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3种不同柑桔中间砧在树体矿质营养含量上的双重效应 总被引：2，自引：0，他引：2
以纽荷尔脐橙/3种不同中间砧/枳为试材进行田间试验研究不同中间砧对接穗叶片矿质营养含量的影响。结果表明，3种中间砧对接穗叶片N、P、Ca、Fe和Zn含量年变化趋势的基本特征无明显影响；而对叶片K、Mg和Mn含量的年变化趋势特征在一定变化阶段上有明显影响。在年周期的不同时期里，叶片K和Mn含量在3种不同中间砧之间存在显著或极显著差异；而其余矿质营养含量在3种不同中间砧之间只在部分时期里存在显著或极显著差异；而在各矿质营养含量存在显著或极显著差异的不同时期间，该矿质营养含量在3种不同中间砧之间的相对高低差异趋势不全相同。 相似文献
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Pleurotus ostreatus strains obtained by interbreeding were cultivated under warm conditions (27 °C), with the aim to identify germoplasm adequate to commercial production. Based on the radial growth rate of monokaryotic mycelia isolated from two P. ostreatus strains, a culture isolate was selected from each type of compatibility, and interbred to obtain 16 strains. Pasteurized barley straw was used as the substrate for mushroom production. The mean biological efficiency of the strains was 84.17% and the production rate was 1.76%. In vitro laccase activity was tested for both parental strains and the four most productive strains of progeny. The mean enzyme activity of the strains was 1.21 μg mol/disc/ABTS oxidized. These results show the high potential of these strains for their use in substrate delignification and the production of basidiocarps under natural environmental conditions of warm regions. 相似文献
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以纽荷尔脐橙/3种不同中间砧/枳为试材进行田间试验研究不同中间砧对接穗叶片矿质营养含量的影响。结果表明,3种中间砧对接穗叶 片N、P、Ca、Fe和Zn含量年变化趋势的基本特征无明显影响;而对叶片K、Mg和Mn含量的年变化趋势特征在一定变化阶段上有明显影响。在年周期的不同时期里,叶片K和Mn含量在3种不同中间砧之间存在显著或极显著差异;而其余矿质营养含量在3种不同中间砧之间只在部分时期里存在显著或极显著差异;而在各矿质营养含量存在显著或极显著差异的不同时期间,该矿质营养含量在3种不同中间砧之间的相对高低差异趋势不全相同。 相似文献
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拉枝角度对‘SH1’矮化中间砧‘富士’苹果幼树生长和结果的影响 总被引：1，自引：0，他引：1
旨在为‘SH1’矮砧‘富士’提供幼树树形管理的科学依据。本研究以4年生‘SH1’矮砧‘富士’为试材,通过70°、90°、120°3种拉枝角度的处理,探讨不同拉枝角度对苹果幼树生长和结果的影响。结果表明:拉枝角度120°时叶片光合速率最大,且与其他2个处理差异显著(P0.05);拉枝角度90°时叶绿素a、叶绿素b和总叶绿素含量最高、叶片厚度、百叶重最大,与其他2个处理差异显著(P0.05);拉枝角度90°时的冠下光合间接辐射最大,拉枝角度120°时株间光合间接辐射、光合直接辐射和叶面积指数均最大;拉枝角度90°时长枝的长度、粗度最大,中枝粗度最大,拉枝角度120°时中枝长度最长;拉枝角度90°时果实单果重、果形指数、可溶性固形物含量、硬度均最大。综合考虑树体生长势和果实品质等因素,90°为‘SH1’矮砧‘富士’枝条适宜的拉枝角度。 相似文献
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以"京欣2号"西瓜为接穗,"伊丽莎白"甜瓜为中间砧,"德高铁柱"南瓜为砧木,研究甜瓜中间砧嫁接、常规嫁接与自根西瓜的植株生长和西瓜果实品质之间的差异。结果表明,甜瓜中间砧嫁接西瓜生长势比自根西瓜生长势强,叶绿素质量分数和根系活力均比自根西瓜高;果实中的可溶性固形物、可溶性糖、维生素C质量分数显著高于常规嫁接,可滴定酸质量分数低于常规嫁接;保留2片甜瓜真叶的中间砧对西瓜品质的影响效果更为显著,并提高果实的可溶性蛋白质量分数。综合分析表明,甜瓜中间砧嫁接既保持常规嫁接的强生长势,又显著提高西瓜的品质。 相似文献
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为探究‘Y-1’矮砧‘富士’最佳栽植密度模式,以4年生‘Y-1’矮砧嫁接‘富士’为试材,通过3种栽植密度(0.8 m×4 m、1 m×4 m、1.2 m×4 m)处理,探讨其对树体生长和结果的影响。结果表明:栽植密度0.8 m×4 m与1.2 m×4 m的树体高度、干径存在显著差异(P0.05),3种栽植密度下树体冠径、新梢生长量、枝类构成差异不明显;栽植密度1 m×4 m的日平均光合速率高于其余2种栽植密度;冠下和株间的光合间接辐射、光合直接辐射随栽植密度的减少而增大,叶面积指数随栽植密度的减少而减小,栽植密度1.2 m×4 m的光合间接辐射、光合直接辐射最大,叶面积指数最小;栽植密度1 m×4 m的单果重、果形指数、可溶性固形物含量、可溶性总糖含量、硬度、糖酸比显著高于其他2种栽植密度,果实品质最佳。综合考虑树体生长势、光能利用率、果实品质等因素,1 m×4 m为‘Y-1’矮砧‘富士’的适宜栽植密度。 相似文献
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With the purpose of obtaining apple plants with reduced vigour but deep and expanded root apparatus, more adapted for establishment of apple orchards in dry, windy areas and higher altitudes, different interstem/rootstock combinations were compared, using seedling as rootstock and, alternatively, two weak interstocks (M.9 and M.27). For all treatments the plants were grafted at two height from soil (10 and 20 cm), interposing interstock 10 or 20 cm long. Plants with interstock showed lower vegetative growth in comparison with control plants with a reduction of 80% (M.27) and of 50% (M.9) of canopy growth. Moreover, use of interstock determined, as compared with the control plants, an increase of fruit production and average fruit weight. It was noted that increasing the interstock length, caused reduction of plants vigour and fruit production. The results showed that, the combination “Annurca Rossa del Sud”/M.9 (10 cm long)/seedling rootstock (20 cm high) was the most efficient for productivity, early maturing and plant vigour control. 相似文献