When planting melon and vegetable seedlings, how to use the agent dipping roots to prevent and con

It is suggested that vegetable farmers should use the root dipping method to prevent and control soil-borne diseases of vegetables before planting seedlings. Since the vegetable seedlings are basically based on the hole plate, the root dipping operation is actually the dipping plate, which is very simple and practical, and the prevention effect is good, which is worth promoting.

Dipping roots has two main functions, one is to protect and promote the growth of the root system, and promote the seedlings to pass the slow seedling stage safely and quickly. Second, it can enhance the resistance of the root system to the adverse environment and harmful bacteria, and prevent the occurrence of diseases in advance.

At present, there are many types of dipping root products sold on the market, and the commonly used pesticides are mainly divided into four categories. <>

One is fungicides.

It is mainly used to prevent and control root diseases. Such as 11% methoxystrobin suspension, 30% benzoxystrobin suspension, 25% pyraclostrobin suspension, 10% azoxystrobin suspension, 30% difenoconazole suspension, 30% oxachlor aqueous agent, Jin Ruxin, refined methoxychlor, fludioxonil, blunt poison 360, etc. In general, it is advisable to choose one with good systemic absorption and a suspension form, which is safe and efficient.

The second is biological agents.

It can improve root activity, promote rooting, improve disease resistance, and inhibit pathogenic bacterial infection. <>

The third is rooting and root-raising products.

It is mainly used to promote rooting, improve root activity and stress resistance.

Fourth, pesticides.

It is mainly used to prevent all kinds of insect pests, including underground pests and repel aphids, whiteflies, mites, etc., such as 70% imidacloprid suspension, 20% nogiridine acetamiprid, 25% thiazinone suspension, insecticides, etc.

Under normal circumstances, the choice of biological bacteria for root dipping agents has greater advantages, longer duration and more effects, but it is necessary to pay attention to the selection of high-quality biological bacteria products and correct use; For soil-borne pests and diseases, and there is no time to take soil disinfection measures after stubble change, it is recommended that vegetable farmers still prefer to dip the roots with pesticides to avoid the root system being infected by pests and diseases; If the vegetable farmer has carried out a stuffy shed during the stubble break, or applied biological bacteria and organic fertilizers, etc., it is more suitable to use biological bacteria to dip the roots. <>

Nowadays, the compound use of pesticides is very common, but every year, many vegetable farmers have pesticide damage due to arbitrary increase of concentration or improper compounding of pesticides, which affects the growth of the root system.

Vegetable farmers should choose the appropriate corresponding agent for mixing according to the actual situation, and the root concentration can be 50% higher than the foliar spray concentration. Root dipping requirements: soak the seedling tray for more than 10 seconds, wait for the root system and substrate to absorb enough medicinal solution, lift the corner of the seedling tray, drench off the excess medicinal solution, and then plant and irrigate.

Seedlings dipped in the liquid medicine should be planted in time, and should not be left overnight before planting.

Finally, we recommend a general-purpose (suitable for planting a variety of melon and vegetable seedlings) dipping root formula: 11% methyl frost pyroxystrobin suspension + 30% 1000 times of oxazole + 500 times of active root promoter.

Dipping medicine to improve survival rate.

Vegetable root irrigation is an effective measure to prevent root diseases, but vegetable farmers must master the correct method, otherwise, not only will they not be able to get the desired effect, but they will also produce ***. Let's take a look at the correct way to do root irrigation with botanicals! The choice of drug should be reasonable:

Choose a fungicide with strong acupuncture and good control effect, and do not blindly use drugs, so as not to delay the timing of prevention and control, and reduce waste as much as possible. The concentration of application should be appropriate. Fungicides should be mixed with amino acids, liquid fertilizers, or hormones to promote root development as much as possible.

The concentration of the liquid drug should not be higher than 1500 times that of the liquid to prevent high concentrations of liquid drug in the soil around the roots of vegetables and cause plant toxicity.

Soil organisms must take into account that the selected fungicide must not disrupt the biological population and ecological balance in the soil after application to the soil. For sheds where chemical fertilizers are used, try not to use fungicides to irrigate the roots to prevent diseases, so as not to kill the beneficial microorganisms in the fertilizer and make the fertilizer lose its fertilizer effect.

If the vegetables are already infected, the roots must be irrigated with fungicides, not thinking about whether the beneficial microorganisms in the bacterial fertilizer will be destroyed or not, so as not to break out with small losses.

It is not advisable to water the root system before irrigation: First of all, because the root disease of vegetables has already occurred, if watered, the bacteria will spread with the running water, causing more dead trees. The second reason is that watering can easily lead to a decrease in soil air permeability, which leads to hypoxia in vegetable roots, which reduces the resistance of plants to adversity, makes pathogens more susceptible to infection, and exacerbates the occurrence of dead trees.

Therefore, watering before rooting is not recommended. It is not advisable to water immediately after root irrigation: Watering immediately after root irrigation will quickly dilute the liquid medicine in the soil, reducing the effect of sterilization and disease prevention.

Therefore, try not to water the roots for a few days after irrigating them with fungicide. If there is a shortage of water, a small amount of water can be poured into the planting furrow, the water surface should be 1 3 of the height of the ridge, and it should not exceed the ridge surface, so as not to dilute the concentration of the chemical solution in the soil.

Timely remediation of phytotoxicity: After irrigating the roots with fungicides, once the vegetables show symptoms of wilting, yellowing and stopping growth, they should be remedied in time to avoid greater losses. Remedy:

One is to water quickly to dilute the concentration of the chemical solution in the soil; The other is to spray and irrigate the root system with Aidoshou or Yunda 120 in time to reduce plant toxicity, promote the root system to rejuvenate as soon as possible, and restore the normal growth of the plant.

Good quality seeds should be chosen, and they should be watered and fertilized in a timely manner, and some pesticides should also be sprayed, and they should also be prescribed the right medicine.

First of all, it is necessary to burn the wax at the base of the root to avoid the liquid medicine from overflowing from the ridge, and secondly, the liquid medicine is divided into skin to do slippery irrigation, and it is best to use a kettle to operate, so that the medicine will not splash everywhere.

At this time, you can choose the way of sprinkler irrigation, and Mori can also set up a prescribed faucet in this peerless place, and then turn it on at the specified time.

First dig two furrows on either side of the rhizome of the plant, then go to water and sprinkle fertilizer on the roots.

You should have the right approach first, but you can also dig a small hole and then plant fertilizer, so you can increase your yield.

Dipping medicine to improve survival rate.