CN106818875B - 果树根腐病防治药剂及方法 - Google Patents

果树根腐病防治药剂及方法 Download PDF

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CN106818875B
CN106818875B CN201611254516.4A CN201611254516A CN106818875B CN 106818875 B CN106818875 B CN 106818875B CN 201611254516 A CN201611254516 A CN 201611254516A CN 106818875 B CN106818875 B CN 106818875B
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张爱中
李祥剑
景鑫鑫
朱亚军
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Henan Zhongwei Chunyu Plant Nutrition Co ltd
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Prestige High-Tech Chemical Industry Co Ltd In Henan
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Abstract

本发明涉及一种果树根腐病防治药剂,旨在解决果树根腐病难以防治的技术难题,其由以下重量百分比的原料制成:腐植酸3~10%、大量元素10~50%、植物生长调节剂0.3~1.5%、杀菌剂0.5~1%,余量为水。本发明还公开了果树根腐病防治方法,主要包括以下步骤:(1)于秋季环施生物有机肥;(2)于第二年春季萌芽前,在距离树冠投影线20~30cm范围内用上述果树根腐病防治药剂进行药剂灌根;(3)若发现果树患上根腐病后,在距离树冠投影线30~40cm范围内用上述果树根腐病防治药剂进行药剂灌根。本发明能够做到防治结合,对果树和土壤进行双重治理,且药剂中杀菌与营养相结合,效果相互促进,防治效果显著。

Description

果树根腐病防治药剂及方法
技术领域
本发明属于植物保护技术领域,具体涉及一种果树根腐病防治药剂及方法。
背景技术
根腐病是危害苹果、梨、桃、葡萄等果树的一种毁灭性病害。由于近些年来部分果农施肥不够科学合理,致使土壤中过多的磷元素不能被果树吸收利用,还对氮元素产生一定的拮抗作用,使土壤板结加重,通透性遭到破坏,导致果树抗病能力大幅度下降。加上部分果农过量使用极易引起烧根现象的碳酸氢铵和未经发酵腐熟的人畜粪便、秸秆等,也都加剧了根腐病的大量发生。
果树根腐病主要有真菌引起的紫纹羽、白纹羽、根朽病、白绢病和圆斑根腐病五种和细菌引起的根瘤病和毛根病。发病以老果园,滩地或土质黏重、排水不良的果园,干旱缺肥、土壤板结、水肥易流失、大小年现象严重以及管理粗放的果园为重点。另外,其他病虫危害重的果园,根腐病发生也严重。该病主要危害根部,首先是从个别支根和须根开始出现病变,并逐渐向主根扩展,随着时间的推移根部腐烂程度加剧,根部吸收水分和养分的功能逐渐减弱,地上养分不足,表现为萎蔫、青干、焦枯。根腐病对于果树特别是苹果、梨、桃树等树木的危害极大,果树一旦患此病后,轻则侧枝枯死、生长衰弱(俗称小老头树),重则整株死亡。
