WO2024066031A1 - 一种2甲4氯钠盐和杀虫双的除草杀虫组合物 - Google Patents

一种2甲4氯钠盐和杀虫双的除草杀虫组合物 Download PDF

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WO2024066031A1
WO2024066031A1 PCT/CN2022/136498 CN2022136498W WO2024066031A1 WO 2024066031 A1 WO2024066031 A1 WO 2024066031A1 CN 2022136498 W CN2022136498 W CN 2022136498W WO 2024066031 A1 WO2024066031 A1 WO 2024066031A1
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sodium salt
chloro
methyl
dimehypo
herbicidal
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PCT/CN2022/136498
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English (en)
French (fr)
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颜泽彬
熊金华
李文明
王玉贵
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安徽华星化工有限公司
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Publication of WO2024066031A1 publication Critical patent/WO2024066031A1/zh

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    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
    • A01N39/00—Biocides, pest repellants or attractants, or plant growth regulators containing aryloxy- or arylthio-aliphatic or cycloaliphatic compounds, containing the group or, e.g. phenoxyethylamine, phenylthio-acetonitrile, phenoxyacetone
    • A01N39/02—Aryloxy-carboxylic acids; Derivatives thereof
    • A01N39/04—Aryloxy-acetic acids; Derivatives thereof
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
    • A01N41/00—Biocides, pest repellants or attractants, or plant growth regulators containing organic compounds containing a sulfur atom bound to a hetero atom
    • A01N41/02—Biocides, pest repellants or attractants, or plant growth regulators containing organic compounds containing a sulfur atom bound to a hetero atom containing a sulfur-to-oxygen double bond
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01P—BIOCIDAL, PEST REPELLANT, PEST ATTRACTANT OR PLANT GROWTH REGULATORY ACTIVITY OF CHEMICAL COMPOUNDS OR PREPARATIONS
    • A01P13/00—Herbicides; Algicides

Definitions

  • the invention relates to the technical field of pesticides, and in particular to a weed and insecticide composition of 2-methyl-4-chloro-4-sodium salt and dimehypo.
  • Sodium tetrachlorodimethylamine is a phenoxyacetic acid selective hormone herbicide, and is also a commonly used agent for controlling broadleaf weeds in the production of gramineous crops. It can control most sedge weeds and broadleaf weeds half a month after rice planting. It is mainly used for stem and leaf treatment after seedlings. The agent passes through the cuticle and cytoplasmic membrane, and finally conducts to various parts, producing different effects on nucleic acid and protein synthesis in different parts. It inhibits nucleic acid metabolism and protein synthesis at the top of the plant, stops the growth point from growing, and the young leaves cannot stretch, until photosynthesis cannot proceed normally, thus destroying the normal life ability of the plant, and eventually leading to plant death. Sodium tetrachlorodimethylamine has low toxicity and is safe for the environment and rice.
  • Dimethoate is an artificially synthesized analogue of nereis toxin, which is rapidly converted into nereis toxin or dihydronereis toxin after entering the insect body.
  • the drug is a competitive inhibitor of acetylcholine, has strong contact, stomach poison and systemic transmission effects, and has a good control effect on the larvae of lepidopteran pests. It is a bionic pesticide with little impact on natural enemies, no resistance, no residual toxicity, and no environmental pollution. It is an ideal agent for comprehensive pest control.
  • the agent can effectively control a variety of pests on crops such as rice, vegetables, wheat, corn, tea, and fruit trees, especially for rice leaf rollers, striped stem borers, and yellow stem borers. It has low toxicity to fish organisms.
  • the object of the present invention is to provide a herbicidal and insecticidal composition of 2-methyl-4-chloro-4-sodium salt and dimethoate, which has the advantages of weeding and insecticidal, long lasting effect, low toxicity, low residue, no pollution, and safety to the environment.
  • the dosage of the two agents is reduced compared with that when used alone, thereby improving the herbicidal and insecticidal effect, increasing safety, and reducing environmental pollution, so as to solve the problems raised in the above-mentioned background technology.
