CN110337981A - 一种番荔枝砧木快速育苗方法 - Google Patents

一种番荔枝砧木快速育苗方法 Download PDF

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CN110337981A
CN110337981A CN201910707342.XA CN201910707342A CN110337981A CN 110337981 A CN110337981 A CN 110337981A CN 201910707342 A CN201910707342 A CN 201910707342A CN 110337981 A CN110337981 A CN 110337981A
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seedling
seed
manaca
cultivating method
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CN110337981B (zh
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孔方南
李文砚
赵静
杨志强
周婧
韦优
卢美瑛
罗培四
蒋娟娟
卓福昌
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Guangxi South Subtropical Agricultural Science Research Institute
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Abstract

本发明公开一种番荔枝砧木快速育苗方法,属于果树育种技术领域。本发明通过选种、种子预处理、种子处理、苗床准备、播种、育苗、移苗和幼苗后期管理等步骤,有效的解决了传统番荔枝砧木育苗出苗慢、出苗率低、出苗不整齐,出苗后生长缓慢,且品种间亲和性不强等问题,番荔枝种子发芽时间短、生长速度快,幼苗生长整齐良好,育苗成活率可以达到90%以上,较传统种植方法提高了85%以上。

Description

一种番荔枝砧木快速育苗方法
技术领域
本发明属于果树育种技术领域,具体涉及一种番荔枝砧木快速育苗方法。
背景技术
番荔枝,别名释迦、林檎、佛头果,为番荔枝科番荔枝属多年生半落叶性小乔木,具有食用、药用、观赏等用途。果实含有大量的蛋白质、碳水化合物及多种维生素,营养价值高。番荔枝目前以鲜食为主,亦可加工成果汁、果露、果酱、果酒、果冻、糖果等。番荔枝种子、叶片、树皮均含有生物碱,可治疗赤痢。番荔枝种子含有黄色干性油,可以用来杀虱洗发。番荔枝叶片磨成粉末可治疗癣疥及用作拔浓剂。番荔枝树形优美、果形奇特,具有园林景观价值。番荔枝在中国浙江、台湾、福建、广东、广西、海南和云南等省区均有栽培。
番荔枝的繁殖方法有种子繁殖和嫁接繁殖。番荔枝喜温暖不耐寒冷,种子外壳坚硬,休眠期较长,直接在土壤播种繁育,发芽时间长达280-300天,发芽率低、出苗慢,气温低时甚至不发芽。广西地区当年播种的种子因出苗慢,到冬天长势不够健壮,大部分易受寒害死亡;此外,嫁接时种间不亲和也容易造成番荔枝长势不良甚至死亡,因此,通过选取番荔枝抗寒品、亲和性强的品种作为砧木,对番荔枝的育苗技术、引种繁殖具有重要意义。
发明内容
本发明目的是提供一种番荔枝砧木快速育苗方法,通过选种、种子预处理、种子处理、苗床准备、播种、育苗、移苗和幼苗后期管理等步骤,有效的解决了传统番荔枝砧木育苗出苗慢、出苗率低、出苗不整齐,出苗后生长缓慢,且品种间亲和性不强等问题。
