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喷赤霉素提高玉田孤树小枣坐果率试验结果表明:喷1次赤霉素,以6月6日喷33.3 mg·kg-1赤霉素的坐果效果最好,坐果率比对照高13.7%。喷2次赤霉素,以6月6日和6月11日分别喷33.3 mg·kg-1的坐果效果最好,坐果率比对照高20.5%。喷3次赤霉素,以6月6日、6月11日分别喷33.3 mg·kg-1赤霉素、6月26日喷16.6 mg·kg-1赤霉素的坐果效果最好。 相似文献
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以5~7 a生葡萄山椒为试材,研究了葡萄山椒落花落果的规律;并针对上述原因,开展了不同雌雄株配置比例20:1、10:1、4:1处理、喷布不同植物生长调节剂等方法对提高葡萄山椒坐果率的影响试验.结果表明,葡萄山椒落花落果的主要原因是授粉受精不良、生理失调、营养不足及环境不良等.不同雌雄株配置比例表明:雌雄株比例为4:1时葡萄山椒坐果率最高;喷布赤霉素、枣丰灵和硼砂等可明显提高葡萄山椒的坐果率,喷布清水对提高葡萄山椒坐果率也有一定效果,2,4-D溶液对提高葡萄山椒坐果率效果不明显,其中以花期喷施50 mg/L赤霉素效果最好. 相似文献
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<正>试验在凌源市宋杖子镇6年生大枣园进行,试验处理设:①喷赤霉素液50mg/L;②喷清水;③以不喷处理为对照。每处理10株树,于6月2日大枣盛花期喷施。调查结果表明,以上处理坐果率分别为66.1%、39.2%、35.6%,总产量分别为72.6kg、33.7kg、31.4kg,表明大枣盛花期喷赤霉素50 mg/L赤霉素液,可显著提高坐果率,增产效果明显。这一方法是解决干旱少 相似文献
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花粉直感对京白梨品质的影响 总被引:23,自引:3,他引:23
为研究京白梨生产中花粉直感与所出现的品质退化现象的关系,试验选用11个梨品种为授粉品种,以生长势健壮、结果盛期的京白梨为母本进行人工授粉,测定了不同授粉组合的坐果率、成熟种子数、果实外在品质及内在品质等几个主要指标。结果表明:京白梨果实在坐果率、成熟种子数、单果重、可滴定酸、可溶性固形物等方面表现明显的花粉直感现象,而在果形指数、可食用部分表现不明显。成熟种子数与可滴定酸显著相关,表明花粉可通过种子对果实品质产生一定影响。京白梨最适宜的授粉品种是白梨系统的鸭梨、金水2号、中梨2号和七月酥。 相似文献
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两个胚败育率不同的枣品种果实生育期内源激素的变化 总被引:14,自引:1,他引:14
以胚轻度败育的冬枣和胚高度败育的梨枣为试材, 用高效液相色谱法对其果肉和种子的内源激素进行了测定。结果表明, 梨枣果肉在坐果后20 d 以内的玉米素(Z) 含量及坐果后30 d 以内的GA3 、IAA 含量皆高于冬枣果肉, ABA 出现较冬枣早40 d , 冬枣种子Z 含量在坐果后20 d 达到最高值, 远高于冬枣果肉; GA3 一直保持很低水平。冬枣种子IAA 在坐果后40 d 达到最高峰, 以后一直保持较高水平, 远高于冬枣果肉; IAA/ GA3 、IAA/ Z值直至坐果后55 d、40 d 保持低水平, 但之后急剧提高。梨枣坐果后10 d ,无仁果肉的3 种生长类激素含量皆高于有仁果。幼果果肉中高水平的生长类激素不利于胚的正常发育, 而幼胚中高水平的Z和IAA 有利于胚的正常发育。 相似文献
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用3个性状差异较大的二倍体授粉品种对12个三倍体西瓜品种或组合进行授粉,统计分析结果表明,对三倍体西瓜的坐果指数、产量、中心可溶性固形物、着色瘪子等影响均无显著差异。 相似文献
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J. B. Free Yvette Spencer-Booth 《The Journal of Horticultural Science and Biotechnology》2013,88(1):54-60
In a dwarf-pyramid apple orchard, rows of Cox’s Orange Pippin adjacent to rows of Janies Grieve had greater initial and final fruit sets than rows between other Cox rows. Flowers on the south sides of trees tended to have a greater set of fruit than those on the north sides.In a sweet-cherry orchard containing a block of five rows of Early Rivers with pollinizer rows on each side, most fruit was set on the two outside rows and least in the centre row. Trees in the outside rows set more fruit on their sides facing the pollinizers than on their far sides. In another sweet-cherry orchard, Frogmore trees set more fruit on their south sides than on the other parts.In a dwarf pyramid orchard of Comice, the trees with one graft of Conference (every tenth tree) set more fruit than trees without a graft. However, the fruit set on Conference dwarf and standard trees (two orchards of each) did not differ with their distance from pollinizers. 相似文献
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J. B. Free 《The Journal of Horticultural Science and Biotechnology》2013,88(4):262-271
The fruit set on plum trees decreased greatly with increase in distance from pollinizer trees, and less so with increase in distance from honey-bee colonies. Trees adjacent to pollinizers had a greater set on the sides facing the pollinizers than on their far sides. Parts of trees touching “ bouquets ” had a greater set than parts without bouquets.In an apple orchard with main variety and pollinizer trees in separate blocks, the fruit set was greater on the main variety trees adjacent to the pollinizers than on trees farther away. In an apple orchard with a pollinizer tree as every third tree in every third row, main variety trees had a greater fruit set, more seeds per fruit, and more carpels with seeds per fruit, on the sides near to their adjacent pollinizers than on their far sides. The fruit set, number of seeds per fruit, and number of carpels with seed per fruit, were greater the nearer the trees were to the adjacent pollinizer.These results are discussed in relation to the foraging behaviour of honey-bees and to methods of arranging pollinizer and main variety trees in orchards. 相似文献
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在保护地种植中果型西瓜京欣,采用双行坐果种植方式、单行坐果种植方式与传统随机坐果种植方式进行比较,结果表明:在保护地种植中果型西瓜667m2产量及中心、边部可溶性固形物含量、商品瓜率与坐果方式及管理方法有关,双行坐果种植方式西瓜坐瓜率达到99%,单瓜质量达到5.7kg,中心和边部可溶性固形物含量达到11.03%和7.43%,分别比传统随机坐果种植方式提高0.73和0.36百分点,且口感好,667m2产量达到3893.67kg,经济效益比传统随机坐果种植方式提高33.01%。单行坐果种植方式由于密度较大,坐果后受根系吸收养分及水分的不利影响较大,坐果率为98.07%,单瓜质量为4.84kg,中心和边部可溶性固形物含量为10.87%和7.10%,667m2产量为3296.19kg,经济效益比传统随机坐果种植方式提高10.34%。传统随机坐果种植方式各项指标最低:坐果率为97.3%,单瓜质量为4.63kg,中心和边部可性固形物含量为10.3%和7.07%,667m2产量为3085.29kg,经济效益为6851.75元。建议瓜农改变传统的随机坐果种植方式为双行坐果方式种植。 相似文献