CN105284799B - A kind of plant protection product and the method for slowing down industrial hemp poisoning - Google Patents
A kind of plant protection product and the method for slowing down industrial hemp poisoning Download PDFInfo
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- CN105284799B CN105284799B CN201510819792.XA CN201510819792A CN105284799B CN 105284799 B CN105284799 B CN 105284799B CN 201510819792 A CN201510819792 A CN 201510819792A CN 105284799 B CN105284799 B CN 105284799B
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- rhizoma chuanxiong
- herbicide
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Abstract
The present invention relates to technical field of pesticide more particularly to a kind of plant protection product and the method for slowing down industrial hemp poisoning, the plant protection product is Rhizoma Chuanxiong extract, and the Rhizoma Chuanxiong extract is to pass through CO2What supercritical fluid extraction extracted, the safety using amount of the plant protection product is greater than 0 and is less than or equal to 200g/L.The plant protection product can be directly sprayed on the industrial hemp for applying S-metolachlor or in soil; industrial hemp herbicide can also be prepared by mixing into S-metolachlor single dose or S-metolachlor compounding agent; the herbicide is directly sprayed on industrial hemp or in soil, can both have the function that slow down S-metolachlor to industrial hemp poisoning well.
Description
Technical field
The present invention relates to technical field of pesticide more particularly to a kind of plant protection product and the sides for slowing down industrial hemp poisoning
Method.
Background technology
S-metolachlor belongs to chloro-acetyl amine herbicide, is a kind of efficient, wide spectrum selective preemergence herbicide,
It is mainly used for the Dry crops such as corn and soybean peanut, industrial hemp field and prevents and kill off annual gramineous weed and most broad leaved weeds.So
And since industrial hemp is sensitive to the acetamide-group herbicides including S-metolachlor, S-metolachlor is industrial big
Emergence rate is influenced during numb field use, and poisoning easily is generated to tender industrial hemp fiber crops seedling so that S-metolachlor is in work
The application in sparetime university fiber crops field is restricted.Herbicide-safener is that one kind is not influencing premise of the herbicide to target weeds activity
Under, selective cover crop face is from herbicide damage, the chemical substance of unique energy.This kind of substance can enhance work
Object does not influence effect of herbicides to the tolerance of herbicide, safety of the increase herbicide to crop, thus can make many
The application range of herbicide kind is expanded, and be may be either that the old kind of herbicide provides new application prospect, is extended it and use the longevity
Life, and be conducive to the exploitation of herbicide new varieties.The chloroacetyl ammonia herbicide-safener of current commercialization mainly has solution grass
Ketone, cyometrinil, oxabetrinil, naphthalene dimethyl anhydride etc..Mainly there are the U.S., Switzerland, Germany, Japan and Canada, Russia in the country of research
The states such as Ross, Hungary are also being studied.China also extremely pays close attention to this field, but the synthesis in relation to safener and bioactivity are ground
Study carefully it is still at an early stage, and in relation to vegetalitas safener alleviate acetamide-group herbicides not yet appear in the newspapers to the poisoning of industrial hemp
Road.Vegetalitas safener derives from plant, pacifies with vegetable material or from the active constituent of plant extract directly as herbicide
Full agent carrys out safeguard industries hemp from herbicide damage, is a kind of novel safener.
Vegetalitas safener is different from the safener of chemical synthesis, it derives from plant, and Environmental compatibility is good, will not give ring
New pollution is caused in border, and vegetalitas safener is completely new an exploration and breakthrough in safener field, its existing chemical synthesis
Safener possessed by main performance, while the advantage for having chemical synthesis safener not have again, i.e., it is in entire ecology
New pollution will not be caused in system to environment.China's plant resources very abundant, this is development vegetalitas safener institute of China
The resources advantage having.
Invention content
First purpose of the present invention is to provide a kind of industrial hemp plant protection product, and the plant protection product is Rhizoma Chuanxiong
Extract.
