CN103250604A - Chemical weeding method for konjac - Google Patents
Chemical weeding method for konjac Download PDFInfo
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- CN103250604A CN103250604A CN2013101124685A CN201310112468A CN103250604A CN 103250604 A CN103250604 A CN 103250604A CN 2013101124685 A CN2013101124685 A CN 2013101124685A CN 201310112468 A CN201310112468 A CN 201310112468A CN 103250604 A CN103250604 A CN 103250604A
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- konjaku
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Abstract
A chemical weeding method for konjac includes: adding 25-35kg of water to 250-300ml of 30% isopropylamine salt of N-glycine per mu to prepare weed killer, and spraying the weed killer to remove weeds from a konjac seeding period to a harvesting period; and treating the soil from the konjac seeding period to seedling emergence, namely adding 30kg of water to 100ml of 50% acetochlor emulsifiable concentrate per mu to prepare mixture and spraying the mixture. The chemical weeding method for konjac has the advantages that residue of chemical component on konjac is reduced effectively and weeds in fields can be killed with no harm on the konjac.
Description
The method field
The present invention relates to the plant pest method for integrated control, particularly this konjaku chemical weed control method.
Background method
Konjaku is very popular health food, is unique main economic crops that Glucomannan can be provided in a large number, and still, China's konjaku industry is subjected to the serious threat of weeds for a long time.
The one, weeds have a strong impact on konjaku output.Weeds and konjaku win honour for, strive water, strive fertilizer.The field piece that weeds are taken place generally loses konjaku output 20-30%, serious loss 70-80%, even total crop failure.
The 2nd, after the weeds harm, the konjaku performance number descends, and what have loses commodity value fully.
Three weeds are vectors of the multiple damage by disease and insect of crops, and the field piece ventilation and penetrating light poor performance of weeds takes place, and the konjaku damage by disease and insect takes place heavy.
The 4th, weeds have a strong impact on the farming operation.
The 5th, weeds harm human and livestock health.
The 6th, the artificial weeding difficulty is big, weak effect, cost height, and the konjaku Root Distribution is horizontal distribution in shallow topsoil simultaneously, and the root-like stock that takes place on the bulb and fibrous root are horizontal trend more, and be very tender crisp, easily damage.In konjaku cultivation production process, the artificial weeding on konjaku ground and diseases prevention are double-edged swords, and artificial weeding very easily makes the injured konjaku that causes of root system fall ill in a large number, reduces output, are prone to " the dead seedling of grass is completely cured " phenomenon.
Therefore, adopting chemical weed control is to eliminate the saving of labor of weeds in field, laborsaving, economical, high-efficiency method at present, be subjected to very much the welcome of taro farming, but chemical weed control one is the drug residue height, the 2nd, the chemical herbicide of high concentration kills the konjaku seedling or cause the situation of damage in the use meeting of konjaku seedling.
Summary of the invention
Method problem to be solved by this invention provides can effectively reduce konjaku chemical analysis residual quantity, except low pollution to underground water and soil earth, can kill weeds in field but a kind of chemical subtraction grass method that can not damage konjaku.
Be to solve the said method problem, the method applied in the present invention scheme is: add 25 to 35 kilograms of herbicide sprays of making of water for 250-300 milliliters and cut weeds from being seeded between harvest time every mu of usefulness 30% glyphosate isopropyl amine salt aqua at konjaku; Need soil is handled before emerging in the konjaku sowing, concrete method side is that 100 milliliters of every mu of usefulness 50% acetochlor ecs add 30 kilograms of sprayings of water.
Further, adding 30 kilograms of weed killer herbicides of making of water in 250-300 milliliters in 30% glyphosate isopropyl amine salt aqua is optimal case.
The weed killer herbicide preferred version also comprises: add in 25 to 35 kilograms in water or 30 kilograms of weed killer herbicides of making in 250-300 milliliters in 30% glyphosate isopropyl amine salt aqua and add the washing powder that 5-10 restrains.
The choose opportunities of chemical subtraction grass, when being stabilized in 12 ℃-15 ℃, temperature sows, konjaku after planting adds 25 to 35 kilograms of weed killer herbicides of making of water or adds 25 to 35 kilograms in water with 250-300 milliliters in 30% glyphosate isopropyl amine salt aqua with 250-300 milliliters in 30% glyphosate isopropyl amine salt aqua to using between leaf stretching period, and adds the weed killer herbicide that washing powder that 5-10 restrains is made.