目前,多通过加强果园管理、隔离与土壤消毒、药剂灌根等措施进行根腐病防治,例如,加强果园管理包括:(1)增施有机肥,避免偏施氮肥;(2)地势低洼,土壤粘重和地下水位高的果园要注意排水;(3)科学修剪,合理负载,使树冠通风透光,防止大小年现象,保持树势健壮;(4)防治其他病虫害,防止日灼和冻害;但该措施仅可预防或降低根腐病的发生,并不能对发病植株进行治疗。隔离和土壤消毒的办法用来防治已经发生病害的果树,包括:(1)隔离:在病区周围挖1m以上的深沟,防止病菌蔓延;(2)土壤消毒:土壤消毒时间以早春、夏末病菌开始活动时为宜,以树干为中心挖3~5条辐射沟,深度视主根深度而定,约80cm,将药剂均匀散布土中,可用石硫合剂、代森铵等;但该措施使用不慎易造成严重药害,如施用硫酸铜、代森铵等造成果树大量落叶,且施用方法较麻烦。在发病期可用代森锰锌、敌磺钠、甲基托布津、百菌清等杀菌剂灌根,但其治疗效果不彻底,后期易复发,且防治后果实品质下降,有些药物毒性强,残毒时间长,果农操作过程中稍有不慎会对人体造成危害。
发明内容
针对上述问题,本发明提供了一种果树根腐病防治药剂及方法,能够做到防治结合,对果树和土壤进行双重治理,且药剂中杀菌与营养相结合,效果相互促进,防治效果显著。
为解决以上技术问题,本发明通过以下技术方案实现:
设计一种果树根腐病防治药剂,由以下重量百分比的原料制成:腐植酸3~10%、大量元素10~50%、植物生长调节剂0.3~1.5%、杀菌剂0.5~1%,余量为水。
所述腐植酸优选为腐植酸钠、腐植酸钾、腐植酸铵中的至少一种,能改善土壤物理、化学性质,形成团粒结构,便于通气,有利于根系生长发育的微环境的形成,从而促进新生根系对营养物质的吸收、运转。
所述大量元素优选为氮肥、磷肥、钾肥中的至少二种混合,氮肥源自尿素、硝酸铵、硫酸铵、氯化铵、磷酸一铵和磷酸二铵中的至少一种;磷肥取自磷酸二氢钾、过磷酸钙、磷酸一铵、磷酸二铵和钙镁磷肥中的至少一种;钾肥源自硫酸钾、磷酸二氢钾、硝酸钾和氯化钾中的至少一种;大量元素除了提供果树生长所必需的营养之外,还具有以下作用;氮:延缓和防止果树器官衰老;磷:促进根系下扎,提高果树抗逆能力;钾:促进光合作用,增强果树抗病性,提高细胞木质化程度,阻止或减少病原菌的入侵,延长水果储存期,使水果的色泽更鲜艳,改善汁液含糖量和酸度。
所述植物生长调节剂优选为萘乙酸及其钠盐、吲哚丁酸及其钾盐、芸苔素内酯、复硝酚钠、胺鲜酯、三十烷醇中的至少一种。其中的三十烷醇能促进果树发根,提高叶绿素含量,增强光合作用和同化作用,与其它营养组分配合能增强果树抗逆性,改善品质。
所述杀菌剂优选为乙蒜素、噁霉灵、中生菌素、辛菌胺、申嗪霉素中的至少一种。
设计一种果树根腐病的防治方法,包括果树生长期内循环进行以下步骤:
(1)于秋季对果树环施生物有机肥,所述生物有机肥中氮(以N计)、磷(以P2O5计)、钾(以K2O计)总重≥5wt%,有机质≥45wt%,有效活菌数≥0.2亿/克,菌种包括地衣芽孢杆菌、胶冻样芽孢杆菌、枯草芽孢杆菌、解淀粉芽孢杆菌中的至少两种,不同菌种之间的有效活菌数大致相等,亦可选购市场上同类产品,如可选用河南芭中现代农业有限公司生产的微生物肥(2014)准字(1389)号生物有机肥或河北巨微生物工程有限公司生产的微生物肥(2012)准字(0942)号生物有机肥;
所述生物有机肥制备方法如下:采用有机固体废物(包括有机垃圾、秸秆、牛羊粪便、饼粕、农副产品和食品加工产生的固体废物)经晒干或风干、粉碎、过筛后按照比例与市售微生物菌剂、水分混合,进行人工或机械发酵,在60~70摄氏度下持续发酵至完全腐熟,每隔1~2天翻堆一次,完全腐熟后,按照标准添加大量元素氮、磷、钾肥及微量元素锌、锰、铁、硼肥混合均匀制成。
所述生物有机肥,可调理果园土壤,激活土壤中微生物活跃率,提高土壤微生物群落功能多样性,使土壤保持健康的微生物生态平衡;疏松果园土壤,克服土壤板结,增加土壤空气通透性;增强作物抗病性和抗逆性,降低发病率。为果树生长提供优良的土壤环境。