  • the present invention provides the following technical scheme: a herbicidal and insecticidal composition of 2-methyl-4-chloro-4-sodium salt and dimehypo, wherein the herbicidal and insecticidal composition comprises effective ingredients of 2-methyl-4-chloro-4-sodium salt and dimehypo, wherein the weight ratio of 2-methyl-4-chloro-4-sodium salt to dimehypo is 1:50-50:1; and the mass content of 2-methyl-4-chloro-4-sodium salt and dimehypo is 1-80%.
  • the weight ratio of the sodium salt of dimethyl tetrachloride to dimehypo is 1:40-40:1.
  • the weight ratio of the sodium salt of dimethyl tetrachloride and dimehypo is 1:30-30:1.
  • the weight ratio of the dimethyl tetrachloride sodium salt to dimehypo is 1:30-15:1.
  • the weight ratio of the sodium salt of dimethyl tetrachloride and dimehypo is 1:30-1:1.
  • the mass content of the 2-methyl-4-chloro-4-sodium salt and dimehypo is 10-60%.
  • the mass content of the 2-methyl-4-chloro-4-sodium salt and dimehypo is 15-50%.
  • the herbicidal and insecticidal composition has 2-methyl-4-chloro-4-sodium salt and dimehypo as active ingredients, and is prepared with pesticide adjuvants to form a pesticide acceptable dosage form.
  • the herbicidal and insecticidal composition is in the form of at least one of an aqueous solution, a wettable powder, and a water dispersible granule, wherein:
  • the preparation method of the herbicide and insecticide water is as follows: using a pesticide adjuvant to dissolve the original drug of 2-methyl-4-chloro-4-sodium salt, then using the pesticide adjuvant to dissolve the original drug of dimehypo, and mixing the dissolved 2-methyl-4-chloro-4-sodium salt solution and dimehypo solution in proportion to prepare the herbicide and insecticide water;
  • the preparation method of the herbicide and insecticide wettable powder is as follows: 2-methyl-4-chloro-sodium salt technical, dimethoate technical and pesticide adjuvant are uniformly mixed in a certain proportion, and the mixed materials are crushed to obtain the herbicide and insecticide wettable powder;
  • the preparation method of the herbicide and insecticide water dispersible granules is as follows: the prepared herbicide and insecticide wettable powder is added to the pesticide adjuvant and mixed, and then granulated by a granulator to prepare the herbicide and insecticide water dispersible granules.
  • the pesticide adjuvant is at least one of a filler and a carrier, an emulsifier, a dispersant, a wetting agent, a spreader, a solvent, a sticker, a stabilizer, a synergist, a release agent and a spray adjuvant.
  • the present invention has the following beneficial effects:
  • the herbicidal and insecticidal composition of 2-methyl-4-chloro-4-sodium salt and dimethoate proposed by the present invention has the advantages of weeding and insecticidal, long lasting effect, low toxicity, low residue, no pollution, and safety to the environment.
  • the dosage of the two agents is reduced compared with that when used alone, thereby improving the herbicidal and insecticidal effect, increasing safety, and reducing environmental pollution;
  • the present invention proposes a weeding and insecticidal composition of 2-methane 4-chloride sodium salt and dimehypo. Field tests show that the existing agent mixed with another pesticide with a different mechanism of action can not only weed, but also kill insects, reduce the number of drug applications, and reduce farmers' pesticide application costs.
  • the present invention compounds 2-methane 4-chloride sodium salt with dimehypo for weeding and insecticidal use. The compounding of the two active ingredients can not only effectively remove weeds, prevent and control most pests, and reduce environmental pollution, but also improve the efficacy and duration of the drug, reduce farmers' labor costs, and have good economic benefits.
  • a herbicidal and insecticidal composition of 2-methyl-4-chloro-sodium salt and dimehypo comprising effective ingredients of 2-methyl-4-chloro-sodium salt and dimehypo, wherein the weight ratio of 2-methyl-4-chloro-sodium salt to dimehypo is 1:50-50:1, and the mass content of 2-methyl-4-chloro-sodium salt and dimehypo is 1-80%.
