CN107517720A - 一种提高发芽率的西瓜种子实生苗培育方法 - Google Patents

一种提高发芽率的西瓜种子实生苗培育方法 Download PDF

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CN107517720A
CN107517720A CN201710882154.1A CN201710882154A CN107517720A CN 107517720 A CN107517720 A CN 107517720A CN 201710882154 A CN201710882154 A CN 201710882154A CN 107517720 A CN107517720 A CN 107517720A
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seedling
seed
watermelon
water
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王亚男
夏承东
王育鹏
方大伟
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ANHUI HUIDA AGRICULTURE Co Ltd
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Abstract

本发明公开了一种提高发芽率的西瓜种子实生苗培育方法,涉及西瓜育苗技术领域,包括如下步骤:(1)、种子预处理;(2)、浸种催芽;(3)、准备育苗基质;(4)、播种育苗;(5)、苗期管理。本发明缩短了育苗周期,提高了种子发芽率和实生苗成活率,壮苗指数高,根系发达、瓜藤繁茂。

Description

一种提高发芽率的西瓜种子实生苗培育方法
技术领域
本发明涉及西瓜育苗技术领域,具体涉及一种提高发芽率的西瓜种子实生苗培育方法。
背景技术
西瓜堪称“瓜中之王”,甘甜多汁,含有大量的葡萄糖、苹果糖、果糖、蛋白质、氨基酸、番茄素以及丰富的维生素C等营养物质,是一种营养、纯净的安全水果。其主要食用部分为发达的胎座,果实外皮光滑,呈绿色或黄色,果瓤多汁为红色或黄色,罕见白瓤。西瓜性寒、味甘甜,有清热解暑、生津止渴、利尿除烦的功效,有助于治胸膈气壅、满闷不舒服、小便不利、暑热,中暑等症,皮还可以做菜、入药等。
目前大多西瓜育苗技术,育苗周期长,发芽率和成活率不高,导致西瓜后期生长缓慢,经济效益低。
发明内容
本发明的目的是提供一种提高发芽率的西瓜种子实生苗培育方法,缩短了育苗周期,提高了种子发芽率和实生苗成活率,壮苗指数高,根系发达、瓜藤繁茂。
本发明提供了如下的技术方案:一种提高发芽率的西瓜种子实生苗培育方法,包括如下步骤:
(1)、种子预处理
选择颗粒饱满的西瓜种子,筛选除去瘪粒及破损粒,采用喷淋的方式用清水将西瓜种子喷湿,15~25min后,用细沙子按1.5:1的体积比例与西瓜种子混合,并搓揉,然后再用清水先淘洗后冲洗,从而去除种皮上的粘液;
将种子置于通风处晾晒2~4h后,在72~74℃条件下微波干燥处理2~3min,得到预处理后的种子,备用;
(2)、浸种催芽
准备浸种液,将步骤(1)得到的种子放入浸种液中,在50~55℃条件下浸泡30~45min,捞出洗净;
准备催芽箱,在催芽箱中设置紫外灯、并在箱底铺设一层厚度为3~4cm的细沙,将种子埋入细沙中,并将前述浸种液与清水按照1:2~3比例混合得到兑水后的浸种液,喷洒细沙,保持细沙湿润,待90%以上种子露白后,准备播种;
(3)、准备育苗基质
将营养土和药土按照5~8:1的比例混合搅拌均匀,得到育苗基质;