本发明通过以下技术方案实现:
一种番荔枝砧木快速育苗方法,包括以下步骤:
(1)选种:选择饱满有光泽、无病虫害、单个大小均匀的种子,将种子进行浸水浮选45-50h,选用浮选沉底的种子,捞出,备用;
(2)种子预处理:将筛选出来的种子放入1000倍多菌灵溶液中浸泡20-30min杀菌防虫,再用清水冲洗5-10min后置于37-38℃的饱和水蒸汽环境中,同时通入环氧乙烷、溴甲烷和二氧化碳的气体混合物,进行熏蒸处理,时间为3-5min,得到经预处理的种子;所述气体混合物的体积比组成为:环氧乙烷20-25%,溴甲烷10-15%,二氧化碳60-70%;
(3)种子处理:将经预处理的种子放入生根溶液中浸泡30-60min,取出,得到经处理的种子;所述生根溶液为0.05-0.1%吲哚丁酸、0.05-0.1%α-萘乙酸钠、0.05-0.1%ABT2号生根粉、0.05-0.1%水杨酸、0.05-0.1%硼酸、0.05-0.1%维生素B1、0.05-0.1%高锰酸钾、0.05-0.1%乙醇,余量为水;
(4)苗床准备:在沙床中倒入河沙,先用清水淋透沙床,再用杀菌溶液淋透沙床,对沙床进行深翻刨松,并进行烈日暴晒,得到经处理的沙床;
(5)播种:将经处理的种子播种于经处理的沙床中,并用甲霜·噁霉灵1200倍液淋透沙床,保证棚内空气湿度为85-90%;
(6)育苗:播种后每隔7-10天用杀菌溶液杀菌,发芽后每次杀菌时,还在杀菌溶液中加入壮根剂;
(7)移苗:当苗长到高15cm,径粗2mm,根长10cm,叶片5片及以上,上袋移苗至大棚;
(8)幼苗后期管理:对上袋后的幼苗进行遮光处理,保证大棚内空气湿度为70-80%,移植后第7天淋一次壮根溶液,之后每隔7-10天施一次肥料,当幼苗径粗达到8mm以上即可进行嫁接;
所述杀菌溶液为甲基托布津1000倍液5-10份、甲霜·噁霉灵1200倍液5-10份、茶皂素10-20份、苏云金杆菌5-20份、大蒜提取液5-10份,混合均匀后用水稀释至重量百分比为0.5-2%。
作为技术方案的优选,所述番荔枝的品种为牛心番荔枝。
作为技术方案的优选,所述河沙为过50-80目筛的河沙。
作为技术方案的优选,所述播种用点播的方式,播种深度为1.5-2cm。
作为技术方案的优选,通过喷雾装置调节大棚内空气湿度。
作为技术方案的优选,所述壮根剂的组成为5-10%尿素、5-8%硫酸钾、3-5%腐殖酸钾、3-5%过磷酸钙、0.05-0.1%吲哚丁酸、0.03-0.05%α-萘乙酸钠、0.3-0.8%乙醇、0.3-0.5%水杨酸,余量为水;所述壮根剂pH范围在6.0-8.0。
作为技术方案的优选,所述移苗使用无纺布袋,袋内装有基质,所述基质为黄土、珍珠岩、椰糠和有机质按质量比为5-7:1:0.5:2均匀混合搅拌制成。
作为技术方案的优选,用黑色遮阳网对上袋后的幼苗进行遮光处理。
作为技术方案的优选,所述壮根溶液的组成为10-20%尿素、10-15%腐殖酸钾、5-10%硫酸钾、3-5%蚯蚓粪、1-3%蔗糖、0.5-0.8%硝酸钙、0.3-0.5%磷酸铵、0.3-0.5%硫酸镁、0.03-0.05%七水硫酸亚铁,余量为水;所述壮根溶液pH范围在6.0-8.0。
作为技术方案的优选,所述肥料为水溶肥,组成为肽糖营养素20-30%、有机质10-20%、海藻硒10-20%、海藻酸10-20%、鱼蛋白10-20%,以及微量元素硼0.05-0.1%、锌0.05-0.1%、钼0.05-0.1%,余量为水;所述肥料pH范围在6.0-8.0。
蚯蚓粪是一种从蚯蚓中排出的有机肥料,含有氮、磷、钾等营养元素,并含有多种微量元素,它能补充植物生长所需的综合营养素,帮助植物生长旺盛、茂密。
