CN100393205C - Chinese wild ginger root extract for alleviating toxicity of metolachlor to rice - Google Patents
Chinese wild ginger root extract for alleviating toxicity of metolachlor to rice Download PDFInfo
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- CN100393205C CN100393205C CNB2005100318439A CN200510031843A CN100393205C CN 100393205 C CN100393205 C CN 100393205C CN B2005100318439 A CNB2005100318439 A CN B2005100318439A CN 200510031843 A CN200510031843 A CN 200510031843A CN 100393205 C CN100393205 C CN 100393205C
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- paddy rice
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- isopropyl methoxalamine
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Abstract
The present invention relates to an extract from Asarum siboldii Miq for preventing paddy rice from being poisoned by metolachlor. An alcohol substance is used as an organic solvent for extraction; the material of the Asarum siboldii Miq is dried, pulverized and sieved; then, the material of the Asarum siboldii Miq is added in an extraction container for back flow extraction in a water bath by adding the alcohol substance, and the extract is obtained after concentration. After the extract from the Asarum siboldii Miq is diluted by adding water, the extract is directly sprayed onto the paddy rice or soil on which the metolachlor is used; the extract from the Asarum siboldii Miq can prevent the paddy rice from being poisoned by the metolachlor, the extract is safe for crops, and the environment is not polluted.
Description
Invention field
The present invention relates to a kind of method of from vegetable material, extracting the isopropyl methoxalamine safener, especially relate to safener and using method thereof, more specifically, the present invention relates to the use of isopropyl methoxalamine safener on paddy rice.
Background technology
Isopropyl methoxalamine belongs to the chloro-acetyl amine weed killer herbicide, is the preceding soil processing herbicide of a kind of selectivity bud efficient, wide spectrum, is mainly used in dry crop and prevents and kill off annual gramineous weed and part broad leaved weed.Isopropyl methoxalamine activity in the paddy field is high especially, and China successfully is used for isopropyl methoxalamine the weed control of transplanting rice field at present.But because paddy rice is to the isopropyl methoxalamine sensitivity, isopropyl methoxalamine easily to the tender paddy rice generation of children poisoning, makes the application of isopropyl methoxalamine in paddy field be subjected to strict restriction when paddy field uses.Herbicide-safener is that a class can reduce the toxicity of weed killer herbicide to crop, by increasing the tolerance of sensitive crop, alleviates or eliminates the injury of weed killer herbicide to crop, has the material of special performance.It do not influence weed killer herbicide to the prerequisite of target weeds activity under selectively cover crop exempt from the poisoning of weed killer herbicide, thereby make many herbicide applications scopes obtain enlarging.So promptly can be old kind new application prospect is provided, increase the service life, help the exploitation of novel herbicide again.Commercial at present chloro-acetyl amine herbicide-safener has benoxacor, cyometrinil, oxabetrinil, naphthalene dimethyl anhydride etc.The country of research mainly contains the U.S., Switzerland, Germany, Japan and Canadian, and states such as Russia, Hungary are also studied.China also pays special attention to this problem, but the synthetic and bioactivity research of relevant safener still is in the starting stage.And relevantly alleviate isopropyl methoxalamine with the vegetalitas safener injury of paddy rice is not appeared in the newspapers as yet.The vegetalitas safener is a kind of novel safener, and it derives from plant, directly protects paddy rice to avoid the poisoning of weed killer herbicide as herbicide-safener with vegetable material or the active component that extracts from plant.
The vegetalitas safener is different from the safener of chemosynthesis, it derives from plant, Environmental compatibility is good, can not cause new pressure to environment, the vegetalitas safener is a brand-new exploration and breakthrough in the safener field, the main performance that safener had of its existing chemosynthesis, the advantage that has the chemosynthesis safener not had again simultaneously, it can not cause new pollution to environment in the whole ecological system.China's plant resources is abundant, and this is China's development vegetalitas resources advantage that safener has.
The objective of the invention is to invent a kind of vegetalitas safener, by using this safener, on the one hand, can remove the poisoning of isopropyl methoxalamine, on the other hand, reach the range of application that enlarges isopropyl methoxalamine paddy rice, reduce the weed killer herbicide consumption, improve herbicidal effect, reduce the weeding cost.