(2)于第二年春季果树萌芽前,在距离果树树冠对应的投影线(树冠垂直于地面的投影线)20~30cm范围内用上述果树根腐病防治药剂(稀释1000~1500倍)进行药剂灌根,灌根深度20~30cm,灌根点(1~1.5cm)为均布的8~10个,灌根药剂量以土壤表层有浸出液为准(优选的,灌根点在树冠投影线的内外交错布置,更优选的,相邻两个灌根点在树冠投影线的内外交错布置);
(3)若发现有果树患上根腐病后,在距离果树树冠对应的投影线30~40cm范围内用上述果树根腐病防治药剂(稀释800~1000倍)进行药剂灌根,灌根深度20~30cm,灌根点(1~1.5cm)为均布的10~16个,灌根药剂量以土壤表层有浸出液为准(优选的,灌根点在树冠投影线的内外交错布置,更优选的,每隔3个灌根点布置在树冠投影线外部,会有1个灌根点布置在树冠投影线内部)。
本发明具有以下积极有益技术效果:
(1)本发明防治药剂各组成分配合增效,相互无拮抗或抑制作用,施用于果树能兼顾预防和治疗,使二者成为有机结合的整体:前期增强树势,提高果树抗病性,改善果树生长,提高果实品质;后期有效地控制和改善果树根腐病的发生与传播,同时能够有效促进果树根系发育和生长,改善根系的吸收肥水能力。
(2)本发明防治方法能兼顾土壤和果树,进行双重治理:生物有机肥可疏松果园土壤,提高土壤微生物群落功能多样性,使土壤保持健康的微生物生态平衡,为果树生长提供优良的土壤环境;药剂中杀菌与营养相结合,效果相互促进,防治效果显著,持效期长且不复发。对果树根腐病的防治效率高达87%,且后期不易复发。
(3)本发明所用施肥方法简单、易操作、省工省时:采用施肥枪进行药剂灌根,施用简单、易操作,可防止因挖坑造成的病菌感染范围扩大;药剂含营养与杀菌成分,一次施用双重效果,省工省时。
(4)环境污染少:药剂选取的原料属于环境友好型,均为低毒性,对土壤、作物无毒害,对生产和使用者安全,且便宜易得。
附图说明
图1为本发明春季萌芽前的灌根点分布图;
图2为本发明发现果树患病后的灌根点分布图。
具体实施方式
以下结合具体实施例对本发明的技术方案作进一步说明,但本发明的保护范围不限于此。以下各实施例中所用原料,如无特别说明,则均为市售。
实施例1
一种果树根腐病的防治方法,包括果树生长期内循环进行以下步骤:
(1)于秋季对果树环施生物有机肥,所述生物有机肥为河南芭中现代农业有限公司生产的微生物肥(2014)准字(1389)号生物有机肥;
(2)于第二年春季果树萌芽前,在距离果树树冠对应的投影线(树冠垂直于地面的投影线)20cm用果树根腐病防治药剂稀释1000倍进行药剂灌根,灌根深度20~30cm,直径1~1.5cm,灌根点为均布的8个,灌根药剂量以土壤表层有浸出液为准,相邻两个灌根点在树冠投影线的内外交错布置,见图1;
(3)若发现有果树患上根腐病后,在距离其树冠对应的投影线30cm范围内用果树根腐病防治药剂稀释800倍进行药剂灌根,灌根深度20~30cm,直径1~1.5cm,灌根点为均布的16个,灌根药剂量以土壤表层有浸出液为准,灌根点在树冠投影线的内外交错布置,每隔3个灌根点布置在树冠投影线外部,会有1个灌根点布置在树冠投影线内部,见图2。
所述果树根腐病防治药剂采用以下重量百分比的原料混合均匀制备而成:腐植酸钠6%、硝酸钾13%、磷酸二铵11%、胺鲜酯0.8%、乙蒜素0.5%、噁霉灵0.4%、水68.3%。
所选用的乙蒜素能与菌体内含硫基的物质作用,干扰菌体细胞壁几丁质的合成,有效地抑制真菌、细菌菌体的正常代谢,从而达到防病的作用,是高效无公害广谱仿生杀菌剂;还能促进萌芽、提高发芽率、增加产量和改善品质。噁霉灵能有效抑制病原真菌菌丝体的正常生长或直接杀死病菌,又能促进植物生长;并具有促进作物根系生长发育、生根壮苗,提高农作物的成活率。以上两种杀菌剂作用机理不同,配合增效作用效果显著。所选胺鲜酯能提高光合作用速率,提高果树碳、氮的代谢,与其它营养成分配合,能增强果树对水肥的吸收,改善果实品质。