The plant protection product can be with the compoundings such as other insecticides adjuvants commonly used in the art, such as dispersant, emulsifier, filler
It uses, dosage form commonly used in the art, such as aqua, emulsifier, suspending agent etc. is made.
Rhizoma Chuanxiong (the Ligusticum chuanxiong hort) extract is prepared by supercritical fluid method
's.Preferably, the supercritical fluid method is CO2Supercritical fluid method (CO2-SFE)。
The present invention provides using CO2The method that supercritical fluid method prepares the Rhizoma Chuanxiong extract, includes the following steps：
(1) Rhizoma Chuanxiong is dried, crushes, obtain Rhizoma Chuanxiong crushed material；
(2) the Rhizoma Chuanxiong crushed material is passed through into CO under the conditions of 60-70 DEG C, 30-40MPa2Supercritical fluid method extracts, and obtains
Rhizoma Chuanxiong extract；
(3) the Rhizoma Chuanxiong extract is detached to get the Rhizoma Chuanxiong extract.
Preferably, in step (1), the drying temperature of Rhizoma Chuanxiong is 50-80 DEG C；It is further preferred that 40-60 is crossed after crushing
Mesh sieves.
Preferably, in step (2), extraction time 2-3h.
Preferably, in step (3), first the Rhizoma Chuanxiong extract is carried out for the first time to divide under the conditions of 5-8MPa, 40-55 DEG C
From obtaining first time isolate, then carrying out second to first time isolate under the conditions of 5-8MPa, 40-50 DEG C detaches, and obtains institute
State Rhizoma Chuanxiong extract.
The present invention provides a kind of preparation methods of preferable Rhizoma Chuanxiong extract, include the following steps：
(1) Rhizoma Chuanxiong under the conditions of 50-80 DEG C is dried, crushed, crossed 40-60 mesh sieve, obtain Rhizoma Chuanxiong crushed material；
(2) the Rhizoma Chuanxiong crushed material described in step (1) is passed through into CO2Supercritical fluid method is extracted, extraction temperature 60-
70 DEG C, extracting pressure 30-40MPa, extraction time 2-3h obtain Rhizoma Chuanxiong extract；
(3) the Rhizoma Chuanxiong extract described in step (2) under the conditions of 5-8MPa, 40-55 DEG C is subjected to first time separation, obtains
Then first separation object carries out the first time isolate under the conditions of 5-8MPa, 40-50 DEG C second of separation to get institute
State Rhizoma Chuanxiong extract.
The present invention provides a kind of preparation methods of best Rhizoma Chuanxiong extract, include the following steps：
(1) Rhizoma Chuanxiong under the conditions of 50-80 DEG C is dried, crushed, crossed 40-60 mesh sieve, obtain Rhizoma Chuanxiong crushed material；
(2) the Rhizoma Chuanxiong crushed material described in step (1) is passed through into CO2Supercritical fluid method is extracted, extraction temperature 60
DEG C, extracting pressure 30MPa, extraction time 2h obtain Rhizoma Chuanxiong extract；
(3) the Rhizoma Chuanxiong extract described in step (2) under the conditions of 8MPa, 55 DEG C is subjected to first time separation, obtained for the first time
Then isolate carries out the first time isolate second of separation under the conditions of 5MPa, 50 DEG C and is extracted to get the Rhizoma Chuanxiong
Object.
In the preparation process of Rhizoma Chuanxiong extract, any entrainer is not added with, it is safer.
Second object of the present invention is to provide a kind of industrial hemp herbicide, and the herbicide includes above-mentioned any one
Kind Rhizoma Chuanxiong extract, further includes S-metolachlor.Industrial hemp Herbicide Jing isopropyl methoxalamine and the Rhizoma Chuanxiong extract
It is used in compounding, it being capable of poisoning of the effective protection herbicide to hemp.
