What medicine is used for rotten roots of cabbage?

question 1: what medicine should be used to prevent the root rot of Chinese cabbage when planting? May be harmed by pests and diseases; It can be controlled by the following agents: 35% chlorantraniliprole dispersible granules 6~15 times, 52.25% cyanogen? 1,-1,5 times of chlorpyrifos EC, 8-1, times of 48% chlorpyrifos EC, 7,5-1, times of 5% emamectin benzoate microemulsion, 3, times of 1% bifenthrin EC, 2, times of 2% fenpropathrin EC, 2,-3, times of 9.5% fenazaquin EC, and 11. 5% flufenoxuron EC 1 ~ 2 times, 73% propargite EC 25 ~ 3 times, 1.8% avermectin EC 2 ~ 3 times, 1% compound liuyangmycin EC 1 times, 5% hexythiazox EC 2 times, 7% imidacloprid wettable powder 75 ~ 1 times. 1-15 times of phoxim EC, 5-8 times of .5% berberine aqueous solution, 3 times of 25% propiconazole EC, 1 times of 8% complex mancozeb wettable powder, 1-15 times of 7% pyrimethanil wettable powder and 25 times of 5% azoxystrobin dry suspension. 4~8 times of thiram wettable powder, 3~5 times of 7% tebuconazole soluble powder, 3% benzoyl chloride? Propiconazole EC 3 times, 77% copper hydroxide wettable powder 4~6 times, 15% mixed amino acid copper? Zinc? Manganese? Magnesium aqua is 3 times, and one or two of the above chemicals can be mixed with 5% chlorobromoisocyanuric acid soluble powder 15 times, .15% natural brassinolide emulsifiable concentrate 6-1 times, green wind 95 6 times, and Kebao plant eugenol 15-3 times (transplanting crops, phytotoxicity and fertilizer damage, freezing injury, waterlogging injury, strong roots and strong seedlings).

question 2: what medicine is used for rotten roots of Chinese cabbage? The rotten roots of Chinese cabbage may be caused by too much water; Or the temperature is too high; There is also root rot. The first two symptoms should be well watered, and the latter condition can be irrigated with streptomycin+Prick+nutrient solution < P > Question 3: What medicine is used for rotten roots of Chinese cabbage? The rotten roots of Chinese cabbage may be caused by too much water; Or the temperature is too high; There is also root rot. The first two symptoms should be well watered, and the latter condition can be irrigated with streptomycin+Prick+nutrient solution < P > Question 4: How to deal with the rotten roots of Chinese cabbage? There are several diseases that can cause rotten roots of Chinese cabbage, so you'd better describe them in detail.

Fusarium wilt of Chinese cabbage can cause root rot, black rot and root rot.

The most common root rot of Chinese cabbage is soft rot of Chinese cabbage!

Question 5: What medicine is used for root rot of Chinese cabbage? The root rot of Chinese cabbage may be caused by excessive water; Or the temperature is too high; There is also root rot. The first two symptoms should be well watered, and the latter condition can be irrigated with streptomycin+Prick+nutrient solution < P > Question 6: What is the rotten root of Chinese cabbage? The rotten root of Chinese cabbage is a common problem in the growth process of Chinese cabbage. The main causes of rotten root of Chinese cabbage are retting caused by physiological diseases and rotten root caused by bacterial soft rot. The above two diseases are related to too much rain, high soil humidity and high and low temperature.

1. Root rot caused by Chinese cabbage retting

1. Causes of root retting: Chinese cabbage is a semi-cold-tolerant vegetable, which likes mild and cold climate, but can't tolerate heat and cold, while Chinese cabbage likes humidity, but it can't tolerate waterlogging. Under the conditions of high temperature, hot weather or low temperature and cold weather, in case of continuous rain or flood irrigation, Chinese cabbage will remain in a stagnant state for a long time, which will lead to tissue necrosis and root retting of Chinese cabbage due to lack of oxygen. In the early growth stage of Chinese cabbage, due to the high outside temperature, high-temperature retting roots are easy to appear; In the late growth stage of Chinese cabbage, with the decrease of outside temperature, low-temperature retting roots are easy to appear.