  • the ratio of 2-methyl-4-chloro-sodium salt and dimehypo in the composition of the present invention can be adjusted within a reasonable range according to the specific application conditions, for example, the weight ratio of 2-methyl-4-chloro-sodium salt and dimehypo is 1:50-50:1, 1:40-40:1, 1:30-30:1, 1:30-25:1, 1:30-20:1, 1:30-15:1, 1:30-10:1, 1:30-5:1, 1:30-1:1, etc. In some preferred embodiments, the weight ratio of the two can be 1:10, 1:5, 1:1, 10:1, 10:5, etc.
  • the mass content of 2-methyl-4-chloro-4-nitrobenzene sodium salt and dimehypo is 10-60%, and further, the mass content of 2-methyl-4-chloro-4-nitrobenzene sodium salt and dimehypo is 15-50%.
  • the herbicidal and insecticidal composition is prepared with 2-methyl-4-chloro-sodium salt and dimethoate as active ingredients and pesticide adjuvants to form a pesticide acceptable formulation;
  • the formulation of the herbicidal and insecticidal composition is at least one of an aqueous solution, a wettable powder, and a water-dispersible granule, wherein:
  • the preparation method of the herbicide and insecticide water is as follows: using a pesticide adjuvant to dissolve the 2-methyl-4-chloro-sodium salt original drug, then using the pesticide adjuvant to dissolve the dimehypo original drug, and mixing the dissolved 2-methyl-4-chloro-sodium salt solution and the dimehypo solution in proportion to prepare the herbicide and insecticide water, wherein the pesticide adjuvant used to dissolve the 2-methyl-4-chloro-sodium salt original drug is a solvent, a dispersant, a stabilizer, and a synergist;
  • the preparation method of the herbicide and insecticide wettable powder is as follows: 2-methyl-4-chloro-sodium salt technical, dimethoate technical and pesticide adjuvant are uniformly mixed in a certain proportion, and the mixed materials are crushed to obtain the herbicide and insecticide wettable powder, wherein the pesticide adjuvant used is a filler and a carrier, a dispersant, a stabilizer and a synergist;
  • the preparation method of the herbicide and insecticide water dispersible granules is as follows: the prepared herbicide and insecticide wettable powder is added with pesticide adjuvants and mixed, and then granulated by a granulator to prepare the herbicide and insecticide water dispersible granules.
  • the pesticide adjuvant is at least one of a filler and a carrier, an emulsifier, a dispersant, a wetting agent, a spreader, a solvent, a sticker, a stabilizer, a synergist, a release agent and a spray adjuvant.
  • composition of the invention can be applied to preventing and controlling weeds and pests in rice fields.
  • test drugs used were 85% 2-methyl-4-chloro-4-naphthenate sodium salt and 45% dimethoate soluble powder.
  • the original drugs were first dissolved in a solvent, and then the required concentration of drug solution was prepared according to the set ratio concentration for use.
  • the 85% 2-methyl-4-chloro-4-naphthenate sodium salt and 45% dimethoate soluble powder used were produced by our company, and the adjuvants were purchased from the market.
  • the above six embodiments prepared by various ratios of 2-methyl-4-chloro-4-sodium salt and dimethoate were used for field efficacy tests on the prevention and control of sedge weeds and broad-leaved weeds and rice leaf rollers.
  • the synergistic effect of the compounding was verified by comparing the effect with 56% 2-methyl-4-chloro-4-sodium salt and 30% dimethoate aqueous solution.
  • the test site was the test site of Nanjing Agricultural University in Nanjing, Jiangsu City, on August 10, 2020. There were twelve treatments in the test, one blank control, three replicates for each treatment, and the plots were randomly arranged.
  • the plot area was 22*5m 2 , and the planting habits of all plots were the same as the local planting habits.
  • Mortality rate or insect population reduction rate (%) (number of live insects before prevention - number of live insects after prevention) / number of live insects before prevention ⁇ 100.
  • Corrected mortality rate or corrected insect population reduction rate (%) (insect population reduction rate in the control area - insect population reduction rate in the control area)/(100% - insect population reduction rate in the control area) ⁇ 100.
  • the results of the weed control field efficacy test were used to calculate the weed control effect based on the changes in the number of weeds, fresh weight and seed setting per unit area.