With herbicide agriculture can be made with S-metolachlor single dose or S-metolachlor compounding agent in the industrial hemp
Drug composition further, can add in auxiliary agent commonly used in the art, such as dispersant, emulsifier, it is normal that this field is made in filler etc.
Dosage form, such as aqua, emulsifier, suspending agent etc..
Preferably, the herbicide includes 1-3g/L S-metolachlors, 0.01-200g/L plant protection products.
It is further preferred that the herbicide includes 1-3g/L S-metolachlors, 0.01-4g/L plant protection products.
Most preferably, the herbicide includes 1-3g/L S-metolachlors, 2g/L plant protection products.At this concentration,
The effect of herbicide can play maximum with plant protection product, can protect to greatest extent while reaching best herbicidal effect
Industrial hemp is not by the poisoning of herbicide.
Third object of the present invention is to provide any one above-mentioned plant protection product or herbicide and is slowing down smart isopropyl first
Careless amine is to the application in industrial hemp poisoning.
Fourth object of the present invention be to provide it is a kind of slow down method of the S-metolachlor to industrial hemp poisoning, it is described
Method is：When cannabis seeds break ground sprouting, S-metolachlor herbicide is first sprayed, then sprays any one above-mentioned plant and protects
Protect agent；Alternatively, when cannabis seeds break ground sprouting, any one above-mentioned herbicide is directly sprayed.
When herbicide is separately sprayed with plant protection product, the S-metolachlor herbicide is S-metolachlor concentration
The aqueous solution of 1-3g/L.The plant protection product is the aqueous solution of Rhizoma Chuanxiong extract concentration 0.01-200g/L, it is preferable that described
Plant protection product is the aqueous solution of Rhizoma Chuanxiong extract concentration 0.01-4g/L, it is further preferred that the plant protection product is Rhizoma Chuanxiong
The aqueous solution of extract concentrations 2g/L.
Best slow down method of the S-metolachlor to industrial hemp poisoning, the method the present invention provides a kind of
For：When cannabis seeds break ground sprouting, the herbicide aqueous solution of a concentration of 1-3g/L of S-metolachlor is first sprayed, then spray river
Rhizome of chuanxiong extract concentrations are the plant protection product aqueous solution of 2g/L.
Specific embodiment
The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention..Involved in following examples
Rhizoma Chuanxiong extract is to be prepared using the method for embodiment 1.
Embodiment 1
A kind of industrial hemp plant protection product, the plant protection product are Rhizoma Chuanxiong extract, and the Rhizoma Chuanxiong extract is
It is prepared via a method which：
(1) Rhizoma Chuanxiong under the conditions of 75 DEG C is dried, crushed, crossed 40-60 mesh sieve, obtain Rhizoma Chuanxiong crushed material；
(2) the Rhizoma Chuanxiong crushed material is passed through into CO2Supercritical fluid method is extracted, and extraction temperature is 60 DEG C, extraction pressure
Power is 30MPa, and extraction time 2h obtains Rhizoma Chuanxiong extract；
(3) the Rhizoma Chuanxiong extract is subjected to first time separation under the conditions of 8MPa, 55 DEG C, then in 5MPa, 50 DEG C of items
Second of separation is carried out under part to get the Rhizoma Chuanxiong extract, Rhizoma Chuanxiong recovery rate is 5%, is sealed against being placed in 4 DEG C of refrigerators and treat
With.
Embodiment 2
A kind of herbicide, the Rhizoma Chuanxiong extract that the herbicide is prepared by 2g S-metolachlors, 2g embodiments 1,
1L water forms.
Embodiment 3
A kind of to slow down method of the S-metolachlor to industrial hemp poisoning, the method is：When hemp breaks ground rudiment,
The S-metolachlor aqueous solution of a concentration of 2g/L of S-metolachlor is first sprayed, it is a concentration of then to spray Rhizoma Chuanxiong extract again
The plant protection product aqueous solution of 2g/L.
