共查询到19条相似文献,搜索用时 234 毫秒
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《山东林业科技》2004,(2):29-29
日本红高系欧亚杂交种,原产于日本,为意大利的芽变,2 0 0 2年引入我国。该品种具有上色容易、耐贮、丰产抗病的特点,是玫瑰香型的早熟葡萄品种。日本红高葡萄,果穗大,呈圆锥形,平均穗重6 5 0g ,最大穗重10 30g。果粒着生紧密,果个大小整齐。果粒短椭圆形,果粒大,平均粒重10g ,最大粒重15g。果实呈浓紫红色,着色一致,成熟一致。果皮厚、易剥离、果肉硬脆,切片无滴汁,在2m高处掉到地上不破裂,果粒牢固、有脱粒、特耐贮运。该品种无肉囊;果汁黄绿色、味甘甜,且有浓郁的玫瑰香味。可溶性固形物含量2 0 %~2 1%。上色容易,在南方夜温高的地方也非… 相似文献
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家秋天又名秋皇家无核。该品种目前是最大的无核葡萄品种 ,由美国加州农业大学育成 ,1996年发表 ,曾用选择代号A97- 6 8。该品种果穗圆锥形、松散 ,自然穗重 5 0 0~ 10 0 0g ,座果良好。果实椭圆形 ,紫黑色 ,是目前无核葡萄品种中果粒最大的 ,不用人工处理平均粒重可达 10g左右 ,经GA等处理 ,果粒可增大到 15g左右。果肉硬脆、透明 ,可用刀切成片 ,品质极佳。果皮薄至中等厚。耐贮、耐运 ,成熟期 9月底至 10月初 ,是一个晚熟无核的好品种无核葡萄——皇家秋天@柴艺秀… 相似文献
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经调查,荔枝不同时期抽生的末次梢次年开花座果率不同;不同年份同一时期抽生的末次梢其次年开花盛果率也不同;荔枝早秋梢经冬梢处理后,成花率比晚秋梢高,但晚梢晚穗座果率较高,应视末次梢抽生情况及气候条件来决定培养早秋梢还是晚秋梢。花期气候反常时更要加强促花、控梢控穗,适时喷施增加光合作用的药剂,以保证荔枝丰产、稳产。 相似文献
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为了改进栽培措施、使早实核桃连年丰产稳产,研究了不同早实核桃品种的不同类型结果母枝的结实能力以及1 a生枝的拉枝效果,结果表明,在所研究的早实核桃品种中,辽宁1号结果母枝连续结实能力最强,其4 a生枝段上连续3 a结果母枝比例及混合花芽比例分别为51.67%和55.83%;然后依次是辽宁3号、中林1号、绿岭和鲁果1号,分别为60.94%和36.30%、52.78%和36.99%、20.12%和42.83%、15.43%和15.30%。1 a生枝拉枝后的萌芽率平均为56%,未拉枝的仅36%,拉枝后平均新梢结果数提高了10%。 相似文献
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种间杂交培育的5个核桃早实新品系 总被引:3,自引:0,他引:3
通过在国内外首次选用我国南方著名的晚实良种“漾鼻泡核桃”“三台核桃”(Juglans sigillata L.)与新疆早实核桃优株“云林A7号”(Juglans regia Dode)进行种间杂交,培育出我国南方核桃产区首批5个早实杂交核桃新品系,即云新7914,云新7926,云新8034,云新8064,云新85227。5个新品系综合了双亲优势性状,具有早实,早熟,丰产,优质,树体矮化,适应性广等优良性状,增产潜力巨大,推广前景广阔。 相似文献
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A three-dimensional model of radiative transfer and leaf gas exchange was used to quantify daily carbon (C) assimilation of all fruit-bearing shoots (FBS) in an early maturing 6-year-old peach tree (Prunus persica L. Batsch) with a heavy crop load. For a sample of FBS (n=36), growth of fruit and leafy shoots was measured every 1-2 weeks from 24 days after bloom (DAB) until harvest, between 93-101 DAB. The objective was to relate shoot C assimilation with harvested fruit mass for each shoot to test the hypothesis that variation in C supply contributes significantly to variation in fruit growth within and among FBS. Mean C assimilation of the sampled shoots was 0.07 g C fruit(-1) day(-1), but varied between 0.014 and 0.32 g C fruit(-1) day(-1). This indicates that C availability for fruit growth would have varied significantly among individual FBS if they were autonomous. Mean fruit dry mass on each FBS varied between 0.716 and 7.68 g C at harvest, and most of the variation originated among, not within, individual FBS. However, there were no correlations between the mean and standard deviation of fruit mass and fruit relative growth rate when each was plotted against shoot C assimilation, indicating that factors such as those regulating C demand of fruit, or C transfer among individual FBS, may be more important in controlling variability in fruit growth than intra-crown variability in shoot C assimilation. Under the study conditions, FBS were non-autonomous for C, because a model of fruit and leafy shoot growth was unable to reproduce the observed growth without supplementary contribution of C from shoots without fruit. 相似文献
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采用1~4年生的毛竹母竹进行造林对比试验,结果表明:不同年龄母竹对毛竹的造林成活率和出笋率、成竹率均有极显著影响,以2年生母竹的造林成活率和出笋率、成竹率最高,分别达93.3%、76.9%、83.7%;3年生母竹次之;1年生、4年生母竹的造林成活率和出笋率、成竹率均较低. 相似文献
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