实施例2
一种果树根腐病的防治方法,包括果树生长期内循环进行以下步骤:
(1)于秋季对果树环施生物有机肥,所述生物有机肥为河北巨微生物工程有限公司生产的微生物肥(2012)准字(0942)号生物有机肥;
(2)于第二年春季果树萌芽前,在距离果树树冠对应的投影线(树冠垂直于地面的投影线)30cm范围内用上述果树根腐病防治药剂稀释1500倍进行药剂灌根,灌根深度20~30cm,直径1~1.5cm,灌根点为均布的10个,灌根药剂量以土壤表层有浸出液为准,相邻两个灌根点在树冠投影线的内外交错布置;
(3)若发现有果树患上根腐病后,在距离其树冠对应的投影线40cm范围内用上述果树根腐病防治药剂稀释1000倍进行药剂灌根,灌根深度20~30cm,直径1~1.5cm,灌根点为均布的12个,灌根药剂量以土壤表层有浸出液为准,灌根点在树冠投影线的内外交错布置,每隔3个灌根点布置在树冠投影线外部,会有1个灌根点布置在树冠投影线内部。
所述果树根腐病防治药剂采用以下重量百分比的原料混合均匀制备而成:腐植酸钾5%、尿素20%、磷酸二氢钾5%、复硝酚钠0.4%、吲哚丁酸钾0.1%、中生菌素0.4%、辛菌胺0.3%、水68.8%。
所选用萘乙酸及其钠盐能促进不定根和根的生成,还能有效提高果树抗涝、抗病等抗逆能力;吲哚丁酸及其钾盐:可诱导根原体的形成,促进细胞分化和***,有利于新根生长和维管束***的分化,促进不定根的形成;复硝酚钠:促进原生质流动,加速果树对营养物质的吸收,提高养分利用率,促进根系生长,增强果树抗病虫害的能力;以上两种调节剂适宜配比组合使用,增效作用显著。
所选用的中生菌素是通过微生物发酵生产的一种新型农用抗生素,其杀菌谱广,对农作物的细菌及真菌性病害均具有良好的防治效果,同时还可提高植株的抗病性;通过抑制菌体蛋白质合成过程中的肽键形成而起到防治细菌病害的作用;对真菌孢子萌发有强烈的抑制作用,引起菌丝细胞内原生质凝聚,改变丝状菌丝的形态;对环境没有污染,对人畜没有毒害。辛菌胺为环保型氨基酸类高分子聚合物杀菌剂,对导致作物病害的多种植物真菌、细菌和病毒均有显著的杀灭和抑制作用,可破坏病菌的细胞膜,抑制呼吸***,凝固蛋白质,使酶变性而产生抑菌和杀菌作用,长期使用不产生抗性。以上两种能够配合增效,作用效果显著。
该防治药剂按照上述方法在一般果园上应用后,防治效果达到97.3%以上。
实施例3
一种果树根腐病的防治方法,包括果树生长期内循环进行以下步骤:
(1)于秋季对果树环施生物有机肥,所述生物有机肥为河北巨微生物工程有限公司生产的微生物肥(2012)准字(0942)号生物有机肥;
(2)于第二年春季果树萌芽前,在距离果树树冠对应的投影线(树冠垂直于地面的投影线)25cm范围内用上述果树根腐病防治药剂稀释1200倍进行药剂灌根,灌根深度20~30cm,直径1~1.5cm,灌根点为均布的9个,灌根药剂量以土壤表层有浸出液为准,灌根点在树冠投影线的内外交错布置;
(3)若发现有果树患上根腐病后,在距离其树冠对应的投影线35cm范围内用上述果树根腐病防治药剂稀释900倍进行药剂灌根,灌根深度20~30cm,直径1~1.5cm,灌根点为均布的12个,灌根药剂量以土壤表层有浸出液为准,灌根点在树冠投影线的内外交错布置,每隔2个灌根点布置在树冠投影线外部,会有1个灌根点布置在树冠投影线内部。
所述果树根腐病防治药剂采用以下重量百分比的原料混合均匀制备而成:腐植酸铵8%、磷酸二铵12%、氯化钾11%、芸苔素内酯1.2%、申嗪霉素0.8%,水67%。
所用芸苔素内酯对根系生长有明显的促进作用,可以辅助作物劣势部分良好生长,抗多种病毒、细菌、真菌的危害,与其营养成分配合作用,能大大增强作物的抗病能力。