  • Weed control effect (%) (number of weeds (or fresh weight) in the illumination area - number of weeds (or fresh weight) in the treatment area) / number of weeds (or fresh weight) in the control area ⁇ 100.
  • the prevention effect of the compound preparation 7 days after the application is higher than that 1 day after the application, and the prevention effect 15 days after the application is higher than that 7 days after the application.
  • the compound preparation improves the comprehensive prevention and control effect, reduces the number of drug applications, reduces the workload of farmers, reduces the cost of farmers' drug use, and has better economic benefits.

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Abstract

本发明公开了一种2甲4氯钠盐和杀虫双的除草杀虫组合物，农药技术领域。一种2甲4氯钠盐和杀虫双的除草杀虫组合物，所述除草杀虫组合物包括有效成分2甲4氯钠盐和杀虫双，其中，二甲四氯钠盐和杀虫双的重量比为1：50-50：1；2甲4氯钠盐和杀虫双的质量含量为1-80％。本发明提出的一种2甲4氯钠盐和杀虫双的除草杀虫组合物，具有除草杀虫，持效期长，低毒，低残留，无公害，对环境安全，使用复合制剂，两种药剂的用量均比单一使用时降低，从而提高了除草杀虫效果，增加了安全性，减少了环境污染，本发明将2甲4氯钠盐与杀虫双复配用以除草杀虫，将两种有效成份复配，降低了农民的劳动成本，具有良好的经济效益。

Description

一种2甲4氯钠盐和杀虫双的除草杀虫组合物 技术领域
本发明涉及农药技术领域，特别涉及一种2甲4氯钠盐和杀虫双的除草杀虫组合物。
背景技术
二甲四氯钠盐为苯氧乙酸类选择性激素型除草剂，也是禾本科作物田生产上常用的防除阔叶杂草等药剂。可防除水稻栽插半月后大部分莎草科杂草及阔叶杂草。主要用于苗后茎叶处理，药剂穿过角质层和细胞质膜，最后传导到各部分，在不同部位对核酸和蛋白质合成产生不同影响。在植物顶端抑制核酸代谢和蛋白质的合成，使生长点停止生长，幼嫩叶片不能伸展，一直到光合作用不能正常进行从而破坏植物正常的生活能力，最终导致植物死亡。二甲四氯钠盐低毒，对环境、对水稻安全。
杀虫双是人工合成的沙蚕毒素的类似物，进入昆虫体内迅速转化为沙蚕毒素或二氢沙蚕毒素。该药为乙酰胆碱竞争性抑制剂，具有较强的触杀、胃毒和内吸传导作用，对鳞翅目害虫的幼虫有很好的防治效果。属仿生型农药，对天敌影响小，无抗性，无残毒，不污染环境，是综合治理虫害较理想的药剂。该药剂能有效地防治水稻、蔬菜、小麦、玉米、茶叶、果树等作物上的多种害虫，特别是对水稻稻纵卷叶螟、二化螟、三化螟等有特效。对鱼类生物低毒。
水稻栽插半月后在去除莎草科杂草及阔叶杂草的时候，发现有钻心虫；为了有效控制杂草和害虫的危害，不得不使用除草剂和杀虫剂，为此我们研制出二甲四氯钠盐与杀虫双的组合物，可以一次性除草杀虫。节约工时，提高效率。
