CN1286027A - Pre-emergence chemical herbicide for early rice field after sowing and its application method - Google Patents
Pre-emergence chemical herbicide for early rice field after sowing and its application method Download PDFInfo
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- CN1286027A CN1286027A CN 99113205 CN99113205A CN1286027A CN 1286027 A CN1286027 A CN 1286027A CN 99113205 CN99113205 CN 99113205 CN 99113205 A CN99113205 A CN 99113205A CN 1286027 A CN1286027 A CN 1286027A
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Abstract
A pre-emergence chemical herbicide for upland rice is prepared from 12% oxadiazon emulsifiable concentrate, 25% nitrofen and 60% butachlor through mixing. It is applied by diluting it with water and spraying on field. Its advantage is high effect.
Description
The present invention relates to dryland paddy is soil treatment weeding technology before the direct sowing rice field bud, and specifically a kind of upland rice is broadcast preceding weeds in field chemical control agent of back bud and application process thereof.
In the prior art, broadcast back, the problem of preventing and kill off of weeds in field before the bud at upland rice, people study always and put into practice, before the back seedling is broadcast in upland rice (direct-sowing dry) field aspect the weeding, so far neither one effectively before technical measures, there was 60% butachlor of employing to carry out face of land spraying in the past to broadcasting back 3 days dryland paddy, or spread fertilizer over the fields with 25% nitrofen, or spray with 12% Lonster, or 50% benthiocarb missible oil spraying, not only dosage is big, and weak effect, at proper timing of insecticide application, the rate of always preventing and kill off is only about 50%-70%; The compound mixture that has is the little or unreasonable impact effect of liquid medicine proportioning because of dosage, make and always prevent and kill off efficient and do not reach 80%, and it is single to fill a prescription, the effect of influence technique and promotional value, according to " weeds journal " but September in 1991 the 5th volume the 3rd phase 〃 dryland paddy weeds generation and anti-crack 〃 report and convert water 750kg/ hectare by 10% careless jinx's warm nature pulvis 60ml/ hectare+butachlor 1125ml/ hectare always to prevent and kill off efficient be that 71%, 12% Lonster 1125ml/ hectare+60% butachlor 1125ml/ hectare is converted water 750kg/ hectare broad leaved weed is prevented and kill off efficient only is 53.3%.
According to above-mentioned deficiency, it is a kind of reasonable with medicine composition to the invention provides, and the tangible upland rice of preventive effect is broadcast preceding weeds in field chemical control agent of back bud and application process thereof.
The object of the present invention is achieved like this: think its missible oil 2.25～6.0kg/ hectare or 25% nitrofen, 5.25～11.25kg/ hectare by containing 12% farming, add that containing 60% butachlor, 1.5～4.5kg/ hectare forms prescription.
Described nitrofen is wetting powder or milk powder; Described farming is thought its missible oil and be can be 25% concentration, and consumption is 1.0～3.0kg/ hectare;
Application process of the present invention is to convert the water yield to 750～1200kg/ hectare after above-mentioned prescription is mixed, and fully sparges soil surface behind the mixing, uses in after planting 3～10 days in upland rice; Rainy day or face of land humidity are used the minimum of the water yield, and arid weather is used the highest limit of the water yield, and medicament is now with now converting.
The present invention has following advantage:
1. adopt broad weed-killing spectrum of the present invention, prevent and kill off the efficient height.To multiple annual gramineous weed, broad leaved weed, Chenopodiaceae, Amaranthaceae, Euphorbiaceae, jealous woman slurry section, Convolvulaceae weeds there is special efficacy, to grass family and sedge weed is efficient reaches more than 99%, reach more than 98% other section weeds are efficient, total effective rate is more than 98.5%.
2. the present invention fills a prescription rationally.The present invention adopts two kinds of pharmacy mix, uses separately with two kinds of medicaments that to compare consumption little, and the drug effect height avoided medication single and produce the weed community pesticide resistance, and preceding a kind of medicament can be alternative with another kind of medicament, the flexibility that has improved feasibility and technology.
3. the medicament configuration proportion amplitude broad of the present invention's employing is easily grasped, and is convenient to operation; On dosing, more reasonable on the consumption of water in addition, can fully guarantee technique effect; Preventive effect can reach more than 40 days.
Below in conjunction with embodiment the present invention is described in further detail.
Embodiment 1
Mix with 25% nitrofen wetting powder 5.25kg/ hectare and 60% butachlor 1.5kg/ hectare missible oil, convert water 7500kg/ hectare, evenly spray on viscosity brunisolic soil surface after 5 days in the dryland paddy sowing, the soil surface humidity, respectively at the 10th day, 20 days, 40 days investigation weeds in field strain numbers behind the spray medicine, the result shows the grassy weed preventive effect is reached 99% that other section's weeds preventive effects reach 98%.
Embodiment 2
Think its missible oil 6.0kg/ hectare and the mixing of 60% butachlor 4.5kg/ hectare with 12% farming, convert water 1200kg/ hectare, evenly spray on grittiness brunisolic soil surface after 5 days in the dryland paddy sowing, its soil is arid, 10 days, 20 days, 40 days investigation weeds in field strain numbers behind the spray medicine, the result shows the grassy weed preventive effect is reached 98%, and other section's weeds preventive effects are stated 97.8%, is to prevent and kill off the highest prescription of rate at present.