Summary of the invention
The object of the present invention is to provide a kind of vegetalitas herbicide-safener; by using this safener; on the one hand; can protect paddy rice to exempt from the poisoning of isopropyl methoxalamine; on the other hand, reach the range of application that enlarges isopropyl methoxalamine, reduce the weed killer herbicide consumption; improve herbicidal effect, reduce the weeding cost.
Of the present invention being characterized as: a kind of material as herbicide-safener is the extract of the plant root of Chinese wild ginger (Asarum siboldii Miq), and said Herba Asari extract is the alcohols extract of asarum herb.Alcohols comprises one or more in methyl alcohol, ethanol, propyl alcohol, butanols, the amylalcohol.The method of Herba Asari extract is: (1) is pulverized vegetable material is dried under 50～80 ℃ of conditions, pulverizes, and crosses 40～60 mesh sieves; (2) extraction places extractor with the root of Chinese wild ginger fine powder through pulverizing, add alcohols material, as ethanol, its addition is 4～10: 1 (W/W) with the ratio of fine powder weight, refluxing extraction in water-bath, keeping temperature is 80～90 ℃, the time is 6～10h, again extract is concentrated into 10%～25% of amount of alcohol added, obtains Herba Asari extract.
Alleviating the method for isopropyl methoxalamine to the paddy rice injury, is that the protection paddy rice exempts from the murder by poisoning of isopropyl methoxalamine with the safener of Herba Asari extract as the weed killer herbicide isopropyl methoxalamine.
Herba Asari extract in 10～320g/L (amount of application) scope to rice safety.
Described Herba Asari extract and the agent of isopropyl methoxalamine list or isopropyl methoxalamine are made composition pesticide for composite dose, and the preparation made of Herba Asari extract and other insecticides adjuvant.
The alcohols extract of the root of Chinese wild ginger directly is sprayed in paddy rice or the soil after diluting.
Directly be sprayed in the paddy rice or soil of using isopropyl methoxalamine after containing the alcohols extract dilution of the root of Chinese wild ginger, or contain and be sprayed in paddy rice or the soil after the alcohols extract of the described root of Chinese wild ginger and the agent of isopropyl methoxalamine list or composite dose are used in combination.
Herba Asari extract can be removed the injury of isopropyl methoxalamine to paddy rice, when isopropyl methoxalamine concentration was 0.5ml/L, concentration was 5,10,20,40,80,160, the 320g/L Herba Asari extract reaches 126.38%, 162.55%, 169.56%, 178.97%, 166.79%, 145.39%, 138.19% respectively to the facilitation of paddy rice plant height; Facilitation to paddy rice strain fresh weight reaches 111.27%, 137.56%, 141.31%, 146.95%, 136.62%, 120.19%, 115.96% respectively.
When isopropyl methoxalamine concentration was 0.5ml/L, it is best to the effect of paddy rice injury that the 40g/L Herba Asari extract is alleviated isopropyl methoxalamine, and the facilitation of plant height and strain fresh weight is respectively 178.97% and 146.95%.
When Herba Asari extract concentration is 40g/L, can remove of the murder by poisoning of 0～4ml/L isopropyl methoxalamine to some extent to paddy rice.
Result of the test:
(a) leaching process of vegetable matter active ingredient
Earlier vegetable material is dried under 60 ℃ of conditions, pulverize, sieve, take by weighing the vegetable material fine powder then and place apparatus,Soxhlet's, the ethanol as 95%, refluxing extraction in 86～88 ℃ of water-baths gets Herba Asari extract after concentrating, and places refrigerator stand-by.
(b) screening of safener
Adopt the earth culture method, concrete operations are: load onto the air-dry sandy loam that sieves in plastic casing, choose presoaking and germinating to the rice paddy seed that shows money or valuables one carries unintentionally and be seeded in the plastic casing.Put into illumination box then and cultivate, isopropyl methoxalamine and plant extracts with variable concentrations behind the 3d are handled, cultivate 7d again after, measure plant height and the strain fresh weight of paddy rice.The result shows: Herba Asari extract can be alleviated the injury of isopropyl methoxalamine to paddy rice significantly.
