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本文总结了建园改良、栽植、合理施肥、整形修剪、攻梢和控梢促花、保花保果以及病虫害防治等技术措施,从而为提高东魁杨梅的产量和质量提供参考。 相似文献
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酸雨胁迫下比久(B9)对东魁杨梅生理特性的影响 总被引:1,自引:1,他引:0
通过模拟田间试验,研究比久(B9)对酸雨胁迫下6年生东魁杨梅的生理生化特征影响.结果表明:比久能减少酸雨胁迫时丙二醛(MDA)的积累;提高超氧化物歧化酶(SOD)、过氧化物酶(POD)和过氧化氢酶(CAT)活性,减缓膜脂过氧化程度;缓解酸雨胁迫下东魁杨梅叶绿索和类胡萝卜素的降解速度,促进叶片净光合速率的增加,从而提高叶片中可溶性糖和蛋白质含量以及可溶性糖,蛋白质含量的值.但比久处理需要适当的浓度,浓度过高会产生负效应,比久调控的最佳浓度为2500mg/kg左右. 相似文献
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荔枝高产优质综合栽培技术探讨 总被引:1,自引:0,他引:1
荔枝近年来发展迅速,但普遍存在品种混杂和栽培技术落后等问题。要使荔枝高产优质,就必须注意选择适宜品种,改进种植和栽培技术,并采用整形修剪、植物面措施。 相似文献
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我省北部及东部地区大豆重迎茬面积很大,如何种好重迎茬大豆,把重迎茬危害降低到最低程度,是当前大豆生产上的关键性问题。针对这些问题,我省科研、院校及推广等部门进行了联合攻关,取得了较好效果。现将这些成果进行科学组装,提出以下综合栽培技术。1.远用优良品种,搞 相似文献
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通过四种不同方法高接换种对青梅嫁接成活率、桩口愈合表现、高接枝折裂情况以及嫁接第二、三、四年表现的产量等性状进行试验观察。试验结果表明:青梅成年树大枝高接采用双头对芽切接法,两芽向内交叉生长,再次靠接后连成一体,桩口愈合好,接口牢固,生长旺,树冠恢复快,产量高,具有较高的生产推广价值。 相似文献
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An investigation was made of the potential for attaining high daily live weight (LW) gain, high feeding efficiency and carcass quality in Norwegian Red (NRF) bulls fed grass silage harvested at early stages of maturity, supplemented with minimal amounts of concentrates. Roundbale silage was produced from timothy‐dominated swards harvested at three stages of maturity: stages 1 and 2 were dominated by tillers in stem elongation with two and three visible nodes, respectively, and stage 3 by tillers at early heading, with visible heads, but without head stems. Crops were wilted rapidly and a formic acid‐based additive applied. All silages were preserved with restricted fermentation. Silage DOMD values were 0·747, 0·708 and 0·647 for harvesting time (H) 1, 2 and 3 respectively. Silages were fed ad libitum as sole feed, or supplemented with 2–4 kg concentrate at increasing LW, to six bulls per treatment from age 7 months (288 kg) to slaughter at 575 kg. Daily LW gain for bulls fed unsupplemented silage was 1423, 1262 and 936 g, respectively, for H1, H2 and H3, and 1570, 1567 and 1357 g for supplemented bulls. For concentrate‐supplemented bulls, higher energy intake increased proportions of carcass fat more for H1 (0·163) than for H2 (0·134) but the same amount of energy was retained in the carcass per MJ net energy growth intake for these two groups. It is concluded that, apart from milk and concentrate fed to calves during the first months, an intensive beef production with NRF bulls finished before 15 months of age may be based entirely on local grass resources. 相似文献
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几种洋兰的生物学特性及栽培管理技术 总被引:1,自引:0,他引:1
本文介绍了几种洋兰的生物学特性与栽培管理技术.生物学特性包括洋兰根的形状、茎的类型、叶的形状与厚度、花的颜色或色斑等;栽培管理技术包括适宜的温度、湿度、光照、水份、肥料及病虫害防治等. 相似文献
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通过阐述《红楼梦》中的茶具、茶品和泡茶用水来展现《红楼梦》中清代茶文化的文化内涵、历史意义、生活情趣、学术价值等。 相似文献
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