茶皂素为从茶籽饼中提炼出来的一种三萜类皂角甙,其既可以作为杀虫剂防治病虫害,也可以作为可湿性农药的湿润剂,其与甲基托布津、甲霜·噁霉灵、大蒜提取液和苏云金杆菌混合后,能明显改善植物源农药大蒜提取液的湿润性能,有效提高其悬浮率,也极大的增强了混合农药对虫、菌的防治效果。
大蒜提取液作为植物源农药,具有特定性、天然性的特点,药效持久,安全无毒,不会对幼苗产生伤害。
苏云金杆菌是一种包括许多变种的产晶体芽孢杆菌,以胃毒作用为主,施用后可使害虫停止取食,最后害虫因饥饿而死亡。
本发明的肽糖营养素、有机质、海藻硒、海藻酸和鱼蛋白先用水稀释800-1500倍后再混合组成水溶肥,得到的水溶肥能快速渗透到番荔枝植物体内,加快其新陈代谢,增强其抗病抗逆能力。
以上提到的原料都可以在市场上购买得到,不需特别制备。
与现有技术相比,本发明的优点及有益效果为:
(1)本发明的方法能使番荔枝种子发芽时间短、生长速度快,幼苗生长整齐良好,育苗成活率可以达到90%以上,有效的解决了传统番荔枝砧木育苗出苗慢、出苗率低、出苗不整齐,出苗后生长缓慢,且品种间亲和性不强等问题。
(2)本发明对种子预处理,采用了20-25%环氧乙烷,10-15%溴甲烷,60-70%二氧化碳组成的混合物的水蒸汽熏蒸处理方法,能够增强对种子的脱毒杀菌的效果并有利于降低熏蒸的温度,有利于种子生根,在消毒杀菌的同时不会对种子造成伤害。
(3)本发明在种子处理步骤中用由吲哚丁酸、α-萘乙酸钠、ABT 2号生根粉、水杨酸、硼酸、维生素B1、高锰酸钾、乙醇和水组成的生根溶液对种子进行浸泡,能有效促进番荔枝种子细胞分裂,诱导不定根的形成,并能促使不定根原基爆发性生根,同时具有杀菌消毒的作用。此外,在育苗步骤中使用壮根剂,在幼苗后期管理步骤中使用壮根溶液和肥料,能够确保番荔枝苗根部生长旺盛,植株长势健壮,抗寒能力增强,有效避免了因冬季寒冷造成的死亡,育苗成活率可以达到90%以上,较传统种植方法提高了85%以上。
(4)本发明用由甲基托布津1000倍液、甲霜·噁霉灵1200倍液、茶皂素、苏云金杆菌、大蒜提取液和水组成的杀菌溶液进行杀菌,杀菌效果好,安全环保无毒,适合长期使用,不会对产生抗药性。
具体实施方式
下面将结合具体实施例对本发明进一步详细说明,但不限于本发明的保护范围。
实施例1
(1)选种:选择饱满有光泽、无病虫害、单个大小均匀的牛心番荔枝种子,将种子进行浸水浮选48h,选用浮选沉底的种子,捞出,备用。
(2)种子预处理:将筛选出来的种子放入1000倍多菌灵溶液中浸泡27min杀菌防虫,再用清水冲洗8min后置于37-38℃的饱和水蒸汽环境中,同时通入体积比组成为:环氧乙烷25%、溴甲烷15%和二氧化碳60%的气体混合物,进行熏蒸处理,时间为4min,得到经预处理的种子。
(3)种子处理:将经预处理的种子放入生根溶液中浸泡50min,取出,得到经处理的种子;所用生根溶液为0.08%吲哚丁酸、0.07%α-萘乙酸钠、0.08%ABT 2号生根粉、0.07%水杨酸、0.08%硼酸、0.07%维生素B1、0.08%高锰酸钾、0.07%乙醇,余量为水。
(4)苗床准备:在沙床中倒入过70目筛的河沙,先用清水淋透沙床,再用杀菌溶液淋透沙床,对沙床进行深翻刨松,并进行烈日暴晒,得到经处理的沙床;所用杀菌溶液为甲基托布津1000倍液8份、甲霜·噁霉灵1200倍液7份、茶皂素17份、苏云金杆菌15份、大蒜提取液8份,混合均匀后用水稀释至重量百分比为1.5%。
(5)播种:将经处理的种子用点播的方式播种于经处理的沙床中,播种深度为1.5-2cm,并用甲霜·噁霉灵1200倍液淋透沙床,通过喷雾装置调节大棚内空气湿度保证棚内空气湿度为85-90%。