(c) Herba Asari extract is to the influence of paddy growth
Adopt the earth culture method to cultivate paddy rice, handle paddy rice with Herba Asari extract behind the 3d, cultivate 7d again after, measure paddy rice plant height, strain fresh weight.
(d) Herba Asari extract is to the antidotal effect of isopropyl methoxalamine
Adopt the earth culture method to cultivate paddy rice, handle paddy rice with isopropyl methoxalamine and Herba Asari extract behind the 3d, cultivate 7d again after, measurement paddy rice plant height, strain fresh weight.
Advantage of the present invention and good effect: detoxifying effect is obvious.A large amount of indoor bioassay show that isopropyl methoxalamine easily produces injury to paddy rice, after Herba Asari extract is handled paddy rice, can alleviate the injury of isopropyl methoxalamine to paddy rice significantly, have good antidotal effect.Enlarge the range of application of isopropyl methoxalamine.Because isopropyl methoxalamine uses easily the tender paddy rice of children to be produced on paddy rice and poisons, thereby is subjected to strict restriction, after Herba Asari extract is handled paddy rice, can remove the murder by poisoning of isopropyl methoxalamine to paddy rice, thereby enlarge the range of application of isopropyl methoxalamine.The root of Chinese wild ginger belongs to vegetable material, and good with Environmental compatibility, its extract is applied to paddy rice, to rice safety, and can not pollute environment.
Specific embodiment
Embodiment 1
The following examples are to further specify of the present invention, below are the results of indoor bioassay, but should regard the restriction of by any way range of application of the present invention being carried out as in any case.
Earlier vegetable material is dried under 60 ℃ of conditions, pulverizes, cross 40 mesh sieves (aperture 0.47mm) after, preserve standby in refrigerator (0～4 ℃).Take by weighing vegetable material fine powder 20g and place the 250mL apparatus,Soxhlet's, add the ethanol of 200 mL95%, refluxing extraction 8h in 86～88 ℃ of water-baths gets extract 20mL (being equivalent to dry powder 1g/mL) after concentrating, and places refrigerator stand-by.
In the plastic casing of 13cm * 8cm * 5cm, load onto the 200g air dried soil, add the 100mL running water.Rice paddy seed is used 0.1%HgCl earlier
2Sterilization 15min, 28 ℃ of following clear water soak 24h, 30 ℃ of following vernalization 12h, select seed of the same size to be sowed in the plastic casing after showing money or valuables one carries unintentionally, 15 in every box places 26 ℃ of temperature daytimes, 22 ℃ of evenings, intensity of illumination is to cultivate in the constant temperature illumination box of 6000LuX, and the continuous illumination 12h that circulates every day carries out chemicals treatment behind the 3d.
96% isopropyl methoxalamine emulsion is made into the solution of 0.5ml/L, in every box, add the 1mL soup respectively, again Herba Asari extract is diluted to 5 with deionized water, 10,20,40,80,160, the soup of seven concentration of 320g/L, spray the 1mL Herba Asari extract in every box, each concentration of treatment is established 3 repetitions, compare with clear water and 0.5ml/L isopropyl methoxalamine and to continue to place 26 ℃ of temperature daytimes after the dispenser, 22 ℃ of evenings, intensity of illumination is to support in the constant temperature illumination box of 6000LuX, the continuous illumination 12h that circulates every day, 7d measures paddy rice plant height and strain fresh weight after the chemicals treatment.Herba Asari extract is removed the injury effect of isopropyl methoxalamine to paddy rice.The result is as shown in table 1.
Table 1 Herba Asari extract is removed the effect of isopropyl methoxalamine to the paddy rice injury
1) plant height is the mean value of ten strains; 2) be growth rate in the bracket.
Embodiment 2
Removing the land for growing field crops evaluating drug effect that isopropyl methoxalamine is poisoned paddy rice, is example with the ethanol extract of the root of Chinese wild ginger.