发明内容
本发明的目的在于提供一种2甲4氯钠盐和杀虫双的除草杀虫组合物， 具有除草杀虫，持效期长，低毒，低残留，无公害，对环境安全，使用复合制剂，两种药剂的用量均比单一使用时降低，从而提高了除草杀虫效果，增加了安全性，减少了环境污染，以解决上述背景技术中提出的问题。
为实现上述目的，本发明提供如下技术方案：一种2甲4氯钠盐和杀虫双的除草杀虫组合物，所述除草杀虫组合物包括有效成分2甲4氯钠盐和杀虫双，其中，二甲四氯钠盐和杀虫双的重量比为1：50-50：1；2甲4氯钠盐和杀虫双的质量含量为1-80％。
优选的，所述二甲四氯钠盐和杀虫双的重量比为1：40-40：1。
进一步的，所述二甲四氯钠盐和杀虫双的重量比为1：30-30：1。
进一步的，所述二甲四氯钠盐和杀虫双的重量比为1：30-15：1。
更进一步的，所述二甲四氯钠盐和杀虫双的重量比为1：30-1：1。
优选的，所述2甲4氯钠盐和杀虫双的质量含量为10-60％。
进一步的，所述2甲4氯钠盐和杀虫双的质量含量为15-50％。
优选的，所述除草杀虫组合物以2甲4氯钠盐和杀虫双为有效成分，配以农药助剂，制成农药上可接受的剂型。
优选的，所述除草杀虫组合物的剂型为水剂、可湿性粉剂、水分散粒剂中的至少一种，其中，
除草杀虫水剂的制备方法如下：采用农药助剂将2甲4氯钠盐原药溶解，再利用农药助剂将杀虫双原药溶解，将溶解后的2甲4氯钠盐溶解液和杀虫双溶解液按照比例混合均匀，制成除草杀虫水剂；
除草杀虫可湿性粉剂的制备方法如下：将2甲4氯钠盐原药、杀虫双原药和农药助剂按照一定的比例混合均匀，将混合后的材料进行粉碎，得到除草杀虫可湿性粉剂；
除草杀虫水分散粒剂的制备方法如下：将制备完成的除草杀虫可湿性粉剂加入农药助剂混合后，经过造粒机造粒，制成除草杀虫水分散粒剂。
优选的，所述农药助剂为填料和载体、乳化剂、分散剂、湿润剂、展着剂、溶剂、粘着剂、稳定剂、增效剂、隔离剂以及喷雾助剂中的至少一种。
与现有技术相比，本发明的有益效果是：
1、本发明提出的一种2甲4氯钠盐和杀虫双的除草杀虫组合物，具有除草杀虫，持效期长，低毒，低残留，无公害，对环境安全，使用复合制剂，两种药剂的用量均比单一使用时降低，从而提高了除草杀虫效果，增加了安全性，减少了环境污染；
2、本发明提出的一种2甲4氯钠盐和杀虫双的除草杀虫组合物，田间试验表明，现有药剂与作用机制不同的另一种农药混配，不仅能除草，还能杀虫，减少用药次数，降低农民的施药成本，本发明将2甲4氯钠盐与杀虫双复配用以除草杀虫，将两种有效成份复配，不仅可以有效去除杂草、防治大部分害虫，减少环境污染，还能够提高药效及持效期，降低了农民的劳动成本，具有良好的经济效益。
具体实施方式
下面将结合本发明中的实施例，对本发明实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本发明一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都属于本发明保护的范围。
一种2甲4氯钠盐和杀虫双的除草杀虫组合物，除草杀虫组合物包括有效成分2甲4氯钠盐和杀虫双，其中，二甲四氯钠盐和杀虫双的重量比为1：50-50：1，2甲4氯钠盐和杀虫双的质量含量为1-80％。
本发明组合物中的2甲4氯钠盐和杀虫双的配比可根据具体施用情况在合理范围内进行调整，例如二甲四氯钠盐和杀虫双二者的重量比为1：50-50：1、1：40-40：1、1：30-30：1、1：30-25：1、1：30-20：1、1：30-15：1、1：30-10：1、1：30-5：1、1：30-1：1等。在一些优选方案中，二者的重量 比可以为1：10、1：5、1：1、10：1、10：5等。