(6)育苗:播种后每隔8天用杀菌溶液杀菌,所用杀菌溶液为甲基托布津1000倍液8份、甲霜·噁霉灵1200倍液7份、茶皂素17份、苏云金杆菌15份、大蒜提取液8份,混合均匀后用水稀释至重量百分比为1.5%;发芽后每次杀菌时,还在杀菌溶液中加入壮根剂,壮根剂的组成为8%尿素、7%硫酸钾、4%腐殖酸钾、4%过磷酸钙、0.08%吲哚丁酸、0.04%α-萘乙酸钠、0.6%乙醇、0.4%水杨酸,余量为水,pH范围在6.0-8.0。
(7)移苗:当苗长到高15cm,径粗2mm,根长10cm,叶片5片及以上,上袋移苗至大棚,使用无纺布袋,袋内装有黄土、珍珠岩、椰糠和有机质按质量比为6:1:0.5:2均匀混合搅拌制成的基质。
(8)幼苗后期管理:用黑色遮阳网对上袋后的幼苗进行遮光处理,通过喷雾装置调节大棚内空气湿度保证大棚内空气湿度为70-80%,移植后第7天淋一次壮根溶液,所用壮根溶液的组成为18%尿素、12%腐殖酸钾、8%硫酸钾、4%蚯蚓粪、2%蔗糖、0.7%硝酸钙、0.4%磷酸铵、0.4%硫酸镁、0.04%七水硫酸亚铁,余量为水,pH范围在6.0-8.0;之后每隔8天施一次肥料,所用肥料为水溶肥,组成为肽糖营养素25%、有机质15%、海藻硒15%、海藻酸15%、鱼蛋白15%,以及微量元素硼0.08%、锌0.07%、钼0.08%,余量为水,pH范围在6.0-8.0;当幼苗径粗达到8mm以上即可进行嫁接。
实施例2
(1)选种:选择饱满有光泽、无病虫害、单个大小均匀的牛心番荔枝种子,将种子进行浸水浮选47h,选用浮选沉底的种子,捞出,备用。
(2)种子预处理:将筛选出来的种子放入1000倍多菌灵溶液中浸泡23min杀菌防虫,再用清水冲洗7min后置于37-38℃的饱和水蒸汽环境中,同时通入体积比组成为:环氧乙烷23%、溴甲烷12%和二氧化碳65%的气体混合物,进行熏蒸处理,时间为4min,得到经预处理的种子。
(3)种子处理:将经预处理的种子放入生根溶液中浸泡40min,取出,得到经处理的种子;所用生根溶液为0.07%吲哚丁酸、0.08%α-萘乙酸钠、0.07%ABT 2号生根粉、0.08%水杨酸、0.07%硼酸、0.08%维生素B1、0.07%高锰酸钾、0.08%乙醇,余量为水。
(4)苗床准备:在沙床中倒入过60目筛的河沙,先用清水淋透沙床,再用杀菌溶液淋透沙床,对沙床进行深翻刨松,并进行烈日暴晒,得到经处理的沙床;所用杀菌溶液为甲基托布津1000倍液7份、甲霜·噁霉灵1200倍液8份、茶皂素13份、苏云金杆菌10份、大蒜提取液7份,混合均匀后用水稀释至重量百分比为1%。
(5)播种:将经处理的种子用点播的方式播种于经处理的沙床中,播种深度为1.5-2cm,并用甲霜·噁霉灵1200倍液淋透沙床,通过喷雾装置调节大棚内空气湿度保证棚内空气湿度为85-90%。
(6)育苗:播种后每隔9天用杀菌溶液杀菌,所用杀菌溶液为甲基托布津1000倍液7份、甲霜·噁霉灵1200倍液8份、茶皂素13份、苏云金杆菌10份、大蒜提取液7份,混合均匀后用水稀释至重量百分比为1%;发芽后每次杀菌时,还在杀菌溶液中加入壮根剂,壮根剂的组成为7%尿素、6%硫酸钾、4%腐殖酸钾、4%过磷酸钙、0.07%吲哚丁酸、0.04%α-萘乙酸钠、0.5%乙醇、0.4%水杨酸,余量为水,pH范围在6.0-8.0。
(7)移苗:当苗长到高15cm,径粗2mm,根长10cm,叶片5片及以上,上袋移苗至大棚,使用无纺布袋,袋内装有黄土、珍珠岩、椰糠和有机质按质量比为6:1:0.5:2均匀混合搅拌制成的基质。