The best opportunity of chemical subtraction grass is selected, after the konjaku compound leaf is unearthed, scale surrounds petiole base, old scale and decays, when new scale is extracted five or six out from inner face again, adds 25 to 35 kilograms of weed killer herbicides of making of water or add 25 to 35 kilograms in water and add the weed killer herbicide that washing powder that 5-10 restrains is made with 250-300 milliliters in 30% glyphosate isopropyl amine salt aqua with 250-300 milliliters in 30% glyphosate isopropyl amine salt aqua.
Further, comprise with content in the chemical weed control method: spray herbicide is sprayed onto on the weeds cauline leaf with wanting uniform and delicate and/or the spray herbicide time is avoided the megathermal period at noon and/or notes climatic variation, and spray herbicide was met rain in 6 hours, in time resprayed after rain stops.
Difficult point of the present invention is, selects a kind ofly can effectively kill weeds between konjaku and chemical reagent kind, concentration less to the konjaku injury or that do not injure, when sprays and can reduce chemical reagent the residual of konjaku plant and reduce pollution to underground water and soil.
Weed killer herbicide has inner sucting conduction type, contact killing type.Inner sucting conduction type herbicide glyphosate serial herbicide should be selected in konjaku ground as far as possible, and 7-10 days weeds begin chlorosis, flavescence, withered behind its spray medicine.In having, inhales glyphosate conductivity, after being absorbed by blade, be transmitted to each position in the weeds body, root system there is bigger lethal effect, so the lasting period after the weeding is longer, and it is selective to konjaku, safer, find in the comparative trial of land for growing field crops that particularly adding 25 to 35 kilograms in water with 250-300 milliliters in 30% glyphosate isopropyl amine salt aqua makes weed killer herbicide and carry out the cauline leaf processing in the konjaku field, compare existing glyphosate herbicidal, glyphosate concentration has reduced by 60 30 percent to percent among the present invention, under this concentration, the konjaku seedling is not injured, but herbicidal effect does not have the high concentration herbicidal effect good, need repeatedly to spray repeatedly the effect that just can reach weeding, spraying number of times too much can pollute underground water and soil again, how to solve the low problem that is not directly proportional with the sprinkling number of times of concentration, it is a practicality difficult problem always, the inventor is through the own long-time field of combination practical experience, adopt a kind of method that cooperates the low concentration Gyphosate herbicice of anticipating, reduce the sprinkling number of times simultaneously with the Gyphosate herbicice efficient that improves low concentration, its difficulty is that konjaku is basic and weeds are synchronous from planting to during being unearthed, selecting improperly, processing method can injure the konjaku seedling simultaneously, through field experiment contrast repeatedly, the inventor find out a kind of to weeds injuries but to konjaku without limits or the method for few injury, unearthed preceding every mu of usefulness 50% acetochlor ec of konjaku seedling adds 30 kilograms of sprayings of water for 100 milliliters to be handled soil, can effectively reduce the quantity that weeds are unearthed, postpone the occurrence in peak period of weeds, shorten the harm time of weeds, substantially there is not injury for konjaku simultaneously, be used with the weed killer herbicide of low concentration among the present invention, needing only spray herbicide one secondary in vegetative period at konjaku can effective weeding.
In 250-300 milliliters in 30% glyphosate isopropyl amine salt aqua, add 25 to 35 kilograms in water, and add the washing powder of 5-10 gram, chemicals is better adhered on the blade, improve the herbicide action of chemical herbicide.
Konjaku after planting adds water in 250-300 milliliters in the 30% glyphosate isopropyl amine salt aqua and cuts weeds for 25 to 35 kilograms to using by every mu between leaf stretching period, after planting often weeds are a lot of to leaf stretching period for konjaku, particularly the annual konjak plant is less, be less competitive than weeds, the this moment of weeding in time can be guaranteed konjaku output.