Embodiment 3
Mix with 25% nitrofen wetting powder 8.0kg/ hectare and 60% butachlor ec 3.0kg/ hectare, convert water 900kg/ hectare, in after planting 5 days even spraying of dryland paddy on soil surface, soil is more moistening, broadcast back 10 days, 20 days, investigating weeds in field strain numbers for 40 days three times, the result shows that this processing reaches 99.5% to the grassy weed preventive effect, and other section's weeds preventive effect is reached 98%.
Comparative example 1
With converting water 750kg/ hectare after 60% butachlor ec 1.2kg/ hectare and the mixing of 25% nitrofen wetting powder 3.75kg/ hectare, in after planting 5 days even spraying of upland rice on ground, the soil surface humidity, broadcasting back 10 days, 20 days, 40 days investigation weeds in field strain numbers, the result shows grassy weed is prevented and kill off rate 80%, is 72% to other section's weed control rate.
The present invention adopts prescription of the same race, but different consumptions can produce different-effect.As:
Convert water 750kg/ hectare with 60% butachlor ec 2.0kg/ hectare and 25% nitrofen wetting powder 5.25kg/ hectare, in after planting 5 days even spraying of upland rice on ground, the soil humidity, broadcasting back 10 days, 20 days, 40 days investigation weeds in field strain numbers, the result shows that to the grassy weed rate of preventing and kill off be 99%, is 98.2% to other section's weed control rate.
Compare with relevant comparative example, effect of the present invention is obvious, is the technology of present a kind of comparative maturity.Institute of the present invention with medicament adopts the commercial goods, and the hydromining clear water is existing with now converting.Adopt the present invention to multiple annual gramineous weed, broad leaved weed, Chenopodiaceae, Amaranthaceae, Euphorbiaceae, jealous woman slurry section, Convolvulaceae weeds are had special efficacy.The weeds such as flat stalk deer grass, Sagittaria pygmaea, cusp flower, water starwort Procumbent Falsepimpernel, Herba Ammanniae Bacciferae, careless dragon, rhizoma alismatis, numerous thin silk fabric, four leaf duckweed carp intestines, Chinese celery, sedge, najas marina, water silk floss that barnyard grass grass, moleplant seed, ditch millet, water sand-grass, Monochoria vaginalis, Drilgrass, difformed galingale herb, firefly Lin, nodularization alkali grass, sunshine, the despot stroked grass, fescue, cyperus iria, seed germination there is special efficacy.To grass family and sedge weed is efficient reaches more than 99%, efficient more than 98% to other section weeds.
Claims (5)
1. a upland rice is broadcast the preceding weeds in field chemical control agent of back bud, it is characterized in that: think its missible oil 2.25～6.0kg/ hectare or 25% nitrofen, 5.25～11.25 kg/ hectares by containing 12% farming, as above contain 60% butachlor, 1.5～4.5kg/ hectare and form prescription.
2. according to the described agent for preventing and eliminating of claim 1, it is characterized in that: described nitrofen is wetting powder or milk powder.
3. according to the described agent for preventing and eliminating of claim 1, it is characterized in that: described farming is thought its missible oil and be can be 25% concentration, and consumption is 1.0～3.0kg/ hectare.
4. broadcast the application process of weeds in field chemical control agent before the bud of back according to the described upland rice of claim 1 for one kind, it is characterized in that: convert the water yield to 750～1200kg/ hectare after above-mentioned prescription is mixed, fully sparge soil surface behind the mixing, used in after planting 3～10 days in upland rice.
5. according to the described agent for preventing and eliminating of claim 2, it is characterized in that: rainy day or face of land humidity are used the minimum of the water yield, and arid weather is used the highest limit of the water yield, and medicament is now with now converting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99113205 CN1286027A (en) | 1999-08-27 | 1999-08-27 | Pre-emergence chemical herbicide for early rice field after sowing and its application method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99113205 CN1286027A (en) | 1999-08-27 | 1999-08-27 | Pre-emergence chemical herbicide for early rice field after sowing and its application method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1286027A true CN1286027A (en) | 2001-03-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 99113205 Pending CN1286027A (en) | 1999-08-27 | 1999-08-27 | Pre-emergence chemical herbicide for early rice field after sowing and its application method |
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| CN (1) | CN1286027A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103766355A (en) * | 2014-01-03 | 2014-05-07 | 丹东农业科学院稻作研究所 | Special weeding method for paddy rice and upland rice by direct seeding |
| CN111616145A (en) * | 2020-06-02 | 2020-09-04 | 安徽喜田生物科技有限公司 | Weeding composition containing trifluralin, butachlor and oxadiazon |
-
1999
- 1999-08-27 CN CN 99113205 patent/CN1286027A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103766355A (en) * | 2014-01-03 | 2014-05-07 | 丹东农业科学院稻作研究所 | Special weeding method for paddy rice and upland rice by direct seeding |
| CN103766355B (en) * | 2014-01-03 | 2016-12-07 | 丹东农业科学院稻作研究所 | A kind of special herbicidal methods of floods and droughts direct sowing of rice |
| CN111616145A (en) * | 2020-06-02 | 2020-09-04 | 安徽喜田生物科技有限公司 | Weeding composition containing trifluralin, butachlor and oxadiazon |
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