所述药土包括以下份计的原料:膨润土45~55份、复合酶15~25份、南天竹7~9份、雪松针7~9份、菱壳4~6份、野八角叶4~6份、木麻黄4~6份、木棉根1~3份、毛茉莉1~3份、素方花0.8~1.2份、愈疮木0.8~1.2份和辣木籽0.4~0.6份;
(4)、播种育苗
准备育苗棚,铺设步骤(3)得到的育苗基质,厚度为10~15cm,将催芽后的西瓜种子均匀播撒在育苗基质中,每亩播种4~4.5kg,播种后立即浇透水,然后用细土覆盖,细土的厚度为1~2cm,然后再覆盖一层地膜,直到西瓜幼苗出土,破膜放苗;
(5)、苗期管理
幼苗出土后,每隔1~2天喷施一次营养液,保持育苗棚内的温度为28~29℃、相对湿度为75~80%,光照12~14h,光照强度为400~500Lux;
每隔4天根部浇水一次、每隔1~2天叶面喷水一次、每隔10天根施水肥一次,直至移栽。
其中,所述步骤(2)的浸种液包括以下份计的原料:赤霉素0.1~0.3g/L、壳聚糖0.1~0.3g/L、乙烯利0.08~0.1g/L、维生素C 0.08~0.1g/L、0.1%-0.2%硝酸钾0.06~0.08g/L、吲哚丁酸钾0.06~0.08g/L、多菌灵0.04~0.06g/L、牛磺酸0.04~0.06g/L、维生素D 0.02~0.04g/L、维生素E 0.02~0.04g/L、硫酸亚铁0.02~0.04g/L、硼砂0.01~0.03g/L和余量为水,将各组分分别溶解于水后混合,充分搅拌均匀即得。
其中,所述步骤(3)的药土的制备方法为:将南天竹、雪松针、菱壳、野八角叶、木麻黄、木棉根、毛茉莉、素方花、愈疮木和辣木籽混合粉碎,过100~200目筛,得到中药粉末;然后加入3~5倍重量份的水,在57℃条件下浸泡1~2h,降温至37℃,得到中药浸泡料;向中药浸泡料中加入复合酶,在45~55℃条件下,搅拌酶解1~2h后煮沸15~20min,固液分离得到中药渣;将中药渣与膨润土混合均匀,得到所述药土。
其中,所述步骤(3)的复合酶包括以下份计的原料:纤维素酶7~9份、果胶酶4~6份和淀粉酶1~3份。
其中,所述步骤(3)的营养土包括以下份计的原料:田园土55~65份、膨胀珍珠岩45~55份、松针粉24~26份、菇渣24~26份、玉米秸秆14~16份、ABT生根粉14~16份、白沙泥14~16份、草木灰9~11份、酒糟9~11份、甘蔗渣9~11份、螃蟹壳5~7份、腐殖土5~7份、糖蜜发酵液4~6份、芝麻4~6份、锯末4~6份和水45~55份。
其中,所述步骤(5)的营养液包括以下份计的原料:硼酸0.01~0.03g/L、硫酸锌0.008~0.01g/L、硫酸铜0.006~0.008g/L、硫酸锰0.006~0.008g/L、硫酸铁0.006~0.008g/L、过磷酸钙0.004~0.006g/L、硝酸钙0.004~0.006g/L、硝酸钾0.001~0.003g/L和余量水。
其中,所述步骤(5)的水肥包括以下份计的原料:米糠45~55份、蜂蜜35~40份、贝壳粉24~26份、草木灰24~26份、尿素24~26份、蓖麻叶粉14~16份、番茄红素14~16份、葡萄糖14~16份、腐殖酸9~11份、氨基酸9~11份、磷酸二氢钾7~9份、硼酸4~6份、硫酸镁4~6份、萘乙酸1~3份和水99~102份。
其中,所述步骤(5)的西瓜苗出土后,每天用紫外线灯对西瓜苗进行照射,照射时间为2~5h。
本发明的有益效果:缩短了育苗周期,提高了种子发芽率和实生苗成活率,壮苗指数高,根系发达、瓜藤繁茂,具体如下:
(1)、本发明对西瓜种子进行预处理,筛选除去瘪粒及破损粒,去除种皮上的粘液,有利用提高浸种液的浸泡效率;