After the plantation of konjaku kind bulb, contained nutriment decomposes for growth required rapidly, promotes root of hair, rudiment and new bulb to form, and its weight subtracts 1/60 every day approximately, after 2 months, finish old bulb " changing head ", plant bulb and disappear, indicate that this phase finishes, the konjaku kind bulb decay later stage, leaf is unearthed, and certain growth is arranged, so can claim that again this phase is the seedling phase.New bulb forms and slowly growth during this period, new bulb fresh weight of phase only accounts for 4.5% of the time of infertility " to change head ", dry matter weight only accounts for 5%-7%, after also the konjaku compound leaf is unearthed just, scale surrounds petiole base, old scale is decayed, when new scale is extracted five or six out from inner face again, when namely entering weed growth animated period (4-6 leaf), spray in 250-300 milliliters in the 30% glyphosate isopropyl amine salt aqua this moment and add 25 to 35 kilograms of weedings of water, weeds are launched with the reagent contact-making surface also bigger on growth animated period (4-6 leaf) blade face fully, this moment, the spray herbicide effect was better, can also reduce chemical herbicide residual in konjaku.
Embodiment
Choosing ground, whole select that soil layer is deep, ground moistening, draining well, be rich in the sandy loam of humus, optional sylvan life is planted than shaded place side, Yu Dongqian ploughs 30cm, put in order and carefully rake, choose stone, weeds root, apply 50 kilograms in cake fertilizer and 3000 kilograms of decomposed dungs or compost in conjunction with ploughing every mu, make wide about 1.3 meters high furrow, hold the drain ditch between furrow successfully.
Plantation: sow when the back temperature that shows money or valuables one carries unintentionally in annual 3-4 month is stabilized in 12 ℃-15 ℃, dig the cave program request for 30 centimetres X25 centimetre by distance between rows and hills.After planting need soil is handled before emerging at konjaku, concrete method side is that 100 milliliters of every mu of usefulness 50% acetochlor ecs add 30 kilograms of sprayings of water, can reduce the incidence of weeds effectively less.
Field management: after the konjaku compound leaf is unearthed, scale surround petiole base, old scale decay, when newly scale is extracted five or six out from inner face again, when namely entering weed growth animated period (4-6 leaf), use 250-300 milliliters in 30% glyphosate isopropyl amine salt aqua to add 30 kilograms of sprayings of water and cut weeds, also can add the washing powder of 5-10 gram; July is used 250-300 milliliters in 30% glyphosate isopropyl amine salt aqua to add 30 kilograms of sprayings of water again and cuts weeds; When the konjaku seedling is unearthed 20-30 centimetre of back height of seedling, impose seed manure for the first time, weeds are being eliminated before, after imposing, can improve by seed manure the output of konjaku greatly, every mu is watered 10 kilograms in 1000 kilograms of night soils or urea, and be that stem tuber forms the phase August, and every mu imposes 2000 kilograms of night soils again.
Field trial;
Konjaku chemical weed control test is carried out in town head mountain range village, Yao Jia shop, Yidu City, 3 mu of soil layers of testing ground area are deep, draining is good, sandy loam, humus content height, Yu Dongqian ploughs 30cm, put in order and carefully rake, choose stone, weeds root, apply 50 kilograms in cake fertilizer and 3000 kilograms of decomposed dungs or compost in conjunction with ploughing every mu, make wide about 1.3 meters high furrow, hold the drain ditch between furrow successfully.
On April 5th, 2011 dug every mu of cave program request, May 30 by 30 centimetres X25 centimetre of distance between rows and hills and waters 1000 kilograms of night soils, August 10 and impose 2000 kilograms of night soils again for every mu, field observation April 5 for the konjaku seedling is unearthed day, scale surrounds petiole base, old scale is decayed, be about May 5 during when new scale is extracted five or six out from inner face again.
Experimental condition: 1 mu of each experimental group floor space, the experimental culture management is consistent.
Check experiment: the 30 kilograms of weed sprays of washing powder+water that restrain with every mu of 30% glyphosate isopropyl amine salt aqua 250-300 milliliters+8 before and after first group, May 5;
Second group, konjaku after planting before emerge 100 milliliters of (April 5) every mu of usefulness 50% acetochlor ecs add 30 kilograms of weed sprays of washing powder+water that every mu of usefulness 30% glyphosate isopropyl amine salt aqua 250-300 milliliters+8 grams before and after soil treatment+May 5 are carried out in 30 kilograms of sprayings of water;
The 3rd group, spray clear water contrast (CK).