(8)幼苗后期管理:用黑色遮阳网对上袋后的幼苗进行遮光处理,通过喷雾装置调节大棚内空气湿度保证大棚内空气湿度为70-80%,移植后第7天淋一次壮根溶液,所用壮根溶液的组成为13%尿素、13%腐殖酸钾、7%硫酸钾、3.5%蚯蚓粪、2.5%蔗糖、0.6%硝酸钙、0.4%磷酸铵、0.4%硫酸镁、0.04%七水硫酸亚铁,余量为水,pH范围在6.0-8.0;之后每隔9天施一次肥料,所用肥料为水溶肥,组成为肽糖营养素27%、有机质13%、海藻硒18%、海藻酸12%、鱼蛋白12%,以及微量元素硼0.07%、锌0.08%、钼0.07%,余量为水,pH范围在6.0-8.0;当幼苗径粗达到8mm以上即可进行嫁接。
实施例3
(1)选种:选择饱满有光泽、无病虫害、单个大小均匀的牛心番荔枝种子,将种子进行浸水浮选50h,选用浮选沉底的种子,捞出,备用。
(2)种子预处理:将筛选出来的种子放入1000倍多菌灵溶液中浸泡30min杀菌防虫,再用清水冲洗10min后置于37-38℃的饱和水蒸汽环境中,同时通入体积比组成为:环氧乙烷22%、溴甲烷13%和二氧化碳65%的气体混合物,进行熏蒸处理,时间为5min,得到经预处理的种子。
(3)种子处理:将经预处理的种子放入生根溶液中浸泡60min,取出,得到经处理的种子;所用生根溶液为0.1%吲哚丁酸、0.05%α-萘乙酸钠、0.1%ABT 2号生根粉、0.05%水杨酸、0.1%硼酸、0.05%维生素B1、0.1%高锰酸钾、0.05%乙醇,余量为水。
(4)苗床准备:在沙床中倒入过80目筛的河沙,先用清水淋透沙床,再用杀菌溶液淋透沙床,对沙床进行深翻刨松,并进行烈日暴晒,得到经处理的沙床;所用杀菌溶液为甲基托布津1000倍液10份、甲霜·噁霉灵1200倍液5份、茶皂素20份、苏云金杆菌5份、大蒜提取液10份,混合均匀后用水稀释至重量百分比为0.5%。
(5)播种:将经处理的种子用点播的方式播种于经处理的沙床中,播种深度为1.5-2cm,并用甲霜·噁霉灵1200倍液淋透沙床,通过喷雾装置调节大棚内空气湿度保证棚内空气湿度为85-90%。
(6)育苗:播种后每隔7天用杀菌溶液杀菌,所用杀菌溶液为甲基托布津1000倍液10份、甲霜·噁霉灵1200倍液5份、茶皂素20份、苏云金杆菌5份、大蒜提取液10份,混合均匀后用水稀释至重量百分比为0.5%;发芽后每次杀菌时,还在杀菌溶液中加入壮根剂,壮根剂的组成为10%尿素、5%硫酸钾、5%腐殖酸钾、3%过磷酸钙、0.1%吲哚丁酸、0.03%α-萘乙酸钠、0.8%乙醇、0.3%水杨酸,余量为水,pH范围在6.0-8.0。
(7)移苗:当苗长到高15cm,径粗2mm,根长10cm,叶片5片及以上,上袋移苗至大棚,使用无纺布袋,袋内装有黄土、珍珠岩、椰糠和有机质按质量比为5:1:0.5:2均匀混合搅拌制成的基质。
(8)幼苗后期管理:用黑色遮阳网对上袋后的幼苗进行遮光处理,通过喷雾装置调节大棚内空气湿度保证大棚内空气湿度为70-80%,移植后第7天淋一次壮根溶液,所用壮根溶液的组成为20%尿素、15%腐殖酸钾、5%硫酸钾、5%蚯蚓粪、1%蔗糖、0.8%硝酸钙、0.3%磷酸铵、0.5%硫酸镁、0.03%七水硫酸亚铁,余量为水,pH范围在6.0-8.0;之后每隔7天施一次肥料,所用肥料为水溶肥,组成为肽糖营养素20%、有机质10%、海藻硒20%、海藻酸10%、鱼蛋白20%,以及微量元素硼0.1%、锌0.05%、钼0.1%,余量为水,pH范围在6.0-8.0;当幼苗径粗达到8mm以上即可进行嫁接。
实施例4
(1)选种:选择饱满有光泽、无病虫害、单个大小均匀的牛心番荔枝种子,将种子进行浸水浮选45h,选用浮选沉底的种子,捞出,备用。
