CN103719153B

CN103719153B - A kind of method of preventing and treating banana blight

Info

Publication number: CN103719153B
Application number: CN201310714364.1A
Authority: CN
Inventors: 罗惠华; 钟少宗
Original assignee: Guangxi University
Current assignee: Guangxi University
Priority date: 2013-12-19
Filing date: 2013-12-19
Publication date: 2015-10-21
Anticipated expiration: 2033-12-19
Also published as: CN103719153A

Abstract

The present invention relates to a kind of method of preventing and treating banana blight, with 0.05-0.3mg/L methyl α-naphthyl acetate, 0.2-0.3% borax solution and 2-6%MgSO ₄nutrient solution drenches stem root, 600-800ml/ strain, and yellow leaf removing jaundice turns green rear every 8-12 days and drenches 300-500ml/ strain again, 2-3 time altogether; After illness is improved, with 0.2-0.3% borax solution and 2-6%MgSO ₄within the every 15-20 of nutrient solution days, drench stem root, 300-500ml/ strain, 5-8 time altogether.No longer fall ill after making 2-3, also can use fertiliser containing magnesium and boron fertilizer to every strain banana soil.The present invention according to the morbidity internal cause of banana blight, can prevent and treat banana blight effectively, makes disease leaf removing jaundice turn green quickly, improves output, and can continue 2-3 and no longer fall ill.

Description

A kind of method of preventing and treating banana blight

Technical field

The present invention relates to banana disease prevention techniques field, specifically a kind of method of preventing and treating banana blight.

Background technology

Banana blight (Banana Fusarium Wilt) is also known as Panama disease, yellowtop, research of fusarium wilt disesase of banana, first found in Australia in 1874,1890 at Central America happening and prevelence, 1935-1939 South America is 40,000 hectares, Bing Huijiao garden therefore, there is this disease in China nineteen sixty Guangxi Saigon any of several broadleaf plants, after this provinces and regions such as Hainan, Taiwan, Guangdong, Yunnan have large area to fall ill, the incidence of disease is 3.2%-26%, serious in 60%, often cause crushing loss, peasant is referred to as " cancer " of banana.

Since the dawn of human civilization, people generally believe that this disease is for contagious disease, and pathogen is Fusarium oxysporum, has found that there is four biological strains at present, No. a kind is worldwide distribution, and No. 4 microspecies infect have banana and plantain, comprise the ivory any of several broadleaf plants other microspecies being had to resistance, endanger the most serious, and think from root and invade, to xylem development, blocking vascular bundle produces toxin and downright bad, also thinks that nursery stock, flowing water, soil, farm implements, personnel walk about propagation of carrying disease germs.Onset condition is sand or the sandy loam of soil depletion.The acid soil of pH value less than 6 is beneficial to germ and grows.Location (water capacity >25%) and the season of general, impeded drainage many at rainwater are easily susceptible, and the high-incidence season slightly difference fallen ill in various places, mostly is the annual 7-10 month or the 10-11 month.

Although have a large amount of personnel to carry out the research of this disease at present, not yet work out the specific drug of this disease for the treatment of, 1. liming therefore can only be taked in control to regulate soil acidity (pH value is to 7) to kill nematode, reduce infection process; 2. prevent seedling from carrying disease germs, select disease-resistant variety or without to carry disease germs plantlet in vitro; 3. find that diseased plant blocks lesion, and excavates destruction, and inject glyphosate and kill, burn, or adopt lime or calcium cyanamide disinfection; 4. strengthen cultivation management or carry out crop rotation, according to Taiwan, with paddy rice crop rotation, an annual morbidity can be down to 8.1-17.6% by 30-50%.

Summary of the invention

Technical problem to be solved by this invention is, according to the morbidity internal cause of banana blight, provides a kind of method of preventing and treating banana blight, is aided with the nutritive element of disappearance, and adjustment plant nutrition balance, improves the anti pathologic immunity ability of banana.

The present invention solves the problems of the technologies described above taked technical scheme: a kind of method of preventing and treating banana blight, with 0.05-0.3mg/L methyl α-naphthyl acetate, 0.2-0.3% borax solution and 2-6%MgSO ₄nutrient solution drenches stem root, 600-800ml/ strain, and yellow leaf removing jaundice turns green rear every 8-12 days and drenches 300-500ml/ strain again, 2-3 time altogether; After illness is improved, with 0.2-0.3% borax solution and 2-6%MgSO ₄within the every 15-20 of nutrient solution days, drench stem root, 300-500ml/ strain, 5-8 time altogether.

No longer fall ill after making 2-3, also can use fertiliser containing magnesium and boron fertilizer to every strain banana soil.

Described fertiliser containing magnesium is fused calcium magnesium phosphate, and amount of application is 0.5-3 jin/strain; Described boron fertilizer is borax, and amount of application is 50-100g/ strain.