Result of the test is: investigation in 30 days behind the medicine, and first group, second group preventive effect is respectively 81.9% and 80.1%; Investigation in 60 days behind the medicine, first group of preventive effect drops to 38.7%; Second group of preventive effect is 98.1%.
Be used in small towns such as pine level ground, Wang Jiafan, Pan Jia gulfs in 2012 konjaku after planting before emerge every mu of usefulness 50% acetochlor ec add the washing powder that soil treatment+250-300 milliliters+5-10 of every mu of 30% glyphosate isopropyl amine salt aqua gram is carried out in 30 kilograms of sprayings of water for 100 milliliters, the method that adds 30 kilograms of sprayings of water is carried out large-area weeding demonstration, and preventive effect is up to more than 95%.
Field trial demonstration shows that said method weeding not only control efficiency is good, and has avoided other weed killer herbicide (as 10% glyphosate with current to paddy rice etc.) to making the phenomenon of deposits yields poisoning; Up to the present detect the konjaku product and contain the glyphosate isopropyl amine salt composition far below 0.1mg/kg, have only about 0.03mg/kg, use second group of test method to carry out weeding, the content of glyphosate isopropyl amine salt composition in konjaku has only about 0.01mg/kg.
Claims (8)
1. konjaku chemical weed control method is characterized in that: add 25 to 35 kilograms of herbicide sprays of making of water for 250-300 milliliters and cut weeds from being seeded between harvest time every mu of usefulness 30% glyphosate isopropyl amine salt aqua at konjaku; Need soil is handled before emerging in the konjaku sowing, concrete method side is that 100 milliliters of every mu of usefulness 50% acetochlor ecs add 30 kilograms of sprayings of water.
2. a kind of konjaku chemical weed control method according to claim 1 is characterized in that: add 30 kilograms in water in 250-300 milliliters in 30% glyphosate isopropyl amine salt aqua.
3. a kind of konjaku chemical weed control method according to claim 1 and 2 is characterized in that: the washing powder that adds the 5-10 gram in described weed killer herbicide.
4. a kind of konjaku chemical weed control method according to claim 1 and 2 is characterized in that: sow when temperature is stabilized in 12 ℃-15 ℃, konjaku is from after planting to using described weed killer herbicide to cut weeds between leaf stretching period.
5. a kind of konjaku chemical weed control method according to claim 1 and 2, it is characterized in that: described konjaku chemical weed control method comprises that also described weed killer herbicide is sprayed onto on the weeds cauline leaf with wanting uniform and delicate.
6. a kind of konjaku chemical weed control method according to claim 1 and 2 is characterized in that: described konjaku chemical weed control method comprises that also the described weed killer herbicide time of spray avoids the megathermal period at noon.
7. a kind of konjaku chemical weed control method according to claim 1 and 2 is characterized in that: described konjaku chemical weed control method comprises that also the described weed killer herbicide of spray meets rain in 6 hours, in time resprays after Ying Zaiyu stops.
8. a kind of konjaku chemical weed control method according to claim 4, it is characterized in that: after the konjaku compound leaf is unearthed, scale surround petiole base, old scale decay, when newly scale is extracted five or six out from inner face again, when namely entering weed growth animated period (4-6 leaf), use the described spraying of cutting weeds to cut weeds.
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| CN2013101124685A CN103250604A (en) | 2013-04-02 | 2013-04-02 | Chemical weeding method for konjac |
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| CN2013101124685A CN103250604A (en) | 2013-04-02 | 2013-04-02 | Chemical weeding method for konjac |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107333795A (en) * | 2017-07-20 | 2017-11-10 | 福建省农业科学院亚热带农业研究所 | A kind of anniversary the method for control of sugarcane garden weeds |
-
2013
- 2013-04-02 CN CN2013101124685A patent/CN103250604A/en active Pending
Non-Patent Citations (1)
| Title |
|---|
| 蔡道辉等: "武陵山区魔芋防病丰产高效栽培技术", 《现代农业科技》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107333795A (en) * | 2017-07-20 | 2017-11-10 | 福建省农业科学院亚热带农业研究所 | A kind of anniversary the method for control of sugarcane garden weeds |
| CN107333795B (en) * | 2017-07-20 | 2021-02-05 | 福建省农业科学院亚热带农业研究所 | Annual preventing and removing method for weeds in sugarcane orchard |
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Application publication date: 20130821 |