Embodiment 4
A kind of to slow down method of the S-metolachlor to industrial hemp poisoning, the method is：When hemp breaks ground rudiment,
Directly spray the herbicide described in claim 2.
Illustrate the effect of the present invention below by experimental example.
Experimental example one
It is 1 that wind desiceted soil is packed into the plastic cup that the length of side is 7cm with substrate soil proportioning:1 composite soil, industrial hemp seed
Seed soaking is chosen full, consistent seed and is sowed in plastic cup after 8 hours at 25-28 DEG C, every glass 8-12.It will sowing
Plastic cup afterwards be placed in 26-29 DEG C of temperature, humidity 50-60% greenhouse in cultivate, when seed break ground sprouting when handled.
960g/L S-metolachlors EC is made into the aqueous solution of 2g/L, is uniformly sprayed on sprouting cannabis seeds, then distinguish
Spray various concentration Rhizoma Chuanxiong extract aqueous solution (0.0625,0.125,0.25,0.5,1,2,4g/L), each handle 3 repetitions,
Complete blank control and S-metolachlor (2g/L) is set to compare, continues, according to above-mentioned condition culture 7 days, to measure industrial hemp
Plant height and strain fresh weight.Rhizoma Chuanxiong extract releases result such as table 1 of the S-metolachlor to industrial hemp injury effect, shown in table 2：
The plant height and fresh weight of the lower industrial hemp of 1. Rhizoma Chuanxiong extract different amounts of table processing
The lower plant height of industrial hemp of 2. Rhizoma Chuanxiong extract different amounts of table processing and fresh weight promotion rate
Number 1：The herbicide aqueous solution of S-metolachlor concentration 2g/L is first sprayed, then sprays Rhizoma Chuanxiong extract concentration
The plant protection product aqueous solution of 0.0625g/L；
Number 2：The herbicide aqueous solution of S-metolachlor concentration 2g/L is first sprayed, then sprays Rhizoma Chuanxiong extract concentration
The plant protection product aqueous solution of 0.125g/L；
Number 3：The herbicide aqueous solution of S-metolachlor concentration 2g/L is first sprayed, then sprays Rhizoma Chuanxiong extract concentration
The plant protection product aqueous solution of 0.25g/L；
Number 4：The herbicide aqueous solution of S-metolachlor concentration 2g/L is first sprayed, then sprays Rhizoma Chuanxiong extract concentration
The plant protection product aqueous solution of 0.5g/L；
Number 5：The herbicide aqueous solution of S-metolachlor concentration 2g/L is first sprayed, then sprays Rhizoma Chuanxiong extract concentration
The plant protection product aqueous solution of 1g/L；
Number 6：The herbicide aqueous solution of S-metolachlor concentration 2g/L is first sprayed, then sprays Rhizoma Chuanxiong extract concentration
The plant protection product aqueous solution of 2g/L；
Number 7：The herbicide aqueous solution of S-metolachlor concentration 2g/L is first sprayed, then sprays Rhizoma Chuanxiong extract concentration
The plant protection product aqueous solution of 4g/L；
Number 8：Only spray the herbicide aqueous solution of S-metolachlor concentration 2g/L；
Number 9：Blank control
Experimental example two
Industrial hemp (Shanxi fiber crops No. 1) was sowed on June 15th, 2015, and chemicals treatment, processing method are carried out after sowing earthing
It is that soil spraying is carried out to sowing industrial hemp, S-metolachlor dosage is 80g per acre, is watered 45kg.3 after chemicals treatment
Poisoning can be observed in it, and poisoning is notable after 5 days, and it is undeveloped to show as root system, and plant is downgraded, and blade is withered and yellow, hence it is evident that less than not locating
Reason is the same as breeding time industrial hemp plant height.And per acre using 80g S-metolachlors and 90g Rhizoma Chuanxiong extracts, it is watered 45kg sprayings
Afterwards, without apparent symptom of chemical damage, industrial hemp plant height illustrates Rhizoma Chuanxiong close to untreated same breeding time industrial hemp plant height within 5 days after medicine
Extract, which has, significantly releases toxic action of the S-metolachlor to industrial hemp.
