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采用同一基质、不同生根剂进行具鳞水柏枝硬枝扦插育苗对比试验。结果表明:不同生根剂对插穗生根影响不存在显著性差异。秋季温室苗床扦插较易生根,插穗不需要特殊处理就可生根成活,成活率达93.50%,且根质好,根系分布均匀,而且经济实惠。 相似文献
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树龄及扦插时期和采穗部位对费约果嫩枝扦插生根的影响 总被引:1,自引:1,他引:0
采用L9(34)正交试验设计,研究树龄、扦插时期和采穗部位对费约果嫩枝插穗生根的影响。结果表明:树龄、扦插时期和采穗部位对费约果嫩枝插穗生根状况的影响均达显著水平;各因素对根长影响的主次顺序为母株树龄采穗部位扦插时期,对根数影响的主次顺序为母株树龄扦插时期采穗部位,对生根率影响的主次顺序为母株树龄扦插时期采穗部位;以1 a生母株下部枝条作插穗,于6月20日扦插效果最佳,生根率为97.7%,插穗的平均根数为5.6条,平均根长为17.1 cm。 相似文献
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研究了不同基质和不同植物生长调节剂对芙蓉花扦插繁殖的效应,以及嫁接时间、剪砧时间、砧穗组合对芙蓉花嫁接繁殖的效应。结果表明,6个抗病虫品种插穗的生根能力大小顺序为CDS-5>CDS-1>CDS-6>CDS-4>CDS-3>CDS-2。利用芽插技术可以提高CDS-2的扦插生根率。不同基质间插穗死亡率的差异不显著。以蛭石作基质进行扦插繁殖效果最好。腐殖土基质中插穗的生长势比其它基质好。3种植物生长调节剂处理对芙蓉花的扦插存活影响不显著。在夏季嫁接芙蓉花成活率高,剪砧宜在嫁接后10d左右进行。 相似文献
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《北方园艺》2020,(16)
以石榴为试材,采用硬枝扦插的方法,以田园土、沙和混合土(沙∶田园土=1∶1)为基质,选取直径为0.4、0.6、0.8 cm的插穗分别与基质进行组合试验,以期探讨不同基质和插穗粗度对石榴硬枝扦插的影响,筛选最适合石榴扦插的方案。结果表明:不同基质对成活率、最长根长、根总长、根总表面积、叶绿素和最长枝有显著或极显著影响。不同插穗粗度对成活率、叶绿素和最长枝没有显著影响,但插穗粗度对最长根长、根总长、根总表面积有显著影响,0.6 cm和0.8 cm插穗粗度均有利于根总长和根总表面积增加,对最长根长来说基质与粗度有互作。最有利于扦插石榴生根的基质是沙,3种粗度的枝条中以0.6 cm和0.8 cm粗度做插穗好。最适合生根的组合为沙+0.6 cm/0.8 cm插穗。 相似文献
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本文以槠叶齐、福云6号、福鼎大白茶、鄂茶1号茶树品种为供试材料,研究不同季节、不同基质、不同生长调节剂对供试品种茶树扦插生根的影响。结果表明:茶树在春、夏、秋三季均能扦插成活,最适宜的时期为9月中旬;扦插基质以园土+河沙最佳,其次是河沙,在园土和泥炭土+蛭石+更珍珠岩(5:3:1)中的插条生根率低,苗高矮;采用浸泡法时,用浓度为50mg/L的ABT2#浸泡插穗10min生根率最高;遮荫能显著提高茶树扦插生根率,其中以遮荫网+薄膜效果最好;在相同处理条件下,槠叶齐、福云6号、福鼎大白茶的扦插生根率明显大于鄂茶1号。 相似文献
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本文以槠叶齐、福云6号、福鼎大白荼、鄂茶1号茶树品种为供试材料,研究不同季节、不同基质、不同生长调节剂对供试品种茶树扦插生根的影响。结果表明:茶树在春、夏、秋三季均能扦插成活,最适宜的时期为9月中旬;扦插基质以园土+河沙最佳,其次是河沙,在园土和泥炭土+蛭石+更珍珠岩(5:3:1)中的插条生根率低,苗高矮;采用浸泡法时,用浓度为50mg/L的ABT2#浸泡插穗10min生根率最高;遮荫能显著提高茶树扦插生根率,.其中以遮荫网+薄膜效果最好;在相同处理条件下,槠叶齐、福云6号、福鼎大白荼的扦插生根率明显大于部荼1号。 相似文献
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The effect of shading dahlia mother plants on rootability of cuttings was studied with three cultivars: ‘Choot Hashani’, ‘Orpheo’ and ‘Lavender Perfection’. Reducing natural light intensity by approximately 50% increased rooting percentage of ‘Orpheo’ cuttings, but did not affect rooting of the harder cuttings of ‘Lavender Perfection’. Shading stock plants during midday hours only caused internode elongation in ‘Orpheo’, but did not increase rooting. In ‘Choot Hashani’ the same shading treatment promoted rooting. Shading only the base of the cutting when still on the mother plant greatly promoted rooting percentage and mean number of roots per cutting. The reason for the variability in the response to shading is discussed and it is concluded that the shading effect is limited to the root initiation region. It is assumed that shading improves rooting by promoting the herbaceous character of the rooting region. Shading did not affect rooting of cuttings which remained woody in spite of shade. 相似文献
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有色地膜覆盖对洋葱生长及产量的影响 总被引:2,自引:0,他引:2
