Ginger is one of the indispensable condiments in our daily life. It is also a very common Chinese herbal medicine. Ginger has the effect of spleen and stomach, dehumidification, cough and phlegm, but also sterilization and detoxification, but even if it has bactericidal effect. In the process of planting, it is also inevitable to be attacked by insects. The common pests of ginger are ginger and ginger, which will cause great losses to ginger. Now we will introduce the prevention and control methods of ginger pests.
The growth environment of ginger, which is native to the tropical regions of Southeast Asia, and the influence of climate, its growth habits are consistent with the growth habits of tropical crops. Ginger likes a warm and humid climate, not cold and drought-tolerant. The most suitable growth temperature is 25 °C ~ 28 °C. If the frost plants will wither, the roots and leaves will no longer have the ability to germinate. Therefore, the cultivation of ginger must be selected. No frost period.
1, ginger soft foot disease: commonly known as ginger hair, this disease in the period from Xiaoman to the summer is the peak period. At the beginning of the disease, the stems and leaves wilted, and then turned yellow, the leaves atrophied, and the roots were water-stained. The cross section of the ginger stem near the root is about 3cm, and the cross section is light black. Soon, the milky white mucus flows out. If you don't pull it out, in a few days, the stems and leaves will rot and stink and spread to other plants.
Ginger soft foot disease is a bacterial disease that is mainly transmitted through soil, water and ginger. Therefore, prevention must be done. The method is: choose the disease-free soil or planting the rice plot: planting in the disease-free area: preventing the roots of the ginger from being covered with water and receiving water; once the disease occurs, the diseased plants should be removed in time, and 5% lime water or 50g should be used. Potassium permanganate, disinfecting the soil with 50 kg of water.
2, ginger rot: the disease is from the skin to the center (the ginger sputum is from the heart to the skin), water or applied unfertilized manure, easy to cause the disease. The main preventive measures are: do not allow the ginger to accumulate water; the farmyard fertilizer applied should be cooked. If it has already occurred, it can be applied to Bordeaux mixture or soil disinfection according to the method of preventing soft feet.
3, pests; mainly ginger, the farmers call it a heartworm. The larvae feed on the larvae to cause the leaves to be yellow, and in severe cases, the whole plant can die. Prevention and treatment methods: Early killing of ginger mites, catching larvae, or poisoning at the first and second instar larvae. The worm can be seen from the larvae at the beginning of May, and the peak of the ginger seedlings in July and August is the peak period. Prevention and treatment are better at applying larvae at lower ages. In the larval stage, 50g of pyrethroid pesticides can be sprayed on water 300--400kg, or 400g of water can be sprayed on the heart of ginger seedlings in the evening. When the liquid flows to the stem, the ginger larvae can be poisoned. kill.
Another kind of pest is called ginger worm, and its adult is a kind of fly. It can be immersed in the pest area with 5000 times of dichlorvos to kill larvae and prevent its spread from harming other plants.
Ginger is a plant that is not suitable for continuous cropping. It usually rotates with rice and legumes. If the continuous cropping will cause the above two pests to increase year by year, it will also cause diseases such as ginger mites and root-worms, and the yield will be reduced or even declined.
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