CN103719153A

CN103719153A - Method for controlling banana wilt

Info

Publication number: CN103719153A
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: 2014-04-16
Anticipated expiration: 2033-12-19
Also published as: CN103719153B

Abstract

The invention relates to a method for controlling banana wilt. The method comprises the steps of: spraying stems and roots with nutrient solution containing 0.05-0.3mg/L of naphthylacetic acid, 0.2-0.3% of borax solution and 2-6% of MgSO4 for 600-800ml/plant, and after yellow leaves become green, spraying the nutrient solution for 300-500ml/plant and 2-3 times at every 8-12 days; after the disease is improved, spraying the stems and the roots with nutrient solution containing 0.2-0.3% of borax solution and 2-6% of MgSO4 for 300-500ml/plant and 5-8 times at every 15-20 days. In order to control the disease after 2-3 years, magnesium fertilizers and boric fertilizers can also be applied for soil of each banana plant. The method has the advantages that the banana wilt can be effectively controlled according to the internal cause of the banana wilt, and the diseased leaves become green in a faster manner, so that the yield is increased and the disease can be continuously controlled for 2-3 years.

Description

A kind of method of preventing and treating banana blight

Technical field

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

Background technology

Banana blight (Banana Fusarium Wilt) claim again Panama disease, yellowtop, research of fusarium wilt disesase of banana, in 1874, first find in Australia, within 1890, in Central America, occur popular, 40,000 hectares, 1935-1939 South America so Bing Huijiao garden, Saigon, China nineteen sixty Guangxi there is this disease in any of several broadleaf plants, after this there is large area morbidity the provinces and regions such as Hainan, Taiwan, Guangdong, Yunnan, 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 contagious disease, and pathogen is Fusarium oxysporum, has found that there is at present four biological strains, No. a kind is worldwide distribution, and No. 4 microspecies infect have banana and a plantain, comprise the ivory any of several broadleaf plants that other microspecies is had to resistance, endanger the most serious, and think and invade from root, to xylem development, stop up vascular bundle and produce toxin and necrosis, also think nursery stock, flowing water, soil, farm implements, the personnel propagation of carrying disease germs of walking about.Onset condition is sand or the sandy loam of soil depletion.The acid soil of pH value below 6 is beneficial to germ and grows.General location (water capacity >25%) and season many at rainwater, impeded drainage are easily susceptible, and the high-incidence season of various places morbidity is slightly variant, 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 this sick specific drug for the treatment of, therefore in control, can only take 1. liming to regulate soil acidity (pH value to 7) to kill nematode, reduce infection process; 2. prevent that seedling from carrying disease germs, select disease-resistant variety or train seedling without the group of carrying disease germs; 3. find that diseased plant blocks lesion, and excavate 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, adjusts 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, and 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, 2-3 time altogether again; 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.

In order to make no longer to fall ill after 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 can prevent and treat banana blight effectively according to the morbidity internal cause of banana blight, makes quickly disease leaf removing jaundice turn green, 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.

Investigation according to inventor in Nanning City, think that banana blight is not contagious disease, the reasons are as follows:

(1) withered diseased plant institute pumping is inhaled bud not in spite of illness, can normal growth, and majority grows to be taken out before flower bud, needs a large amount of nutrition and just falls ill while not supplying and show disease;

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

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

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

According to the serious disappearance of our Diagnosis of Banana plant magnesium of illness, boron, it is the basic internal cause that banana blight causes a disease, the banana living collection investigation sampling in Bing Guangxi University orchard, select six strain plantains, three strains are as experimental group, and remaining three strains (are not processed) 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 is improved latter 15-20 days once, 8-10 time altogether.

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

The diseased plant that inventor continues to gather in plantain and Williams banana 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 content 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 content lacks.This diagnostic result further illustrates technical scheme and the banana blight that the present invention takes and suits 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 not lasting, needs annual pouring to execute and remedies, if no longer fall ill after taking 2-3, must be noted that fertilizing soil, and application of organic fertilizers and green manure etc., improve soil organic matter content.Also can execute magnesium boron fertilizer to every strain banana soil, 0.5-3 jin/strain fused calcium magnesium phosphate and 50-100g/ strain borax, accomplish soil testing and fertilizer recommendation and the principle of applying fertilizer by product as far as possible.

Claims

1. a method of preventing and treating banana blight, 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, 2-3 time altogether again; 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, every strain banana soil is used to fertiliser containing magnesium and boron fertilizer in the 2nd year and the 3rd year.

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.