Extracting method: press the ethanol extract that the described extracting method of summary of the invention (a) obtains the root of Chinese wild ginger
Rice varieties: train two excellent 288
Isopropyl methoxalamine: 72% isopropyl methoxalamine EC
Paddy rice is in sowing seedling on June 21st, 2004, carry out chemicals treatment when treating rice shoot length to 3 leaves, 1 heart, processing method is that rice shoot is carried out even directed spraying, every mu of dilution that sprays after 72% isopropyl methoxalamine EC 120mL converts water 40kg, 7d finds that tangible poisoning appears in paddy rice behind the medicine, symptom of chemical damage is the plant dwarfing, root system is undeveloped, the paddy rice plant height is starkly lower than the paddy rice plant height that is untreated with breeding time, and every mu of mixed liquid that sprays the ethanol extract 30kg of the 72% isopropyl methoxalamine EC 120mL and the root of Chinese wild ginger is converted the dilution behind the water 40kg, the 7d paddy rice does not have obvious symptom of chemical damage behind the medicine, the paddy rice plant height is near being untreated with the paddy rice plant height of breeding time, and the ethanol extract that the root of Chinese wild ginger be described has removes the effect of isopropyl methoxalamine to the paddy rice murder by poisoning significantly.
Claims (2)
1. alleviate the method that paddy rice exempts from the isopropyl methoxalamine murder by poisoning for one kind, it is characterized in that: directly be sprayed in the paddy rice or soil of using isopropyl methoxalamine after will containing the alcohols extract dilution of the root of Chinese wild ginger, maybe will contain and be sprayed in paddy rice or the soil after the alcohols extract of the described root of Chinese wild ginger and the agent of isopropyl methoxalamine list or composite dose are used in combination, the alcohols extract of the root of Chinese wild ginger in 10～320g/L working concentration scope to rice safety.
2. alleviation paddy rice according to claim 1 exempts from the method that isopropyl methoxalamine is poisoned, and it is characterized in that: described alcohols is one or more in methyl alcohol, ethanol, propyl alcohol, butanols, the amylalcohol.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100318439A CN100393205C (en) | 2005-07-11 | 2005-07-11 | Chinese wild ginger root extract for alleviating toxicity of metolachlor to rice |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100318439A CN100393205C (en) | 2005-07-11 | 2005-07-11 | Chinese wild ginger root extract for alleviating toxicity of metolachlor to rice |
Publications (2)
| Publication Number | Publication Date |
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| CN1714638A CN1714638A (en) | 2006-01-04 |
| CN100393205C true CN100393205C (en) | 2008-06-11 |
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| CNB2005100318439A Expired - Fee Related CN100393205C (en) | 2005-07-11 | 2005-07-11 | Chinese wild ginger root extract for alleviating toxicity of metolachlor to rice |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101965833B (en) * | 2010-10-15 | 2013-04-24 | 湖南农业大学 | Method for relieving toxic hazard of amide herbicide to rice by using zanthoxylum bungeanum extract |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1134785A (en) * | 1996-01-19 | 1996-11-06 | 谢祥其 | Herbcide composition for rice field |
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2005
- 2005-07-11 CN CNB2005100318439A patent/CN100393205C/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1134785A (en) * | 1996-01-19 | 1996-11-06 | 谢祥其 | Herbcide composition for rice field |
Non-Patent Citations (2)
| Title |
|---|
| 细辛提取物对家兔血压的影响. 马晓红，宫汝淳，潘晓鹏.人参研究，第2003卷第3期. 2003 |
| 细辛提取物对家兔血压的影响. 马晓红，宫汝淳，潘晓鹏.人参研究，第2003卷第3期. 2003 * |
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| CN1714638A (en) | 2006-01-04 |
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Assignee: Yueyang lerkam biological Co. Ltd. Assignor: Hunan Agricultural University Contract record no.: 2010430000058 Denomination of invention: Chinese wild ginger root extract for alleviating toxicity of metolachlor to rice Granted publication date: 20080611 License type: Exclusive License Open date: 20060104 Record date: 20100527 |
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Assignee: Hunan Lerkam Biology Co., Ltd. Assignor: Hunan Agricultural University Contract record no.: 2010430000058 Date of cancellation: 20110428 |
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