CN104012347A

CN104012347A - Method for preventing fusarium oxysporum schlecht

Info

Publication number: CN104012347A
Application number: CN201410273521.4A
Authority: CN
Inventors: 闻献
Original assignee: Nanjing Mai Side Catering Management Co Ltd
Current assignee: Nanjing Mai Side Catering Management Co Ltd
Priority date: 2014-06-19
Filing date: 2014-06-19
Publication date: 2014-09-03

Abstract

The invention discloses a method for preventing fusarium oxysporum schlecht. The method for preventing the fusarium oxysporum schlecht includes the following steps: (1) ploughing soil around albizzia julibrissin in winter each year, and infusing pesticide liquid containing sterilization medicaments in the soil; (2) whitening the portions, close to the ground, of trunks; (3) spraying the sterilization medicaments on the albizzia julibrissin in April or May of the next year, and meanwhile scrapping the diseased portions; (4) repeatedly executing the step (1) to the step (3) for three to four years. The method is adopted in the places where the fusarium oxysporum schlecht easily comes on, the fusarium oxysporum schlecht can be obviously reduced in the third year, and the method is simple, practicable and easy to master and popularize.

Description

A kind of method of preventing and treating of silk tree fusarium wilt

Technical field

The present invention relates to control of plant disease field, refer more particularly to a kind of method of preventing and treating of silk tree fusarium wilt.

Background technology

Silk tree (Albizia julibrissin Durazz.), has another name called velvet flowers tree, and silk tree is joyous.Pulse family, albizzia plant.Because opening the therefore named silk tree of silk tree daytime, silk tree is ornamental plants.

Silk tree fusarium wilt is a kind of systemic infectious disease, is the most serious disease to silk tree.This disease occurrence probability is larger, and seedling and finished product tree are all affected.Wherein, 3 ~ 5 years raw trees the most easily suffer from fusarium wilt and onset speed is fast.In addition, the weak plant of some vitality is affected by this disease, easily dead.The impact of silk tree fusarium wilt climate condition, soil property and physical features, planting environment and Planting management.High humidity, morbidity in rainy season are seriously; Soil property is glued weight, hypsography low-lying, impeded drainage, chaor susceptible disease; The wound causing in the management processes such as transplanting or pruning, can increase fusarium infection chance.After seedling catches an illness, blade flavescence before this, then rhizome base portion deliquescing, normal appearance lodges, and last complete stool is withered.Strain is caught an illness, and symptom appearred in 1 ~ 2 branch before this, and the blade on sick branch is wilted sagging, and leaf look is light green or faint yellow, withered coming off of later stage, and subsequent section branch starts to dry up, and progressively expands to whole strain, to dead.Section trunk section, a visible whole circle variable color ring, usage tree root section is brown or pitchy.

Silk tree Pathogen of Fusarium Wilt is Deuteromycotina, a pathological form for the Fusarium oxysporum of Fusarium.Pathogen survives the winter in diseased plant or with chlamydospore, mycelium with mycelium in soil, and saprophytic ability is strong, can in soil or invalid body, survive for many years.Pathogen can be invaded from root system of plant wound, with branches and leaves and the trunk morbidity of water conduction successor acrial part, also can invade from the wound of acrial part, spreads up and down morbidity at intrusion mouth.Infect morbidity since May, 8-9 month enters onset peak, stops morbidity October.The hole skin place swelling of onset peak period disease portion is broken and is produced pink conidium heap, and conidium borrows wind and rain to propagate, and the pathogen in soil is borrowed and irrigates or rainfall runoff is propagated.This germ is weak parasite, the weak generation that is conducive to disease of tree vigo(u)r, and soil glues that weight, impeded drainage, soil layer are barren, extensive management, causes tree vigo(u)r weak, increases the weight of the generation of disease.

The invasion and attack that prevent and treat difficult point and be how to control germ of silk tree fusarium wilt, at present for still there is no the well method of solution.

Summary of the invention

For solving the problems of the technologies described above, the invention provides a kind of method of preventing and treating of silk tree fusarium wilt, its technical scheme adopting is as follows:

The method of preventing and treating of silk tree fusarium wilt, its step adopting is as follows:

Step 1: in annual winter, the soil around silk tree is turned over, poured into the liquid medicine that contains bactericidal agent;

Step 2: whitewash near the position on ground at trunk;

Step 3: silk tree is carried out the sprinkling of bactericidal agent, sick position struck off simultaneously in four Maies of the coming year;

Step 4: step 1 to three repetition three to four years.