研究了有色地膜覆盖的温度效应及其对洋葱生长发育和产量的影响。结果表明,无色透明膜的增温效果优于黑色膜及银灰膜,但三者在低 温越冬期差异较小。越冬期不同地膜覆盖洋葱幼苗的株高、假茎粗及各器官生长量均差异不大,但均略高于不覆膜对照。翌年春季无色透明膜覆盖 的洋葱植株返青较早,生长量较大,银灰膜及黑色膜次之,不覆膜对照较小。至5月,无色透明膜地温过高,抑制了洋葱植株的生长,银灰膜覆盖的 洋葱植株生长量逐渐超过无色透明膜,而黑色膜仍低于无色透明膜,但三者均明显高于不覆膜对照。收获时银灰膜、无色透明膜及黑色膜覆盖的洋 葱产量分别达84 400、77 400、70 600 kg·hm-2,分别比不覆膜对照增产 158.9 %、137.4 %和116.6 %。 相似文献
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以生产上的经验灌水量每次30 m3•(667 m2)-1-未覆膜(G30N)为对照,研究不同覆盖方式和灌水量对甘蓝水分利用和干物质积累的影响。结果表明:随着灌水量的增大,渗漏量、蒸发量增加,蒸腾量以G30N最大,其中膜孔灌溉处理(除蒸发量外)均大于裸地灌溉,而土壤储水量降低|裸地灌溉下增加灌水量可以提高甘蓝的外叶、叶球、根和总干物质量,0~10 cm和0~30 cm土层根质量增加,10~30 cm土层根质量则减少,膜孔灌溉下适当减少灌水量,则甘蓝的各部分干物质量相应提高,且减少灌水量能有效地增加各层根系干质量|增大灌水量,甘蓝产量增加,但水分利用效率则降低,且膜孔灌溉处理的产量和水分利用效率均大于裸地灌溉。综合甘蓝生产和节水两方面考虑,裸地灌溉每次20 m3•(667 m2)-1,或者膜孔灌溉每次10 m3•(667 m2)-1处理的效果较好,值得在生产上推广。 相似文献
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东南景天茎插和叶插繁殖研究 总被引:1,自引:0,他引:1
研究了人工气候箱里东南景天在不同植物激素(NAA 1 000 mg/L、IBA 500 mg/L)和不同空气湿度(60%、80%)组合下茎插繁殖和在不同基质的叶插繁殖.结果表明:光照强度80%和温度20~25℃下东南景天叶插插穗在蛭石∶珍珠岩=1∶1基质上生根最快、根长最长、根量最多、成活率最高,且都显著优于其它基质(p<0.05,下同);东南景天茎插在60%空气湿度下显著优于湿度80%的、插穗用IBA处理比用NAA处理要好;60%空气湿度下经IBA 500 mg/L处理过的东南景天茎插插穗的生根最快,成活率、累计发芽率、根量评分最高,发芽略慢,最长根长略短,但植株整体生长状态最好,且都明显优于其它处理,是进行茎插繁殖的最佳处理组合.该研究为东南景天的快速繁殖、资源保护以及重金属污染土壤修复应用提供技术保障. 相似文献
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Plastic film mulches are often associated with increases in plant growth and yield of vegetable crops. Few studies, however, report on the effect of plastic film mulches on root zone temperature on broccoli. The objectives of this study were to determine the effects of colored plastic mulches on root zone temperature and broccoli plant growth and yield Broccoli (‘Packman’) plants were grown using plastic film mulch and drip irrigation. The treatments consisted of plastic film mulch (black, blue, gray on black, red, silver on black, and white on black mulches) and bare soil. Colored plastic film mulches affected root zone temperature and the accumulation of soil degree-days. Mean daily RZT, maximal daily RZT and degree day accumulation in the soil were highest in dark-colored mulches (blue, black, red, and gray) and lowest in light-colored mulches (silver and white), while minimal daily RZT was highest in silver mulch and lowest in white mulch. Silver mulch showed the smallest diurnal fluctuations in RZT among plastic mulches, with the highest RZT during the night and among the lowest in the afternoon. Colored plastic mulches also affected broccoli plant growth and yield, although the effect of mulches was more dramatic in the spring than in the fall seasons. Broccoli yield was linearly related to both the vegetative top dry weight and root dry weight of mature plants. Broccoli yield was little affected at mean RZT of <21 °C but increased with increasing mean RZTs above 21 °C up to 25 °C. Thus, broccoli plant growth and yield responded more favorably to dark-colored mulches than to light-colored mulches, suggesting that broccoli benefited from increased soil warming. No high RZT stress effects on broccoli plant growth or yield were observed in this study. Thus, this study suggests that plastic film mulches, particularly the dark-colored mulches, may be an option for spring broccoli production in areas with cool conditions early in the spring. 相似文献