(2)、本发明在催芽前采用浸种液,浸泡可以使种子外壳疲软,易于破芽,其中,添加的赤霉素与吲哚乙酸溶液,可以使种子细胞***分化,从而促进种子胚的发育,缩短种子发芽时间,提高了种子的发芽率,并且能够保证发芽后的成活率;配合催芽方法,可以快速打破种子休眠,提高了发芽率;另外,浸种后的种子可以有效防治地下害虫,如蛴螬、蝼蛄、金针虫以及地老虎等,同时提高种子内吸性强,可以促进新陈代谢和同化物质的积累,从而对西瓜的病害有较好的防治较果;
(3)、本发明中,种子经过催芽处理后再育苗,出芽率高,苗出得齐、长得壮,并且长势匀称,大小均匀一致,保证了成熟期一致性,还能抵抗病虫害的侵扰,降低生产成本,提高经济收益;
(4)、本发明配制育苗基质,采用营养土和药土混合,不仅可以提供西瓜幼苗成长所需营养、促进生根,而且提高幼苗对病菌的抵抗性,可以起到抑菌作用,可以保持西瓜种子的胚芽活力,增强西瓜种苗自身抗逆性;播种覆土后用地膜覆盖;可以保水保肥,防水分蒸发、防晒抗旱,提高出苗率;出苗后对幼苗进行紫外线照射,可进一步杀菌,提高成活率;
(5)、本发明结合苗期管理,得到的西瓜幼苗,壮苗指数高,叶绿素含量高,根系发达、瓜藤繁茂,且生长期病害少,西瓜抗旱、抗寒能力强。
具体实施方式
下面结合具体实施例,进一步阐述本发明。这些实施例仅用于说明本发明而不用于限制本发明的范围。
实施例1
一种提高发芽率的西瓜种子实生苗培育方法,包括如下步骤:
(1)、种子预处理
选择颗粒饱满的西瓜种子,筛选除去瘪粒及破损粒,采用喷淋的方式用清水将西瓜种子喷湿,15min后,用细沙子按1.5:1的体积比例与西瓜种子混合,并搓揉,然后再用清水先淘洗后冲洗,从而去除种皮上的粘液;
将种子置于通风处晾晒2h后,在72℃条件下微波干燥处理2min,得到预处理后的种子,备用;
(2)、浸种催芽
准备浸种液,将步骤(1)得到的种子放入浸种液中,在50℃条件下浸泡30min,捞出洗净;
准备催芽箱,在催芽箱中设置紫外灯、并在箱底铺设一层厚度为3cm的细沙,将种子埋入细沙中,并将前述浸种液与清水按照1:2比例混合得到兑水后的浸种液,喷洒细沙,保持细沙湿润,待90%以上种子露白后,准备播种;
(3)、准备育苗基质
将营养土和药土按照5:1的比例混合搅拌均匀,得到育苗基质;
所述药土包括以下份计的原料:膨润土45份、复合酶15份、南天竹7份、雪松针7份、菱壳4份、野八角叶4份、木麻黄4份、木棉根1份、毛茉莉1份、素方花0.8份、愈疮木0.8份和辣木籽0.4份;
(4)、播种育苗
准备育苗棚,铺设步骤(3)得到的育苗基质,厚度为10cm,将催芽后的西瓜种子均匀播撒在育苗基质中,每亩播种4kg,播种后立即浇透水,然后用细土覆盖,细土的厚度为1cm,然后再覆盖一层地膜,直到西瓜幼苗出土,破膜放苗;
(5)、苗期管理
幼苗出土后,每隔1天喷施一次营养液,保持育苗棚内的温度为28℃、相对湿度为75%,光照12h,光照强度为400Lux;
每隔4天根部浇水一次、每隔1天叶面喷水一次、每隔10天根施水肥一次,直至移栽。
其中,
所述步骤(2)的浸种液包括以下份计的原料:赤霉素0.1g/L、壳聚糖0.1g/L、乙烯利0.08g/L、维生素C 0.08g/L、0.1%硝酸钾0.06g/L、吲哚丁酸钾0.06g/L、多菌灵0.04g/L、牛磺酸0.04g/L、维生素D 0.02g/L、维生素E 0.02g/L、硫酸亚铁0.02g/L、硼砂0.01g/L和余量为水,将各组分分别溶解于水后混合,充分搅拌均匀即得。
所述步骤(3)的药土的制备方法为:将南天竹、雪松针、菱壳、野八角叶、木麻黄、木棉根、毛茉莉、素方花、愈疮木和辣木籽混合粉碎,过100目筛,得到中药粉末;然后加入3倍重量份的水,在57℃条件下浸泡1h,降温至37℃,得到中药浸泡料;向中药浸泡料中加入复合酶,在45℃条件下,搅拌酶解1h后煮沸15min,固液分离得到中药渣;将中药渣与膨润土混合均匀,得到所述药土。