2甲4氯钠盐和杀虫双的质量含量为10-60％，进一步的，2甲4氯钠盐和杀虫双的质量含量为15-50％。
除草杀虫组合物以2甲4氯钠盐和杀虫双为有效成分，配以农药助剂，制成农药上可接受的剂型；除草杀虫组合物的剂型为水剂、可湿性粉剂、水分散粒剂中的至少一种，其中，
除草杀虫水剂的制备方法如下：采用农药助剂将2甲4氯钠盐原药溶解，再利用农药助剂将杀虫双原药溶解，将溶解后的2甲4氯钠盐溶解液和杀虫双溶解液按照比例混合均匀，制成除草杀虫水剂，2甲4氯钠盐原药溶解使用的农药助剂为溶剂、分散剂、稳定剂、增效剂；
除草杀虫可湿性粉剂的制备方法如下：将2甲4氯钠盐原药、杀虫双原药和农药助剂按照一定的比例混合均匀，将混合后的材料进行粉碎，得到除草杀虫可湿性粉剂，其中使用的农药助剂为填料和载体、分散剂、稳定剂、增效剂；
除草杀虫水分散粒剂的制备方法如下：将制备完成的除草杀虫可湿性粉剂加入农药助剂混合后，经过造粒机造粒，制成除草杀虫水分散粒剂，使用的农药制。
农药助剂为填料和载体、乳化剂、分散剂、湿润剂、展着剂、溶剂、粘着剂、稳定剂、增效剂、隔离剂以及喷雾助剂中的至少一种。
本发明的组合物可应用于防治水稻田杂草和害虫方面。
为了确认2甲4氯钠盐与杀虫双混配，是具有增效作用、相加作用还是拮抗作用，我们首先对2甲4氯钠盐和杀虫双进行了配方筛选研究，将生测的对象定为在我国水稻生产中存在的莎草科杂草、阔叶杂草以及危害最严重的稻纵卷叶螟，具体试验情况以及结果如下：
试验用药采用85％2甲4氯钠盐和45％杀虫双可溶粉，先用溶剂将原药 溶解，根据设定的配比浓度，配制成所需浓度药液备用，所使用的85％2甲4氯钠盐和45％杀虫双可溶粉由本公司自行生产，助剂均为从市场采购。
采用室内生测方法(室内生测方法具体方法在中国专利CN105685042B一种含乙基多杀菌素和杀虫双的杀虫组合物中公开)获得以下毒力测定结果：
Figure PCTCN2022136498-appb-000001
实验结果共毒系数均大于120，其中有的更是超过了180，表明2甲4氯钠盐与杀虫双按不同比例复配时，均具有增效作用。但是在实际生产过程中，一方面要考虑除草杀虫效果，另一方面更要考虑农业使用成本，要把成本控制在农民能接受的经济承受能力范围之内。为此我们选用以下几个配比进行 了了样品试制，并开展了田间药效试验。所用2甲4氯钠盐、杀虫双可溶粉为本公司生产，所用农药助剂为外购。
以下以具体制剂实施例用以进一步详细说明本发明，但本发明绝非仅仅限于以下这些实施例。配方中百分比均为重量百分比。
实施例1：15％2甲4氯钠盐·杀虫双水剂
实施例2：30％2甲4氯钠盐·杀虫双水剂
实施例3：25％2甲4氯钠盐·杀虫双可溶性粉剂
实施例4：60％2甲4氯钠盐·杀虫双可溶性粉剂
实施例5：30％2甲4氯钠盐·杀虫双水分散粒剂
实施例6：50％2甲4氯钠盐·杀虫双水分散粒剂
将2甲4氯钠盐与杀虫双各种不同配比制得的以上六个实施例，进行防治莎草科杂草及阔叶杂草、水稻稻纵卷叶螟的田间药效试验，同时通过与56％2甲4氯钠盐、30％杀虫双水剂的效果对比，验证复配后的增效效果。试验地点为江苏南京南京农业大学试验地，时间为2020年8月10日，试验共十二个处理，一个空白对照，每个处理三个重复，小区随机排列，小区面积22*5m 2，所有小区的种植习惯均与当地的种植习惯相同。
杀虫田间药效试验结果，以死亡率或虫口减退串表示，亦称相对防治效果。但在自然死亡数量大的情况下，还要计算校正死亡率或校正虫口减退串。
死亡率或虫口减退率(％)＝(防前活虫数-防后活虫数)/防前活虫数×100。
校正死亡率或校正虫口减退率(％)＝(防治区虫口减退率-对照区虫口减退率)/(100％-对照区虫口减退率)×100。
Figure PCTCN2022136498-appb-000002
Figure PCTCN2022136498-appb-000003