Although above having used general explanation, specific embodiment and experiment, the present invention is made to retouch in detail
It states, but on the basis of the present invention, it can be made some modifications or improvements, this is apparent to those skilled in the art
's.Therefore, these modifications or improvements without departing from theon the basis of the spirit of the present invention, belong to claimed
Range.
Claims (2)
1. a kind of herbicide, it is characterised in that：The herbicide is by 2g S-metolachlors, 2g Rhizoma Chuanxiong extracts, 1L water composition；
The Rhizoma Chuanxiong extract is prepared via a method which to obtain：
(1) Rhizoma Chuanxiong under the conditions of 75 DEG C is dried, crushed, crossed 40-60 mesh sieve, obtain Rhizoma Chuanxiong crushed material；
(2) the Rhizoma Chuanxiong crushed material is passed through into CO2Supercritical fluid method is extracted, and extraction temperature is 60 DEG C, and extracting pressure is
30MPa, extraction time 2h obtain Rhizoma Chuanxiong extract；
(3) the Rhizoma Chuanxiong extract is subjected to first time separation under the conditions of 8MPa, 55 DEG C, then under the conditions of 5MPa, 50 DEG C
Second of separation is carried out to get the Rhizoma Chuanxiong extract, Rhizoma Chuanxiong recovery rate is 5%, is sealed against being placed in 4 DEG C of refrigerators for use.
2. a kind of slow down method of the S-metolachlor to industrial hemp poisoning, which is characterized in that the method is：In hemp kind
Son break ground sprouting when, first spraying concentration be 2g/L S-metolachlor herbicide aqueous solution, then spraying concentration be 2g/L power
Profit requires the Rhizoma Chuanxiong extract aqueous solution described in 1；Alternatively, when cannabis seeds break ground sprouting, directly spray described in claim 1
Herbicide.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510819792.XA CN105284799B (en) | 2015-11-23 | 2015-11-23 | A kind of plant protection product and the method for slowing down industrial hemp poisoning |
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| CN201510819792.XA CN105284799B (en) | 2015-11-23 | 2015-11-23 | A kind of plant protection product and the method for slowing down industrial hemp poisoning |
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| CN105284799A CN105284799A (en) | 2016-02-03 |
| CN105284799B true CN105284799B (en) | 2018-06-26 |
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| CN114946555B (en) * | 2022-04-25 | 2022-12-02 | 黑龙江省农业科学院经济作物研究所 | Cultivation and weeding method suitable for industrial hemp |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1714640A (en) * | 2005-07-11 | 2006-01-04 | 湖南农业大学 | Ligusticum wallichii extract for preventing rice from poisoning by acetochlor |
| CN1857346A (en) * | 2006-03-29 | 2006-11-08 | 广州合诚三先生物科技有限公司 | Extraction process of effective Chuanxiong component |
| US20120058896A1 (en) * | 2006-12-21 | 2012-03-08 | Kumiai Chemical Industry Co., Ltd. | Herbicidal composition |
-
2015
- 2015-11-23 CN CN201510819792.XA patent/CN105284799B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1714640A (en) * | 2005-07-11 | 2006-01-04 | 湖南农业大学 | Ligusticum wallichii extract for preventing rice from poisoning by acetochlor |
| CN1857346A (en) * | 2006-03-29 | 2006-11-08 | 广州合诚三先生物科技有限公司 | Extraction process of effective Chuanxiong component |
| US20120058896A1 (en) * | 2006-12-21 | 2012-03-08 | Kumiai Chemical Industry Co., Ltd. | Herbicidal composition |
Non-Patent Citations (1)
| Title |
|---|
| 川芎提取物解除精异丙草胺对水稻药害的研究;李静波;《湖南农业大学博士学位论文》;20121115;摘要，第1-55页 * |
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