所述步骤(3)的复合酶包括以下份计的原料:纤维素酶7份、果胶酶4份和淀粉酶1份。
所述步骤(3)的营养土包括以下份计的原料:田园土55份、膨胀珍珠岩45份、松针粉24份、菇渣24份、玉米秸秆14份、ABT生根粉14份、白沙泥14份、草木灰9份、酒糟9份、甘蔗渣9份、螃蟹壳5份、腐殖土5份、糖蜜发酵液4份、芝麻4份、锯末4份和水45份。
所述步骤(5)的营养液包括以下份计的原料:硼酸0.01g/L、硫酸锌0.008g/L、硫酸铜0.006g/L、硫酸锰0.006g/L、硫酸铁0.006g/L、过磷酸钙0.004g/L、硝酸钙0.004g/L、硝酸钾0.001g/L和余量水。
所述步骤(5)的水肥包括以下份计的原料:米糠45份、蜂蜜35份、贝壳粉24份、草木灰24份、尿素24份、蓖麻叶粉14份、番茄红素14份、葡萄糖14份、腐殖酸9份、氨基酸9份、磷酸二氢钾7份、硼酸4份、硫酸镁4份、萘乙酸1份和水99份。
所述步骤(5)的西瓜苗出土后,每天用紫外线灯对西瓜苗进行照射,照射时间为2h。
实施例2
一种提高发芽率的西瓜种子实生苗培育方法,包括如下步骤:
(1)、种子预处理
选择颗粒饱满的西瓜种子,筛选除去瘪粒及破损粒,采用喷淋的方式用清水将西瓜种子喷湿,25min后,用细沙子按1.5:1的体积比例与西瓜种子混合,并搓揉,然后再用清水先淘洗后冲洗,从而去除种皮上的粘液;
将种子置于通风处晾晒4h后,在74℃条件下微波干燥处理3min,得到预处理后的种子,备用;
(2)、浸种催芽
准备浸种液,将步骤(1)得到的种子放入浸种液中,在55℃条件下浸泡45min,捞出洗净;
准备催芽箱,在催芽箱中设置紫外灯、并在箱底铺设一层厚度为4cm的细沙,将种子埋入细沙中,并将前述浸种液与清水按照1:3比例混合得到兑水后的浸种液,喷洒细沙,保持细沙湿润,待90%以上种子露白后,准备播种;
(3)、准备育苗基质
将营养土和药土按照8:1的比例混合搅拌均匀,得到育苗基质;
所述药土包括以下份计的原料:膨润土55份、复合酶25份、南天竹9份、雪松针9份、菱壳6份、野八角叶6份、木麻黄6份、木棉根3份、毛茉莉3份、素方花1.2份、愈疮木1.2份和辣木籽0.6份;
(4)、播种育苗
准备育苗棚,铺设步骤(3)得到的育苗基质,厚度为15cm,将催芽后的西瓜种子均匀播撒在育苗基质中,每亩播种4.5kg,播种后立即浇透水,然后用细土覆盖,细土的厚度为2cm,然后再覆盖一层地膜,直到西瓜幼苗出土,破膜放苗;
(5)、苗期管理
幼苗出土后,每隔1~2天喷施一次营养液,保持育苗棚内的温度为29℃、相对湿度为80%,光照14h,光照强度为500Lux;
每隔4天根部浇水一次、每隔2天叶面喷水一次、每隔10天根施水肥一次,直至移栽。
其中,
步骤(2)的浸种液包括以下份计的原料:赤霉素0.3g/L、壳聚糖0.3g/L、乙烯利0.1g/L、维生素C 0.1g/L、0.2%硝酸钾0.08g/L、吲哚丁酸钾0.08g/L、多菌灵0.06g/L、牛磺酸0.06g/L、维生素D 0.04g/L、维生素E 0.04g/L、硫酸亚铁0.04g/L、硼砂0.03g/L和余量为水,将各组分分别溶解于水后混合,充分搅拌均匀即得。
步骤(3)的药土的制备方法为:将南天竹、雪松针、菱壳、野八角叶、木麻黄、木棉根、毛茉莉、素方花、愈疮木和辣木籽混合粉碎,过200目筛,得到中药粉末;然后加入5倍重量份的水,在57℃条件下浸泡2h,降温至37℃,得到中药浸泡料;向中药浸泡料中加入复合酶,在55℃条件下,搅拌酶解2h后煮沸20min,固液分离得到中药渣;将中药渣与膨润土混合均匀,得到所述药土。
步骤(3)的复合酶包括以下份计的原料:纤维素酶9份、果胶酶6份和淀粉酶3份。
