CN103636440A - Control method for cucumber downy mildew through medicaments - Google Patents

Abstract

The invention discloses a control method for cucumber downy mildew through medicaments and relates to the technical field of crop disease and pest control. The control method is characterized by comprising a smoke method, a dust method and mist spraying control. The control method is reasonable, convenient to implement and good in effect.

Description

A kind of chemical control method of cucumber downy mildew

Technical field:

The present invention relates to crop pest control technical field, be specifically related to a kind of chemical control method of cucumber downy mildew.

Background technology:

Cucumber downy mildew, is commonly called as " horse race is dry ", " cured leaf ", and seedling stage, strain all can be injured, mainly cause harm blade and stem, and tendril and bennet are injured less.

Downy mildew mainly occurs on blade., originally there is chlorisis spot in morbidity seedling stage on cotyledon, be gradually yellow irregular shape spot, and when moist, the cotyledon back side produces the mould layer of grey black, along with PD, and the very fast flavescence of cotyledon, dried-up.The morbidity of strain phase, begins to show light green color water logging spot on blade, limited by vein, is polygonal, it is filbert that yellow green turns, and later stage scab converges in flakes, and full leaf is withered, by leaf margin, upwards crispaturaed, bear the mould layer of grey black when moist on leaf back scab, when serious, complete stool blade is withered.Disease-resistant variety scab is few and little, and the mould layer of blade back is also sparse.

If processing so not in time tends to cause the large-area damage in the large-area underproduction or soil, so just not only brought economic loss, also destroyed environment.

Summary of the invention:

Technical problem to be solved by this invention is to overcome existing technological deficiency a kind of chemical control method that method is reasonable, implement convenient, respond well a kind of cucumber downy mildew is provided.

Technical problem to be solved by this invention adopts following technical scheme to realize:

A chemical control method for cucumber downy mildew, is characterized in that: comprise following methods,

Method one, smog method: at the initial stage of a disease, every mu of use 45% chlorothalonil smoke 200g, is placed on respectively 4-5 place in canopy,, dying fire is lighted, and closes the smoked 4-6 hour of canopy, and then ventilation, every 5-7 days smoked 1 time, can be used 2-3 time continuously.Run into the cloudy day, spray tpn pulvis or with chlorothalonil smoke fumigation at dusk, every mu of consumption 1kg of dust agent, fumicants 200g;

Method two, soot technique: at the initial stage of a disease, with duster, spray 5% tpn dust agent at dusk, or more than 10% hundred dust agents, or 10% frost prevention spirit dust agent, every mu of each 1kg, every spray in 9-11 days 1 time;

Method three, spraying control: medication immediately after discovery primary infection focus.Conventional medicament has 72% gram to reveal 600-800 times of liquid, 500 times of liquid of 40% synergy metalaxyl, 500 times of liquid of 70% metalaxyl-mn-zn, 72.2% and generally make every effort to overcome 700 times of liquid.Two kinds of medicament mixing results of use are better, and 72% gram is revealed 500 times of liquid of 800 times+80% aliette, 500 times of liquid of 80% 500 times of aliettes liquid+64% Sandofan, and above medicament will be used alternatingly, and mu spraying liquid 60-70 liter, every spray in 7-10 days 1 time.

Beneficial effect of the present invention is: very simple, easy-to-understand of above-mentioned step, and very clear, be applicable to professional plant personnel or common staff's reference and use.And what the usage amount of medicament and medicament and method were all explained is perfectly clear, facilitate like this operation.The inventive method is reasonable, enforcement is convenient, respond well.

Embodiment:

For technological means, creation characteristic that the present invention is realized, reach object and effect is easy to understand, below further set forth the present invention.

A chemical control method for cucumber downy mildew, is characterized in that: comprise following methods,

Method one, smog method: at the initial stage of a disease, every mu of use 45% chlorothalonil smoke 200g, is placed on respectively 4-5 place in canopy,, dying fire is lighted, and closes the smoked 4-6 hour of canopy, and then ventilation, every 5-7 days smoked 1 time, can be used 2-3 time continuously.Run into the cloudy day, spray tpn pulvis or with chlorothalonil smoke fumigation at dusk, every mu of consumption 1kg of dust agent, fumicants 200g;

Method two, soot technique: at the initial stage of a disease, with duster, spray 5% tpn dust agent at dusk, or more than 10% hundred dust agents, or 10% frost prevention spirit dust agent, every mu of each 1kg, every spray in 9-11 days 1 time;

Method three, spraying control: medication immediately after discovery primary infection focus.Conventional medicament has 72% gram to reveal 600-800 times of liquid, 500 times of liquid of 40% synergy metalaxyl, 500 times of liquid of 70% metalaxyl-mn-zn, 72.2% and generally make every effort to overcome 700 times of liquid.Two kinds of medicament mixing results of use are better, and 72% gram is revealed 500 times of liquid of 800 times+80% aliette, 500 times of liquid of 80% 500 times of aliettes liquid+64% Sandofan, and above medicament will be used alternatingly, and mu spraying liquid 60-70 liter, every spray in 7-10 days 1 time.

More than show and described basic principle of the present invention and principal character and advantage of the present invention.The technical staff of the industry should understand; the present invention is not restricted to the described embodiments; that in above-described embodiment and specification, describes just illustrates principle of the present invention; without departing from the spirit and scope of the present invention; the present invention also has various changes and modifications, and these changes and improvements all fall in the claimed scope of the invention.The claimed scope of the present invention is defined by appending claims and equivalent thereof.

Claims (1)

1. a chemical control method for cucumber downy mildew, is characterized in that: comprise following methods,

Method one, smog method: at the initial stage of a disease, every mu of use 45% chlorothalonil smoke 200g, is placed on respectively 4-5 place in canopy,, dying fire is lighted, and closes the smoked 4-6 hour of canopy, and then ventilation, every 5-7 days smoked 1 time, can be used 2-3 time continuously.Run into the cloudy day, spray tpn pulvis or with chlorothalonil smoke fumigation at dusk, every mu of consumption 1kg of dust agent, fumicants 200g;

Method two, soot technique: at the initial stage of a disease, with duster, spray 5% tpn dust agent at dusk, or more than 10% hundred dust agents, or 10% frost prevention spirit dust agent, every mu of each 1kg, every spray in 9-11 days 1 time;

Method three, spraying control: medication immediately after discovery primary infection focus.Conventional medicament has 72% gram to reveal 600-800 times of liquid, 500 times of liquid of 40% synergy metalaxyl, 500 times of liquid of 70% metalaxyl-mn-zn, 72.2% and generally make every effort to overcome 700 times of liquid.Two kinds of medicament mixing results of use are better, and 72% gram is revealed 500 times of liquid of 800 times+80% aliette, 500 times of liquid of 80% 500 times of aliettes liquid+64% Sandofan, and above medicament will be used alternatingly, and mu spraying liquid 60-70 liter, every spray in 7-10 days 1 time.