2. symptoms of root retting: the root of Chinese cabbage is rotted, the overground part is wilted, the leaves are yellow, and the tree is seriously dead.

3. Preventive measures:

① Land selection. Choose a plot with high terrain and good drainage for sowing or planting, so as to avoid waterlogging and root retting.

② shade properly. In the early growth stage of Chinese cabbage, in case of high temperature weather, sunshade net can be used to shade properly to prevent high temperature retting.

③ intertillage and loosen the soil. Through intertillage, soil aeration is improved and aerobic microbial activities are promoted; The intertillage can also adjust the soil moisture condition, which is beneficial to root extension; In the late growth stage of Chinese cabbage, intertillage is also beneficial to increase the ground temperature.

④ control the soil moisture. Drainage in time after rain to prevent rain and waterlogging. When the soil is short of water and needs to be watered, the amount of water should be appropriate, and it is forbidden to flood with water, so as not to cause root retting caused by accumulated water.

2. Rotten roots caused by soft rot of Chinese cabbage

1. Symptoms: Soft rot of Chinese cabbage generally occurs in the rhizome and petiole at the base. The diseased part of petiole is waterlogged, and the outer leaves wilt due to dehydration, which can be recovered at first in the morning and evening. With the development of the disease, they will not recover, and the outer leaves will lodging to expose the bulbs. The heart tissue and petiole base of the seriously diseased rhizome are completely rotten, full of yellow sticky substances, emitting a special stench and causing the whole plant to rot.

2. Pathogenic factors: generally, it is more serious in warm autumn years. Low-lying land with serious water accumulation is prone to disease. In case of high temperature, rainy and humid weather, the diseases of Chinese cabbage are easy to occur seriously. Excessive nitrogen fertilizer, plant growth in vain, and plant injury or mechanical injury are prone to diseases.

3. Preventive measures:

① Agricultural measures. Avoid planting on low-lying and sticky plots; Choose fields with Gramineae and Leguminosae as the previous crops to avoid continuous cropping of solanaceae, cucurbits and cruciferous vegetables; Leveling the land, clearing the furrows, and adopting high border cultivation; Implement furrow irrigation to prevent flooding; Be careful in farming operations to avoid causing plant trauma.

② chemical control. At the initial stage of the disease, the commonly used drugs are 3 ~ 4 times of 72% agricultural streptomycin sulfate soluble powder, 4 times of neophytomycin, 35 times of 14% cuprammonia water solution and 7 ~ 75 times of 47% Garenon wettable powder. Spray once every 7 ~ 1 days, and spray for 2 ~ 3 times continuously.

Question 7: Why does Chinese cabbage suffer from root rot and soft rot? The pulp tissue at the petiole, stem or rhizome is ulcerated, and a grayish brown sticky substance flows out, which has a bad smell. The outer leaves of the diseased plant are limp and flat on the ground, which can cause the whole plant to die. The pathogen is bacteria, and the field is spread by running water. Drain water in time after rain and remove diseased plants before irrigation to reduce the spread of germs. The susceptible plants of soft rot of Chinese cabbage generally die, which is harmful, so chemical control should be carried out in the diseased fields.

control method: germicidal carbendazim (chlorobromohydrouric acid) is mixed with agricultural streptomycin, and the stem base is sprayed or irrigated with roots. At the beginning of the disease, the solution of agricultural streptomycin 15-2mg/kg or neophytomycin 2mg/kg can be used to spray the diseased Chinese cabbage and its surrounding petioles, so as to make the liquid medicine flow into the Chinese cabbage as much as possible, generally once every 7-1 days, and continuously for 2-3 times.

question 8: Chinese cabbage only rotted, but what medicine should be used if the root didn't rot? Spraying fungicides is like

Question 9: What medicine is best for root rot of Chinese cabbage? Before the onset of root rot, use one of the following chemicals to spray or irrigate the plants: 5% carbendazim wettable powder 6 times storage solution; 5 times of 5% thiophanate-methyl wettable powder; 5O times solution of 7% thiophanate methyl wettable powder; 75% chlorothalonil wettable powder 6O times solution; Take medicine once every 7-1 days, and take medicine for 3-4 times continuously < P > Question 1: About 15 days before when to prevent Chinese cabbage from rotting roots.