Garlic and chives are the two most commonly grown vegetables in rural areas.

The water is not enough to provide the normal growth of garlic; Planted in the same area for many years, some nutrients in the soil are missing; sowing too early; Harm from underground pests such as garlic maggots.

Garlic is very shy to plant heavy cropping, if long-term planting not only the production and quality will be less than the previous year, resulting in a lot of garlic seedlings yellow leaf condition, but also will continue to lead to the gradual improvement of harmful pathogens in the field soil layer, not only will inhibit the normal growth and development of garlic, resulting in poor garlic growth, low production, more serious immediately cause garlic to lose green and even die. The root stinky boy can not only disinfect and sterilize seedlings, soil disinfection, and root irrigation, but also be immediately digested and absorbed by green plant rhizomes, promote the growth of plants, inhibit the normal development of pathogenic bacterial hyphae or immediately eliminate pathogens.

In the case of garlic planting, if farmers apply chemical pesticides in excess of chemical pesticides for a long time, coupled with unreasonable topdressing methods, it is easy to lead to fertilizer damage in the garlic field, endangering the growth and development of garlic, and at the same time, planting garlic every year will also cause the accumulation of pathogens in the field. If farmers plant garlic early, encounter a higher temperature, easy to cause garlic maggots and other underground pests, endanger the normal growth and development of garlic rhizomes, especially in the case of farmers in the application of base fertilizer, too much application of base fertilizer, will lead to mild root burning of garlic plants, easy to cause garlic to occur yellow leaves and dry leaves.

The soil moisture content in the garlic field is large, which will affect the permeability of the soil environment, which is conducive to the damage of harmful bacteria in the soil layer, but if the soil layer in the garlic field is too dry, it is easy to make the garlic plant less water, which will harm the growth and development of garlic, and lead to the condition of garlic yellow leaves and dry leaves. In the prevention of agriculture and animal husbandry, it is best to carry out crop rotation, especially for the heavy stubble land with serious disease in the past, and to implement crop rotation for more than three years for non-onion, ginger and garlic crops. If there is no standard to carry out crop rotation, in addition to disinfection and sterilization of onions, ginger and garlic seeds before planting, attention should also be paid to timely prevention.

When garlic and chives occur after the root rot condition, it is very easy to occur yellow leaves, dead seedlings, most of them are all roots of insect pests or some pathogenic bacteria, such a thing, the first thing to do is sterilization and disinfection, under normal circumstances, many friends are selected to spray insecticides and the like, but in fact, there is no need for this, as long as you use baking soda and white rice vinegar can be solved, the specific method is as follows.

You can use drugs to prevent and control it, you must disinfect the soil before planting, you can spray pesticides, pay attention to water and fertilizer management, and don't water too much.

If we are planting garlic and shallots, we find that the garlic and shallots have space to rot and dry the roots, and the yellow phenomenon can be appropriately sprayed with pesticides or plant ash.

In the process of growing these two vegetables, try to avoid too much watering and keep the root system ventilated and breathable. In addition, adequate nutrients should also be given.

Summary. 1. Too much waterShallot needs a certain amount of water during the growth process, but if the water holding capacity in the soil is too large, it will affect the respiration of the roots, resulting in yellowing of its leaves. In view of this situation, it is necessary to drain water in time, in addition, watering can be suspended in rainy weather, and ventilation should be paid attention to if the air humidity is too high.

1. Too much waterShallot needs a certain amount of water during the growth process, but if the water holding capacity in the soil is too large, it will affect the respiration of the roots, resulting in yellowing of its leaves. In view of this situation, it is necessary to drain water in time, in addition, watering can be suspended in rainy weather, and ventilation should be paid attention to if the air humidity is too high.

Second, lack of nutrients shallots need to be applied before planting, usually should be properly dressed, if the soil is too poor, fertilizer is not enough, the plant will be yellow because of the lack of nutrients. In this case, it is necessary to replenish nutrients in time, and at the same time choose compound fertilizer, if it is a lack of trace elements, trace element fertilizer can also be applied.

3. Disease affects shallotsIf they are diseased, the bacteria will affect the health of the plant and will also cause its leaves to turn yellow. Common diseases include downy mildew, gray mold and purple spot disease, etc., after finding the disease, it is necessary to pull out the diseased plants in time, and use the corresponding drugs to irrigate the roots around to eliminate the residual bacteria. Ventilation should be strengthened in normal times, especially when the planting density is high.

The main cause of green onion rot root disease should be caused by heavy stubble, generally green onions can be rotated with gramineous crops, leguminous crops, nightshade crops, etc., before planting green onions, the field should be 25 30 cm deep ploughing, the time of deep ploughing is arranged before winter, it is best to exceed the bottom of the plow, and at the same time increase the application, fully rotten farmhouse fertilizer as base fertilizer, plough the land when applying 2 5 square fully rotted soil miscellaneous fertilizer per mu, when transplanting, About 2,000 kilograms of farmhouse fertilizer, 100 kilograms of microbial beneficial bacteria fertilizer, soil fertilizer, and mixed evenly can enhance the disease resistance of green onions. ”

Because the green onion disease and insect pest do not get **, it will lead to root rot, and growers must kill insects regularly to avoid root rot.

It may be root rot, it may be that the outside temperature is too high, or it may be too dense, it may be that it is not ventilated, or it may be a lack of organic fertilizer. Remove all the problematic parts and spray pesticides appropriately.