CN1048852C - 一种噁唑禾草灵新的使用方法 - Google Patents

一种噁唑禾草灵新的使用方法 Download PDF

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CN1048852C
CN1048852C CN95111157A CN95111157A CN1048852C CN 1048852 C CN1048852 C CN 1048852C CN 95111157 A CN95111157 A CN 95111157A CN 95111157 A CN95111157 A CN 95111157A CN 1048852 C CN1048852 C CN 1048852C
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herbicide
present
weeds
fields
paddy
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CN1124569A (zh
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顾克礼
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Abstract

本发明涉及一种农作物除草剂,特别涉及一种用于水稻田除草的除草剂的使用方法。本发明突破了水稻田除草剂与麦田除草剂不能互为应用的技术偏见,成功地将麦田除草剂唑禾草灵转用作水稻田除草,解决了分蘖期至孕穗的水稻田无特效除草剂,特别是在轻型栽培中稗草、千金子等恶性杂草丛生的难题,减轻了劳动强度、省时省工,对水稻安全无害、使用期长,有利于推广普及轻型栽培。

Description

一种噁唑禾草灵新的使用方法
本发明涉及一种农作物除草剂的使用方法,特别涉及一种用于水稻田除草的除草剂的使用方法。
水稻是我国人民赖以生存的最主要的大宗农作物。随着土地相对集中,农业规模经营扩大,大量出现省工节本又高产稳产的轻型栽培,即简易栽培如直播、抛秧、旱育稀植、麦套稻等。以典型麦套稻为例,其生长过程中最主要的矛盾是杂草问题,由于初始生长阶段个体长势弱,加之群体优势尚未形成,这就给杂草的迅猛生长创造了机会。水稻田杂草种类很多,危害较大的分属于三大类:禾本科、莎草科及部分双叶子杂草,其中危害最大的是稗草、千金子等这类禾本科恶性杂草,它们的特点是前期生长速度快于水稻,中期分蘖多于水稻,扎根深且铺地广,而且其种子极多,一年控制不住,下一年极易形成草荒。针对这类水田杂草发生状况,至今还没有一种水稻田除草剂能有效地控制其杂草危害。现在常用的水稻田除草剂一般只能灭杀草芽,即使是“快杀稗”(又称“神除”)水稻田除草剂对5叶以上的高龄稗草和千金子也基本无效。为此,人们不得不依赖人工拔草保苗,其劳动强度大,费工费时,严重影响水稻轻型栽培的推广普及。
本发明的目的就是要克服上述不足和缺陷,研制一种中期水稻田高效除草剂以消除水稻田里的杂草。
本发明的技术方案:
主要技术特征在于在分蘖期至孕穗的水稻田使用噁唑禾草灵,每公顷31-78克有效剂量。
本发明的优点和效果在于主治中期水稻田10叶以上左右超高龄稗草、千金子等恶性杂草,防治效果稳定在90%以上,对出穗草也有一定的防治效果;同时适合于各种栽培方式的水稻田。尤其适合于轻型栽培水稻田,有利于普及推广轻型栽培,减轻劳动强度,节省工时,而对水稻的安全适应期长,从分蘖至孕穗皆安全无害。也可与其它水稻田除草剂复配使用,实现一次性用药。
国内外植保技术研究和资料表明,噁唑禾草灵是麦田除草剂,只适用于冬、春小麦的内吸苗后除草剂,对看麦娘、野燕麦有特效(然而对大麦、元麦无效),施药期为杂草2-4叶期至分蘖期,使用量为每亩40-60毫升(含量为6.9%)。
水稻田除草剂与麦田除草剂在农作物除草剂方面分属于两个不同的领域:水稻田是水田农作物,它的生长及其杂草的生长具有自己的特点;麦田是旱田农作物,它的生长及其杂草的生长也具有自己的特点。因此,麦田除草剂与水稻田除草剂不可轻易调换使用,否则将造成毁灭性的损失。
本发明突破了上述这一技术偏见,创造性地将麦田除草剂噁唑禾草灵转用作水稻田除草,取得了意想不到的效果。
实施例:
将含量为6.9%的噁唑禾草灵以每亩30-75毫升商品量,即是每公顷31-78克有效剂量直接喷雾或与其它的水稻田除草剂按一定的比例复配后兑水喷雾,使分蘖期至孕穗的水稻田的高龄稗草、千金子等杂草成株自上而下逐节基部由褐色转烂枯萎,幼株则一星期内枯死,叶片成枫红色。复配剂则使水稻叶色短暂褪淡,起到调节水稻地上部生长和地下部断老根长新根作用。噁唑禾草灵在水稻的不同品种、不同生育期、不同土质的试验,均取得了明显的除草效果。

Claims (1)

1.一种噁唑禾草灵新的使用方法,其特征在于在分蘖期至孕穗的水稻田使用噁唑除草灵,每公顷31-78克有效剂量。
CN95111157A 1995-08-11 1995-08-11 一种噁唑禾草灵新的使用方法 Revoked CN1048852C (zh)

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CN1048852C true CN1048852C (zh) 2000-02-02

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Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2640730A1 (de) * 1976-09-10 1978-03-16 Hoechst Ag Heterocyclische phenylaether und diese enthaltende herbizide mittel
US4904295A (en) * 1988-06-15 1990-02-27 Hoechst Roussel Pharmaceuticals, Inc. Selective weed control in cereal grain crops

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2640730A1 (de) * 1976-09-10 1978-03-16 Hoechst Ag Heterocyclische phenylaether und diese enthaltende herbizide mittel
US4904295A (en) * 1988-06-15 1990-02-27 Hoechst Roussel Pharmaceuticals, Inc. Selective weed control in cereal grain crops

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
国外新农药品种手册 1993.10.1 沙家骏,张敏恒,姜雅君等编 *

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