共查询到19条相似文献，搜索用时 203 毫秒
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通过种间杂交选育加工黄瓜新品种宁佳1号 总被引：2，自引：1，他引：2
以黄瓜属(Cucumis)野生种(C. hystrixChakr. )为母本,以栽培黄瓜(C. sativusL. )北京截头为父本,通过远缘杂交导入外源种质,结合多代回交、自交获得黄瓜新种质7012A。将7012A与美国威斯康辛大学选育的雌性系黄瓜(7011A)杂交获得F1,与亲本及美国推广加工黄瓜品种进行品种比较试验,结果表明:F1 具有超亲优势,结瓜整齐,营养价值高,加工品质良好。植株长势强,主侧蔓均有结瓜能力,主蔓结瓜为主,后期产量高。 相似文献
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1材料与方法 1.1材料 供试材料为A(航天黄瓜2-2-华2)、B(航天黄瓜2-1-华3)、C(津优2号),并以C作为对照,以上品种分别由中国农科院原子能利用研究所和天津市黄瓜科学研究所提供. 相似文献
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通过对8个薄皮甜瓜品种进行比较试验,筛选出适宜在宁夏中部干旱带早春露地栽培的优质品种。研究结果表明,特大超早糖王和丰宝2个品种综合性状突出,明显优于CK（八里香）和试验的其他品种,适合在宁夏中部干旱带作早春露地栽培。 相似文献
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Container-grown Ligustrum ovalifolium L. plants were used to determine the influence of nutrient availability on the mobilisation of carbon (C), nitrogen (N) and phosphorus (P) during spring growth. During the spring of the second growing season, plants either received no fertiliser, or were fertilised early (starting 17 days after bud break) or late (starting 3 months after bud break). Nutrient composition of different plant tissues was determined at several times during the second growing season from bud break to the end of elongation. Time of fertilisation did not influence aerial dry weight until flowering was completed. Plants that received no fertiliser or were fertilised late had greater root dry weight than plants that received fertiliser early. Fertilised plants had a second flush of growth after flowering completed. Nitrogen and phosphorus mobilisation occurred from bud break to the end of elongation (3 months). Nutrient mobilisation was effective in each perennial organ: root, trunk, ligneous stems and old leaves. However, the role of old leaves as storage organ was minor compared to evergreen tree leaves. Carbon mobilisation only occurred on the 1st month following bud break, before elongation. C-starch accumulation was observed in unfertilised plants even when the C-starch quantities in early fertilised plants were very low at the end of elongation, mainly in roots. In spite of fertilisation supplies, N and P quantities did not increase after elongation in the early fertilised plants, probably in relation to C insufficiency in roots to sustain N and P absorption and assimilation. By contrast, in late fertilised plants, high C quantities in roots were mobilised for N and P uptake and assimilation, which allowed both second growth flush and storage of N and P in perennial organs. The mobilisation of nutrients before and during elongation revealed the nutritional autonomy of shrubs, which could allow fertiliser use efficiency to be increased and environmental impacts to be minimised by delaying spring fertilisation. Nevertheless, the shrub ability to valorise fertilisation supplies for sustaining growth or nutrient storage restoration required sufficient C-starch quantities in roots. The starch accumulated in roots before late nutrient supply can be used for these objectives. 相似文献
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长豇豆早春保护地栽培模式的比较试验 总被引：2，自引：0，他引：2
以鄂豇豆 2号、特早 3 0、之豇 2 8 2豇豆品种作为试验材料 ,采用“大棚套小拱棚营养钵育苗 +移栽露地地膜覆盖 +套小拱棚栽培”、“大棚套小拱棚营养钵育苗 +移栽大棚栽培”和“露地直播 +地膜覆盖栽培”3种武汉地区长豇豆早春保护地栽培的常用栽培模式 ,组合成 9种不同的处理进行双因子试验。结果表明 :长豇豆早春保护地栽培的优良品种是鄂豇豆 2号 ,优良栽培模式是栽培模式 1(大棚套小拱棚营养钵育苗 +移栽露地地膜覆盖 +套小拱棚栽培 ) ,优良组合栽培模式是处理组合 1C(大棚套小拱棚营养钵育苗 +移栽露地地膜覆盖 +套小拱棚栽培和鄂豇豆 2号豇豆品种组合栽培模式 )和 2C(大棚套小拱棚营养钵育苗 +移栽大棚栽培和鄂豇豆 2号豇豆品种组合栽培模式 )。 相似文献
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为了改变四川各主产区金针菇栽培料配方纷繁杂乱,差异较大的现状,筛选出成都平原地区高产、高栽培效益的配方,将现在四川金针菇主产区（郫县、峨眉、大邑、崇州、简阳、金川）7个生产上常用配方进行比较分析。结果表明,冬末早春出菇,崇州和大邑配方的菌丝生长速度较快（0.281 cm·d^-1和0.260 cm·d^-1）,菌丝生长势强,污染率较低（3.33%和0）,外观品质好,鲜菇产量高（0.846 kg·袋^-1和0.86 kg·袋^-1）,生物学效率高（63.656%和64.741%）,而且经济效益好（1.518元袋和1.365元袋）。研究认为在成都平原冬末早春出菇时,可以因地制宜地使用崇州和大邑配方。 相似文献