The present invention according to the morbidity internal cause of banana blight, can prevent and treat banana blight effectively, makes disease leaf removing jaundice turn green quickly, improves output, and can continue 2-3 and no longer fall ill.

Embodiment

Below in conjunction with concrete research process, technical scheme of the present invention is described further.

According to the investigation of inventor in Nanning City, think that banana blight is not contagious disease, reason is as follows:

(1) withered diseased plant institute pumping inhales bud not in spite of illness, can normal growth, before majority grows to and takes out flower bud, just falls ill and show disease when needing a large amount of nutrition and do not supply;

(2) the adjacent plant of diseased plant can not be susceptible, can normal growth, result and high yield, this be strain fat jobs different caused by;

(3) heavy dressing bio-fertilizer, fertilizer area, plant premunition is strong, and can not fall ill or few morbidity, Nanjing banana peasant household as adjacent with lesion, altar Lip river payes attention to using of fertilizer, the few generation of this disease, as seen this disease and nutrition closely related;

(4) barren sand, sandy loam, red earth Huo Laojiao garden, lacking or directed consuming the serious loss causing some element due to some nutritive element, particularly the pregnant flower bud of banana, take out the flower bud phase and do not supply when just locating in a large number to need fertile, Huang Ye is caused to surge, lobus cardiacus pumping difficulty, and wither gradually.Therefore we adopt measure of suiting the medicine to the illness, and make illness slowly disappear and normally yield positive results.

The basic internal cause that banana blight causes a disease according to the serious loss of our Diagnosis of Banana plant magnesium of illness, boron, and the banana living collection investigation sampling in Guangxi University orchard, select six strain plantains, three strains are as experimental group, and remaining three strains (do not process) as a control group.Experimental group May 13 with 0.2-0.3% borax solution+2-6%MgSO ₄nutrient solution drenches stem root, and 700ml/ strain, observed after 7-10 days, Huang Ye gradually removing jaundice turns green, within later every 10 days, drenches 300-500ml/ strain again, also adds 0.05-0.3mg/L methyl α-naphthyl acetate first 2-3 time, to promote root of hair and Nutrient Absorption, illness improves latter 15-20 days once, 8-10 time altogether.

In control group, a strain is withered mid-July, though other two strains take out flower bud, fruit ear is short and small, depauperation, is difficult to obtain product.Three strain bananas of experimental group receive fruit 42.5 jin, 27.2 jin and 25.9 jin respectively at December, split stem and have recovered intact, and a strain false stem cross section vascular bundle more than 90% is intact, and the false stem cross section vascular bundle full recovery of other two strains is normal.

Inventor continues the diseased plant gathered in plantain and Williams banana and carries out Analysis of Nutritive Composition diagnosis, and result is as shown in table 1.

Table 1 banana blight leaf nutrition composition diagnostics table

As known from Table 1, the content of magnesium in the fusarium wilt blade of plantain and Boron contents are all lower than critical value, and the content of magnesium in the fusarium wilt blade of Williams banana is lower than critical value, and Boron contents lacks.This diagnostic result further illustrates technical scheme that the present invention takes and banana blight is suited the medicine to the illness completely.

Although root outer spraying can supplement the nutrients fast, make to nourish and grow and normally carry out, fertilizer efficiency is lasting, needs annual pouring to execute and remedies, to no longer fall ill after 2-3, must be noted that fertilizing soil, application of organic fertilizers and green manure etc., improving soil organic matter content.Also magnesium boron fertilizer be can execute to every strain banana soil, 0.5-3 jin/strain fused calcium magnesium phosphate and 50-100g/ strain borax, soil testing and fertilizer recommendation and the principle by product fertilising accomplished as far as possible.

Claims

1. prevent and treat a method for banana blight, it is characterized in that, with 0.05-0.3mg/L methyl α-naphthyl acetate, 0.2-0.3% borax solution and 2-6%MgSO ₄nutrient solution drenches stem root, 600-800mL/ strain, and yellow leaf removing jaundice turns green rear every 8-12 days and drenches 300-500mL/ strain again, 2-3 time altogether; After illness is improved, with 0.2-0.3% borax solution and 2-6%MgSO ₄within the every 15-20 of nutrient solution days, drench stem root, 300-500mL/ strain, 5-8 time altogether.

2. the method for control banana blight according to claim 1, is characterized in that, within the 2nd year and the 3rd year, uses fertiliser containing magnesium and boron fertilizer to every strain banana soil.

3. the method for control banana blight according to claim 2, is characterized in that, described fertiliser containing magnesium is fused calcium magnesium phosphate, and amount of application is 0.5-3 jin/strain; Described boron fertilizer is borax, and amount of application is 50-100g/ strain.