(2)种子预处理:将筛选出来的种子放入1000倍多菌灵溶液中浸泡20min杀菌防虫,再用清水冲洗5min后置于37-38℃的饱和水蒸汽环境中,同时通入体积比组成为:环氧乙烷20%、溴甲烷10%和二氧化碳70%的气体混合物,进行熏蒸处理,时间为3min,得到经预处理的种子。
(3)种子处理:将经预处理的种子放入生根溶液中浸泡30min,取出,得到经处理的种子;所用生根溶液为0.05%吲哚丁酸、0.1%α-萘乙酸钠、0.05%ABT 2号生根粉、0.1%水杨酸、0.05%硼酸、0.1%维生素B1、0.05%高锰酸钾、0.1%乙醇,余量为水。
(4)苗床准备:在沙床中倒入过50目筛的河沙,先用清水淋透沙床,再用杀菌溶液淋透沙床,对沙床进行深翻刨松,并进行烈日暴晒,得到经处理的沙床;所用杀菌溶液为甲基托布津1000倍液5份、甲霜·噁霉灵1200倍液10份、茶皂素10份、苏云金杆菌20份、大蒜提取液5份,混合均匀后用水稀释至重量百分比为2%。
(5)播种:将经处理的种子用点播的方式播种于经处理的沙床中,播种深度为1.5-2cm,并用甲霜·噁霉灵1200倍液淋透沙床,通过喷雾装置调节大棚内空气湿度保证棚内空气湿度为85-90%。
(6)育苗:播种后每隔10天用杀菌溶液杀菌,所用杀菌溶液为甲基托布津1000倍液5份、甲霜·噁霉灵1200倍液10份、茶皂素10份、苏云金杆菌20份、大蒜提取液5份,混合均匀后用水稀释至重量百分比为2%;发芽后每次杀菌时,还在杀菌溶液中加入壮根剂,壮根剂的组成为5%尿素、8%硫酸钾、3%腐殖酸钾、5%过磷酸钙、0.05%吲哚丁酸、0.05%α-萘乙酸钠、0.3%乙醇、0.5%水杨酸,余量为水,pH范围在6.0-8.0。
(7)移苗:当苗长到高15cm,径粗2mm,根长10cm,叶片5片及以上,上袋移苗至大棚,使用无纺布袋,袋内装有黄土、珍珠岩、椰糠和有机质按质量比为7:1:0.5:2均匀混合搅拌制成的基质。
(8)幼苗后期管理:用黑色遮阳网对上袋后的幼苗进行遮光处理,通过喷雾装置调节大棚内空气湿度保证大棚内空气湿度为70-80%,移植后第7天淋一次壮根溶液,所用壮根溶液的组成为10%尿素、10%腐殖酸钾、10%硫酸钾、3%蚯蚓粪、3%蔗糖、0.5%硝酸钙、0.5%磷酸铵、0.3%硫酸镁、0.05%七水硫酸亚铁,余量为水,pH范围在6.0-8.0;之后每隔10天施一次肥料,所用肥料为水溶肥,组成为肽糖营养素30%、有机质20%、海藻硒10%、海藻酸20%、鱼蛋白10%,以及微量元素硼0.05%、锌0.1%、钼0.05%,余量为水,pH范围在6.0-8.0;当幼苗径粗达到8mm以上即可进行嫁接。
对实施例1-4播种的番荔枝种子的出苗情况及苗的生长情况进行统计,结果如表1所示。
表1本发明的番荔枝种子的出苗情况及苗的生长情况
从表1可以看出,与传统方法相比,本发明的方法使番荔枝从播种到种子发芽时间由280-300天缩短为10-15天,时间缩短了95%以上;出苗率由10%提高至90%以上;苗成活率由5%提高至90%以上;播种到可进行嫁接时间由500-560天缩短为255-285天,时间缩短了一半。可见,本发明的方法能使番荔枝种子发芽时间短、生长速度快,幼苗生长整齐良好,育苗成活率可以达到90%以上,较传统种植方法提高了85%以上。

Claims (10)

1.一种番荔枝砧木快速育苗方法,其特征在于,包括以下步骤:
(1)选种:选择饱满有光泽、无病虫害、单个大小均匀的种子,将种子进行浸水浮选45-50h,选用浮选沉底的种子,捞出,备用;