Bactericidal agent be in 300 times of liquid of 35% Baijunling wetting powder, 50 times of liquid of 40% asomate wetting powder, 200 times of liquid of 25% furalaxyl missible oil or 300 times of liquid of 40% pcnb pulvis any.

In step 3, the number of times of spraying agent is three times, every minor tick one week.

Whitewash used white-out agent formula for 8 parts of quicklimes, 2 parts of salt, 5 parts of Cosans, 35 parts, water.

The method of striking off is that the bark of ill part is cut off.

In the silk tree fusarium wilt more place of falling ill, adopt the method, can reduce significantly morbidity in the 3rd year, the method is simple, easily grasps and promotes.

Embodiment

Below in conjunction with agricultural and forestry production practice, specifically set forth the implementation procedure of the inventive method.

The the preventing and treating main points and be how to control germ, conventional method is all started with from degerm of silk tree fusarium wilt, and control can not continue, and there is no good effect for the blocking-up aspect of germ.The present invention adopts four steps, with the implementation process circulating repeatedly, reaches the object of final control germ.

Annual March in November in winter-coming year, the sick branch that serious silk tree occurs for fusarium wilt gathers and concentrates and burn processing, its surrounding soil is turned over, when turning over, must not note and injure rhizome, after turning over, pour into bactericidal agent, bactericidal agent can for be in 300 times of liquid of 35% Baijunling wetting powder, 50 times of liquid of 40% asomate wetting powder, 200 times of liquid of 25% furalaxyl missible oil or 300 times of liquid of 40% pcnb pulvis any.

Trunk is whitewashed, and winter, trunk whitewashing both can reduce because of the trunk injury that winter, day and night temperature caused greatly, can eliminate again the insect surviving the winter in the gap of bark.But in the method, the main purpose of whitewashing is that blocking-up germ is upwards spread by soil, therefore in original white-out agent formula, improve, it is exactly the content that increases salt specifically, and the formula of its concrete white-out agent using is 8 parts of quicklimes, 2 parts of salt, 5 parts of Cosans, 35 parts, water.

Four Maies in the coming year are carried out the sprinkling of bactericidal agent to silk tree, the situation that in rainy season, fusarium wilt occurs due to silk tree is serious, therefore should within one month, carry out this work at rainy season set, the number of times that medicament sprays is more than three times best, every one week of minor tick.

Find that there is the disease tree of silk tree fusarium wilt, will strike off for sick position, strike off and adopt artificial method to carry out, directly with cutter, sick position is cut off, the bark cutting off is concentrated and is burnt processing.

Carry out the while at said method, carry out daily liquid manure maintenance for silk tree.Add up in 7-8 silk tree with 30 age of trees, being 50% at the incidence of disease of silk tree fusarium wilt in 2010, after using this method, is 10% to the incidence of disease of silk tree fusarium wilt in 2013, the incidence of disease reduces greatly, and the method is adapted at carrying out in daily park maintenance large-area popularization.

Claims

1. the method for preventing and treating of silk tree fusarium wilt, its step adopting is as follows:

Step 2: whitewash near the position on ground at trunk;

Step 4: step 1 to three repetition three to four years.

2. a kind of method of preventing and treating of silk tree fusarium wilt according to claim 1, its bactericidal agent be in 300 times of liquid of 35% Baijunling wetting powder, 50 times of liquid of 40% asomate wetting powder, 200 times of liquid of 25% furalaxyl missible oil or 300 times of liquid of 40% pcnb pulvis any.

3. the method for preventing and treating of a kind of silk tree fusarium wilt according to claim 1, in its step 3, the number of times of spraying agent is three times, every minor tick one week.

4. the method for preventing and treating of a kind of silk tree fusarium wilt according to claim 1, whitewashes used white-out agent formula for 8 parts of quicklimes, 2 parts of salt, 5 parts of Cosans, 35 parts, water in its step 2.

5. the method for preventing and treating of a kind of silk tree fusarium wilt according to claim 1, the method for striking off in its step 3 is that the bark of ill part is cut off.