步骤(3)的营养土包括以下份计的原料:田园土65份、膨胀珍珠岩55份、松针粉26份、菇渣26份、玉米秸秆16份、ABT生根粉16份、白沙泥16份、草木灰11份、酒糟11份、甘蔗渣11份、螃蟹壳7份、腐殖土7份、糖蜜发酵液6份、芝麻6份、锯末6份和水55份。
步骤(5)的营养液包括以下份计的原料:硼酸0.03g/L、硫酸锌0.01g/L、硫酸铜0.008g/L、硫酸锰0.008g/L、硫酸铁0.008g/L、过磷酸钙0.006g/L、硝酸钙0.006g/L、硝酸钾0.003g/L和余量水。
步骤(5)的水肥包括以下份计的原料:米糠55份、蜂蜜40份、贝壳粉26份、草木灰26份、尿素26份、蓖麻叶粉16份、番茄红素16份、葡萄糖16份、腐殖酸11份、氨基酸11份、磷酸二氢钾9份、硼酸6份、硫酸镁6份、萘乙酸3份和水102份。
步骤(5)的西瓜苗出土后,每天用紫外线灯对西瓜苗进行照射,照射时间为5h。
实施例3
一种提高发芽率的西瓜种子实生苗培育方法,包括如下步骤:
(1)、种子预处理
选择颗粒饱满的西瓜种子,筛选除去瘪粒及破损粒,采用喷淋的方式用清水将西瓜种子喷湿,20min后,用细沙子按1.5:1的体积比例与西瓜种子混合,并搓揉,然后再用清水先淘洗后冲洗,从而去除种皮上的粘液;
将种子置于通风处晾晒3h后,在73℃条件下微波干燥处理3min,得到预处理后的种子,备用;
(2)、浸种催芽
准备浸种液,将步骤(1)得到的种子放入浸种液中,在52℃条件下浸泡35min,捞出洗净;
准备催芽箱,在催芽箱中设置紫外灯、并在箱底铺设一层厚度为4cm的细沙,将种子埋入细沙中,并将前述浸种液与清水按照1:3比例混合得到兑水后的浸种液,喷洒细沙,保持细沙湿润,待90%以上种子露白后,准备播种;
(3)、准备育苗基质
将营养土和药土按照7:1的比例混合搅拌均匀,得到育苗基质;
所述药土包括以下份计的原料:膨润土50份、复合酶20份、南天竹8份、雪松针8份、菱壳5份、野八角叶5份、木麻黄5份、木棉根2份、毛茉莉2份、素方花1份、愈疮木1份和辣木籽0.5份;
(4)、播种育苗
准备育苗棚,铺设步骤(3)得到的育苗基质,厚度为12cm,将催芽后的西瓜种子均匀播撒在育苗基质中,每亩播种4.5kg,播种后立即浇透水,然后用细土覆盖,细土的厚度为2cm,然后再覆盖一层地膜,直到西瓜幼苗出土,破膜放苗;
(5)、苗期管理
幼苗出土后,每隔1~2天喷施一次营养液,保持育苗棚内的温度为28℃、相对湿度为78%,光照13h,光照强度为450Lux;
每隔4天根部浇水一次、每隔1天叶面喷水一次、每隔10天根施水肥一次,直至移栽。
其中,
步骤(2)的浸种液包括以下份计的原料:赤霉素0.2g/L、壳聚糖0.2g/L、乙烯利0.09g/L、维生素C 0.09g/L、0.1%硝酸钾0.07g/L、吲哚丁酸钾0.07g/L、多菌灵0.05g/L、牛磺酸0.05g/L、维生素D 0.03g/L、维生素E 0.03g/L、硫酸亚铁0.03g/L、硼砂0.02g/L和余量为水,将各组分分别溶解于水后混合,充分搅拌均匀即得。
步骤(3)的药土的制备方法为:将南天竹、雪松针、菱壳、野八角叶、木麻黄、木棉根、毛茉莉、素方花、愈疮木和辣木籽混合粉碎,过150目筛,得到中药粉末;然后加入4倍重量份的水,在57℃条件下浸泡1.5h,降温至37℃,得到中药浸泡料;向中药浸泡料中加入复合酶,在50℃条件下,搅拌酶解1.5h后煮沸18min,固液分离得到中药渣;将中药渣与膨润土混合均匀,得到所述药土。
步骤(3)的复合酶包括以下份计的原料:纤维素酶8份、果胶酶5份和淀粉酶2份。