(2)种子预处理:将筛选出来的种子放入1000倍多菌灵溶液中浸泡20-30min杀菌防虫,再用清水冲洗5-10min后置于37-38℃的饱和水蒸汽环境中,同时通入环氧乙烷、溴甲烷和二氧化碳的气体混合物,进行熏蒸处理,时间为3-5min,得到经预处理的种子;所述气体混合物的体积比组成为:环氧乙烷20-25%,溴甲烷10-15%,二氧化碳60-70%;
(3)种子处理:将经预处理的种子放入生根溶液中浸泡30-60min,取出,得到经处理的种子;所述生根溶液为0.05-0.1%吲哚丁酸、0.05-0.1%α-萘乙酸钠、0.05-0.1%ABT2号生根粉、0.05-0.1%水杨酸、0.05-0.1%硼酸、0.05-0.1%维生素B1、0.05-0.1%高锰酸钾、0.05-0.1%乙醇,余量为水;
(4)苗床准备:在沙床中倒入河沙,先用清水淋透沙床,再用杀菌溶液淋透沙床,对沙床进行深翻刨松,并进行烈日暴晒,得到经处理的沙床;
(5)播种:将经处理的种子播种于经处理的沙床中,并用甲霜·噁霉灵1200倍液淋透沙床,保证棚内空气湿度为85-90%;
(6)育苗:播种后每隔7-10天用杀菌溶液杀菌,发芽后每次杀菌时,还在杀菌溶液中加入壮根剂;
(7)移苗:当苗长到高15cm,径粗2mm,根长10cm,叶片5片及以上,上袋移苗至大棚;
(8)幼苗后期管理:对上袋后的幼苗进行遮光处理,保证大棚内空气湿度为70-80%,移植后第7天淋一次壮根溶液,之后每隔7-10天施一次肥料,当幼苗径粗达到8mm以上即可进行嫁接;
所述杀菌溶液为甲基托布津1000倍液5-10份、甲霜·噁霉灵1200倍液5-10份、茶皂素10-20份、苏云金杆菌5-20份、大蒜提取液5-10份,混合均匀后用水稀释至重量百分比为0.5-2%。
2.根据权利要求1所述的番荔枝砧木快速育苗方法,其特征在于,所述番荔枝的品种为牛心番荔枝。
3.根据权利要求1所述的番荔枝砧木快速育苗方法,其特征在于,所述河沙为过50-80目筛的河沙。
4.根据权利要求1所述的番荔枝砧木快速育苗方法,其特征在于,所述播种用点播的方式,播种深度为1.5-2cm。
5.根据权利要求1所述的番荔枝砧木快速育苗方法,其特征在于,通过喷雾装置调节大棚内空气湿度。
6.根据权利要求1所述的番荔枝砧木快速育苗方法,其特征在于,所述壮根剂的组成为5-10%尿素、5-8%硫酸钾、3-5%腐殖酸钾、3-5%过磷酸钙、0.05-0.1%吲哚丁酸、0.03-0.05%α-萘乙酸钠、0.3-0.8%乙醇、0.3-0.5%水杨酸,余量为水;所述壮根剂pH范围在6.0-8.0。
7.根据权利要求1所述的番荔枝砧木快速育苗方法,其特征在于,所述移苗使用无纺布袋,袋内装有基质,所述基质为黄土、珍珠岩、椰糠和有机质按质量比为5-7:1:0.5:2均匀混合搅拌制成。
8.根据权利要求1所述的番荔枝砧木快速育苗方法,其特征在于,用黑色遮阳网对上袋后的幼苗进行遮光处理。
9.根据权利要求1所述的番荔枝砧木快速育苗方法,其特征在于,所述壮根溶液的组成为10-20%尿素、10-15%腐殖酸钾、5-10%硫酸钾、3-5%蚯蚓粪、1-3%蔗糖、0.5-0.8%硝酸钙、0.3-0.5%磷酸铵、0.3-0.5%硫酸镁、0.03-0.05%七水硫酸亚铁,余量为水;所述壮根溶液pH范围在6.0-8.0。
10.根据权利要求1所述的番荔枝砧木快速育苗方法,其特征在于,所述肥料为水溶肥,组成为肽糖营养素20-30%、有机质10-20%、海藻硒10-20%、海藻酸10-20%、鱼蛋白10-20%,以及微量元素硼0.05-0.1%、锌0.05-0.1%、钼0.05-0.1%,余量为水;所述肥料pH范围在6.0-8.0。
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