除草田间药效试验结果，以单位面积内杂草株数、鲜重及结籽实情况的变化，计算除草效果。
除草效果(％)＝(时照区杂草株数(或鲜重)—处理区杂草株数(或鲜重))/对照区杂草株数(或鲜重)×100。
Figure PCTCN2022136498-appb-000004
实验结果是：在使用相同的有效成份剂量下，2甲4氯钠盐和杀虫双不同配比复配后，杂草防治效果及虫口减退率要明显高于两种单剂，所有配方均有明显的增效作用。各配方之间杂草防治效果及虫口减退率，没有明显差异。当配方中杀虫单含量高时，速效性较好，持效性一般，当配方中2甲4氯钠盐含量高时，速效性一般，持效性较好，这一结果也真实反映了这两个药剂的特性。从实验中看出，复配制剂在药后7天的防效要高于药后1天的防效，药后15天的防效要大于药后7天的防效。与单剂相比，复配制剂提升了综合防治效果，减少了用药次数，减轻了农民劳动量，降低了农民用药成本，有较好的经济效益
以上所述，仅为本发明较佳的具体实施方式，但本发明的保护范围并不局限于此，任何熟悉本技术领域的技术人员在本发明披露的技术范围内，根据本发明的技术方案及其发明构思加以等同替换或改变，都应涵盖在本发明的保护范围之内。

Claims (10)

  1. 一种2甲4氯钠盐和杀虫双的除草杀虫组合物，其特征在于：所述除草杀虫组合物包括有效成分2甲4氯钠盐和杀虫双，其中，二甲四氯钠盐和杀虫双的重量比为1：50-50：1；2甲4氯钠盐和杀虫双的质量含量为1-80％。
  2. 如权利要求1所述的一种2甲4氯钠盐和杀虫双的除草杀虫组合物，其特征在于：所述二甲四氯钠盐和杀虫双的重量比为1：40-40：1。
  3. 如权利要求2所述的一种2甲4氯钠盐和杀虫双的除草杀虫组合物，其特征在于：所述二甲四氯钠盐和杀虫双的重量比为1：30-30：1。
  4. 如权利要求3所述的一种2甲4氯钠盐和杀虫双的除草杀虫组合物，其特征在于：所述二甲四氯钠盐和杀虫双的重量比为1：30-15：1。
  5. 如权利要求4所述的一种2甲4氯钠盐和杀虫双的除草杀虫组合物，其特征在于：所述二甲四氯钠盐和杀虫双的重量比为1：30-1：1。
  6. 如权利要求1所述的一种2甲4氯钠盐和杀虫双的除草杀虫组合物，其特征在于：所述2甲4氯钠盐和杀虫双的质量含量为10-60％。
  7. 如权利要求6所述的一种2甲4氯钠盐和杀虫双的除草杀虫组合物，其特征在于：所述2甲4氯钠盐和杀虫双的质量含量为15-50％。
  8. 如权利要求1所述的一种2甲4氯钠盐和杀虫双的除草杀虫组合物，其特征在于：所述除草杀虫组合物以2甲4氯钠盐和杀虫双为有效成分，配以农药助剂，制成农药上可接受的剂型。
  9. 如权利要求8所述的一种2甲4氯钠盐和杀虫双的除草杀虫组合物，其特征在于：所述除草杀虫组合物的剂型为水剂、可湿性粉剂、水分散粒剂中的至少一种，其中，
    除草杀虫水剂的制备方法如下：采用农药助剂将2甲4氯钠盐原药溶解，再利用农药助剂将杀虫双原药溶解，将溶解后的2甲4氯钠盐溶解液和杀虫双溶解液按照比例混合均匀，制成除草杀虫水剂；
    除草杀虫可湿性粉剂的制备方法如下：将2甲4氯钠盐原药、杀虫双原 药和农药助剂按照一定的比例混合均匀，将混合后的材料进行粉碎，得到除草杀虫可湿性粉剂；
    除草杀虫水分散粒剂的制备方法如下：将制备完成的除草杀虫可湿性粉剂加入农药助剂混合后，经过造粒机造粒，制成除草杀虫水分散粒剂。
  10. 如权利要求8所述的一种2甲4氯钠盐和杀虫双的除草杀虫组合物，其特征在于：所述农药助剂为填料和载体、乳化剂、分散剂、湿润剂、展着剂、溶剂、粘着剂、稳定剂、增效剂、隔离剂以及喷雾助剂中的至少一种。
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