步骤(3)的营养土包括以下份计的原料:田园土60份、膨胀珍珠岩50份、松针粉25份、菇渣25份、玉米秸秆15份、ABT生根粉15份、白沙泥15份、草木灰10份、酒糟10份、甘蔗渣10份、螃蟹壳6份、腐殖土6份、糖蜜发酵液5份、芝麻5份、锯末5份和水50份。
步骤(5)的营养液包括以下份计的原料:硼酸0.02g/L、硫酸锌0.009g/L、硫酸铜0.007g/L、硫酸锰0.007g/L、硫酸铁0.007g/L、过磷酸钙0.005g/L、硝酸钙0.005g/L、硝酸钾0.002g/L和余量水。
步骤(5)的水肥包括以下份计的原料:米糠50份、蜂蜜37份、贝壳粉25份、草木灰25份、尿素25份、蓖麻叶粉15份、番茄红素15份、葡萄糖15份、腐殖酸10份、氨基酸10份、磷酸二氢钾8份、硼酸5份、硫酸镁5份、萘乙酸2份和水100份。
步骤(5)的西瓜苗出土后,每天用紫外线灯对西瓜苗进行照射,照射时间为4h。
对比例
育苗地点:安徽省明光市西瓜种植基地;
育苗品种:“小天使”西瓜品种;
对比方法:从同一批“小天使”西瓜种子中挑选1250粒,随机平均分成4组,每组250粒,将4组种子分别采用实施例1~3、对比例1和对比例2进行育苗,其中:
对比例1:对比例1与实施例1相比,仅使用普通育苗基质,除此外的方法步骤均相同;
对比例2:采用普通育苗方法进行育苗;
观察并记录育苗情况,得到如下表1所示的数据:
其中,叶绿素含量采用丙酮乙醇混合液提取法测定;根系活力采用氯化三苯基四氮唑法测定。由表1数据可知:
(1)、本发明的播种育苗方法,采用的实施例1相对比未使用本发明育苗基质的对比例1,出苗率提高了2.8%,叶绿素含量平均提高了0.5mg·g-1FW,根系活力提高了6ugg-1·h-1,育苗成活率提高了3.2%,平均出苗时间缩短了接近19h;
(2)、本发明的播种育苗方法,采用的实施例2相对比采用普通育苗方法的对比例2,出苗率提高了12%,叶绿素含量平均提高了1.2mg·g-1FW,根系活力提高了9ug g-1·h-1,育苗成活率提高了14.4%,平均出苗时间缩短了近3天;
综上所述,本发明的育苗方法,缩短了育苗周期,提高了种子发芽率和实生苗成活率,壮苗指数高,根系发达、瓜藤繁茂。
参照前述实施例对本发明进行了详细的说明,对于本领域的技术人员来说,其依然可以对前述各实施例所记载的技术方案进行修改,或者对其中部分技术特征进行等同替换。凡在本发明的精神和原则之内,所作的任何修改、等同替换、改进等,均应包含在本发明的保护范围之内。

Claims (8)

1.一种提高发芽率的西瓜种子实生苗培育方法,其特征在于,包括如下步骤:
(1)、种子预处理
选择颗粒饱满的西瓜种子,筛选除去瘪粒及破损粒,采用喷淋的方式用清水将西瓜种子喷湿,15~25min后,用细沙子按1.5:1的体积比例与西瓜种子混合,并搓揉,然后再用清水先淘洗后冲洗,从而去除种皮上的粘液;
将种子置于通风处晾晒2~4h后,在72~74℃条件下微波干燥处理2~3min,得到预处理后的种子,备用;
(2)、浸种催芽
准备浸种液,将步骤(1)得到的种子放入浸种液中,在50~55℃条件下浸泡30~45min,捞出洗净;
准备催芽箱,在催芽箱中设置紫外灯、并在箱底铺设一层厚度为3~4cm的细沙,将种子埋入细沙中,并将前述浸种液与清水按照1:2~3比例混合得到兑水后的浸种液,喷洒细沙,保持细沙湿润,待90%以上种子露白后,准备播种;
(3)、准备育苗基质
将营养土和药土按照5~8:1的比例混合搅拌均匀,得到育苗基质;
所述药土包括以下份计的原料:膨润土45~55份、复合酶15~25份、南天竹7~9份、雪松针7~9份、菱壳4~6份、野八角叶4~6份、木麻黄4~6份、木棉根1~3份、毛茉莉1~3份、素方花0.8~1.2份、愈疮木0.8~1.2份和辣木籽0.4~0.6份;
(4)、播种育苗
