合来看,贮藏0 d（直接移栽）,基质相对含水量45%～55% 处理下幼苗定植后生长恢复情况最好;贮藏2 d,炼苗期基质相对含水量30%～40% 和45%～55% 处理下黄瓜幼苗各项指标和定植后生长恢复能力均表现良好;贮藏4 d,幼苗质量明显劣变,但各处理间无显著差异;贮藏6 d,仅基质含水量75%～85% 处理下黄瓜幼苗定植后能够恢复生长。通过相关性分析得出,贮藏期黄瓜幼苗叶片健全指数与定植后恢复生长能力的相关系数最高,可作为评价幼苗贮藏质量的单一指标;通过通径分析得出,复合指标“可溶性糖含量（mg·g-1,FW）+86.24 比叶重（g·dm-2）-474.56 地下部干质量（g）”能够很好地反映定植后幼苗恢复生长能力。 相似文献
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为探究生物刺激素产品在春季花椰菜绿色防控生产中的应用效果,2019年在北京市大兴区开展4种生物刺激素对花椰菜生产的影响试验,比较植株长势、结球率、单球直径、单球质量、品质等指标,以筛选适合推广使用的生物刺激素。结果表明:苗期施用大丽轮枝孢激活蛋白(处理2)可以促进花椰菜苗期生长,推荐用量为苗期施用大丽轮枝孢激活蛋白5000倍液,定植后30 d施用12000倍液;定植后施用大丽轮枝孢激活蛋白(处理6)可以提高花椰菜的产量,推荐定植后7 d和结球前各施用1次大丽轮枝孢激活蛋白6000倍液;采用以上处理方法可以增加花椰菜的维生素C含量,提高品质和安全性。 相似文献
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With the aim of helping to select superior planting material for drought characteristics, baobab seedlings from two countries, one in western and one in south-eastern Africa, were grown in a greenhouse and their growth and morphology were studied. Seedlings were grown for 18 weeks and several morphological characteristics (length, diameter and dry weights of different plant parts, number of leaves, stomatal density, among others) were recorded at different harvesting times. Biomass allocation changed with time: seedlings invested more in fine roots and leaves in the beginning of their growth while later they invested more in the development of the taproot. In general, at any harvest time, seedlings from Malawi were larger; but seedlings from Mali had higher relative growth rates and a faster ontogeny. Seedlings from Mali had shorter hypocotyls, their stems were thicker, they had fewer leaves, lower leaf area ratios and, in general, they had a higher stomatal density than those from Malawi. Significant differences between provenances within one country could also be observed. In general, seedlings from drier provenances were smaller overall, they had fewer leaves, higher taproot water content and stomatal density, characteristics often related to drought adaptation. Seedlings from drier provenances also invested more in their taproot, a key organ for baobab seedling survival. Although our seedlings were only grown under optimal conditions in a greenhouse, results from this study indicate that there is a great variation in baobab seedling growth, biomass allocation to plant parts and morphology, which gives opportunities to select high quality planting material. 相似文献
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Slow-release fertilizer rates (0, 1.1 and 4.5 kg/m3 of 14 N-6 P-11.6 K Osmocote) and isolates of the ectomycorrhizal fungus Pisolithus tinctorius (Pers.) Coker and Couch affected growth and mycorrhizal development on pin oak (Quercus palustris Meunchh.) seedlings. Mycorrhizae developed on all inoculated seedlings after 8 weeks regardless of fertility regime. Through the first 14 weeks, the best mycorrhizal development occurred on all inoculated seedlings fertilized at the lower fertilizer rate. The higher fertilizer rate delayed mycorrhizal development. However, after 18 weeks there were no significant differences in mycorrhizae on inoculated seedlings receiving fertilizer. Inoculated, non-fertilized seedlings had significantly less mycorrhizae than fertilized seedlings throughout the experiment. Only one isolate increased seedling growth, and only at the higher fertilizer rate. No differences in plant height were found among non-inoculated control and inoculated seedlings at the low fertilizer rate. 相似文献