In recent years, citrus production caused by irrational use of chlorinated fertilizers and pesticides caused the phenomenon of chlorine gradually attracted the attention of citrus farmers, especially after the harvest of fruits, some citrus farmers applied high-compound fertilizer containing chlorine, so that soil As the content of chloride ions increases, the orange tree absorbs a large amount of chlorine, and the water absorption decreases and the root tips die. The toxicity of chloride ion to citrus can be divided into two types, acute and chronic poisoning.
The duration of acute poisoning is short, manifested by the old leaf stripping and the citrus fruit falling off. In severe cases, the orangery is lost. This type mostly occurs in citrus plants that use potassium chloride plus sprays to control citrus pesticides containing chlorine pesticides. Chronic poisoning takes a long time. In the affected citrus tree, the midribs have brownish necrotic areas with a wide base and a narrow upper end. The young shoots show irregular, intermittent brown spots with gray leaves and dark green veins. In winter, leaves are easy to fall off. After stopping the use of chlorine-containing potassium chloride and chlorine-containing pesticides, their symptoms can be alleviated.
So, how can we reduce the harm of chloride ion to citrus? The first is to add nitrogen fertilizer, with little or no potassium fertilizer. General production of 50 kilograms of orange trees can apply about 0.3 kilograms of urea, plus 40 to 50 kilograms of human faeces. In the application of compound fertilizer, it is necessary to use varieties with high nitrogen content and low potassium chloride content. Second, potassium chloride should not be used for rhizosphere fertilization, not to foliar fertilization. When applied in rhizosphere, potassium nitrate, potassium sulfate or potassium dihydrogen phosphate is the best choice. For foliar fertilizer application, use urea, superphosphate, potassium dihydrogen phosphate (or potassium nitrate) to add water and pour it into the tank. Twist for 5 to 7 days before retrieving the filtrate. Dilute with water to use for foliar spray. Shi. After spraying, the leaf color can be changed to green, the leaves thicken, and the strong fruit effect is good. After the autumn shoot is frozen, it is obviously reduced, the leaves are less, the flower quality and flower amount of the following year are obviously improved, and the chlorine ions can effectively prevent the citrus from being Poisoning.
It is a cooked egg made from various seasonings or gravy. Marinated eggs are a popular food in the delicatessen market for eggs and are generally popular with the people.
In the vast Chinese cuisine, the eggs are really inconspicuous. Although it can't be elegant, it is common in the dining table of ordinary people. A delicate, smooth, salty, palatable, chewy, mellow, inexpensive, and delicious egg, can be used as a meal or as a dish, warm and poor, simple and honest. Eat a kind of peace and tranquility, a real satisfaction, who can not see, but often infinitely reminiscent of the people snacks.
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