准备育苗棚,铺设步骤(3)得到的育苗基质,厚度为10~15cm,将催芽后的西瓜种子均匀播撒在育苗基质中,每亩播种4~4.5kg,播种后立即浇透水,然后用细土覆盖,细土的厚度为1~2cm,然后再覆盖一层地膜,直到西瓜幼苗出土,破膜放苗;
(5)、苗期管理
幼苗出土后,每隔1~2天喷施一次营养液,保持育苗棚内的温度为28~29℃、相对湿度为75~80%,光照12~14h,光照强度为400~500Lux;
每隔4天根部浇水一次、每隔1~2天叶面喷水一次、每隔10天根施水肥一次,直至移栽。
2.根据权利要求1所述的提高发芽率的西瓜种子实生苗培育方法,其特征在于,所述步骤(2)的浸种液包括以下份计的原料:赤霉素0.1~0.3g/L、壳聚糖0.1~0.3g/L、乙烯利0.08~0.1g/L、维生素C 0.08~0.1g/L、0.1%-0.2%硝酸钾0.06~0.08g/L、吲哚丁酸钾0.06~0.08g/L、多菌灵0.04~0.06g/L、牛磺酸0.04~0.06g/L、维生素D 0.02~0.04g/L、维生素E 0.02~0.04g/L、硫酸亚铁0.02~0.04g/L、硼砂0.01~0.03g/L和余量为水,将各组分分别溶解于水后混合,充分搅拌均匀即得。
3.根据权利要求1所述的提高发芽率的西瓜种子实生苗培育方法,其特征在于,所述步骤(3)的药土的制备方法为:将南天竹、雪松针、菱壳、野八角叶、木麻黄、木棉根、毛茉莉、素方花、愈疮木和辣木籽混合粉碎,过100~200目筛,得到中药粉末;然后加入3~5倍重量份的水,在57℃条件下浸泡1~2h,降温至37℃,得到中药浸泡料;向中药浸泡料中加入复合酶,在45~55℃条件下,搅拌酶解1~2h后煮沸15~20min,固液分离得到中药渣;将中药渣与膨润土混合均匀,得到所述药土。
4.根据权利要求1所述的提高发芽率的西瓜种子实生苗培育方法,其特征在于,所述步骤(3)的复合酶包括以下份计的原料:纤维素酶7~9份、果胶酶4~6份和淀粉酶1~3份。
5.根据权利要求1所述的提高发芽率的西瓜种子实生苗培育方法,其特征在于,所述步骤(3)的营养土包括以下份计的原料:田园土55~65份、膨胀珍珠岩45~55份、松针粉24~26份、菇渣24~26份、玉米秸秆14~16份、ABT生根粉14~16份、白沙泥14~16份、草木灰9~11份、酒糟9~11份、甘蔗渣9~11份、螃蟹壳5~7份、腐殖土5~7份、糖蜜发酵液4~6份、芝麻4~6份、锯末4~6份和水45~55份。
6.根据权利要求1所述的提高发芽率的西瓜种子实生苗培育方法,其特征在于,所述步骤(5)的营养液包括以下份计的原料:硼酸0.01~0.03g/L、硫酸锌0.008~0.01g/L、硫酸铜0.006~0.008g/L、硫酸锰0.006~0.008g/L、硫酸铁0.006~0.008g/L、过磷酸钙0.004~0.006g/L、硝酸钙0.004~0.006g/L、硝酸钾0.001~0.003g/L和余量水。
7.根据权利要求1所述的提高发芽率的西瓜种子实生苗培育方法,其特征在于,所述步骤(5)的水肥包括以下份计的原料:米糠45~55份、蜂蜜35~40份、贝壳粉24~26份、草木灰24~26份、尿素24~26份、蓖麻叶粉14~16份、番茄红素14~16份、葡萄糖14~16份、腐殖酸9~11份、氨基酸9~11份、磷酸二氢钾7~9份、硼酸4~6份、硫酸镁4~6份、萘乙酸1~3份和水99~102份。
8.根据权利要求1所述的提高发芽率的西瓜种子实生苗培育方法,其特征在于,所述步骤(5)的西瓜苗出土后,每天用紫外线灯对西瓜苗进行照射,照射时间为2~5h。
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