所用申嗪霉素是由荧光假单胞菌经生物培养分泌的一种新型微生物源绿色农药,同时具有广谱抑制植物病原菌并促进植物生长作用的双重功能,该生物杀菌剂具有广谱、高效的特点。
该防治药剂按照上述方法在一般果园上应用后,防治效果达到96.7%以上。
实施例4
田间试验。试验选在河南省三门峡灵宝市西闫乡进行,选择树龄8~10年的果树40棵,平均树龄9年,该地块由于受长期追施复合肥和管理不当等因素影响造成果树根腐病接连发生,病程2~5年,平均病程3年。40棵树中,20棵苹果树,20棵桃树,以本发明实施例1的果树根腐病防治方法与常规施肥(复合肥+有机肥+杀菌剂)在果树发病情况相同、果树数目相同的情况下果树的生长情况进行对比(试验数据处理及统计按常规方法进行),见下表:
表1 本发明防治方法与常规施肥法防治根腐病效果对比
Figure 817379DEST_PATH_IMAGE001
由表1 可见,采用本发明方法防治果树根腐病效果明显高于常规方法。连续采用本发明方法防治根腐病效果显著,且表现优质、速效,康复后的果树树势长势健壮,无复发现象;而常规处理虽也能起到一定的防治作用,但防治效果不及本发明方法,且在第2年有复发现象。因此,可以表明本发明对防治果树根腐病具有显著的效果。
上面结合实施例对本发明作了详细的说明,但是,所属技术领域的技术人员能够理解,在不脱离本发明宗旨的前提下,还可以对上述实施例中的各个具体参数进行变更,形成多个具体的实施例,均为本发明的常见变化范围,在此不再一一详述。

Claims (5)

1.一种果树根腐病防治方法,包括果树生长期内循环进行以下步骤:
(1)于秋季对果树环施生物有机肥,所述生物有机肥中氮、磷、钾总重≥5wt%,有机质≥45wt%,有效活菌数≥0.2亿/克,菌种包括地衣芽孢杆菌、胶冻样芽孢杆菌、枯草芽孢杆菌、解淀粉芽孢杆菌中的至少两种,不同菌种之间的有效活菌数相等;
(2)于第二年春季果树萌芽前,在距离果树树冠对应的投影线20~30cm范围内施用果树根腐病防治药剂,将其稀释1000~1500倍后进行药剂灌根,灌根深度20~30cm,灌根点为均布的8~10个,灌根药剂量以土壤表层有浸出液为准;
(3)若发现有果树患上根腐病后,在距离其树冠对应的投影线30~40cm范围内施用果树根腐病防治药剂,将其稀释800~1000倍后进行药剂灌根,灌根深度20~30cm,灌根点为均布的10~16个,灌根药剂量以土壤表层有浸出液为准;
所述果树根腐病防治药剂由以下重量百分比的原料制成:腐植酸3~10%、大量元素10~50%、植物生长调节剂0.3~1.5%、杀菌剂0.5~1%,余量为水,所述腐植酸为腐植酸钠、腐植酸钾、腐植酸铵中的至少一种;所述植物生长调节剂为萘乙酸及其钠盐、吲哚丁酸及其钾盐、芸苔素内酯、复硝酚钠、胺鲜酯、三十烷醇中的至少一种;所述杀菌剂为乙蒜素、噁霉灵、中生菌素、辛菌胺、申嗪霉素中的至少一种;所述大量元素为氮肥、磷肥、钾肥中的至少二种混合,氮肥源自尿素、硝酸铵、硫酸铵、氯化铵、磷酸一铵和磷酸二铵中的至少一种,磷肥取自磷酸二氢钾、过磷酸钙、磷酸一铵、磷酸二铵和钙镁磷肥中的至少一种,钾肥源自硫酸钾、磷酸二氢钾、硝酸钾和氯化钾中的至少一种。
2.根据权利要求1所述的果树根腐病防治方法,其特征在于:在步骤(2)、(3)中所述灌根点的直径为1~1.5cm。
3.根据权利要求1所述的果树根腐病防治方法,其特征在于:在步骤(2)、(3)中所述灌根点在树冠投影线的内外交错布置。
4.根据权利要求1所述的果树根腐病防治方法,其特征在于:在步骤(2)中,相邻两个灌根点在树冠投影线的内外交错布置。
5.根据权利要求1所述的果树根腐病防治方法,其特征在于:在步骤(2)中,每隔3个灌根点布置在树冠投影线外部,会有1个灌根点布置在树冠投影线内部。
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