What do you need to pay attention to when fertilizing vegetables safely in summer?

Safe fertilization of summer vegetables is a major difficulty in ensuring the healthy growth of summer vegetables, so how to carry out safe fertilization? The following will introduce to you what are the precautions for safe fertilization of vegetables in summer.

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1. Avoid applying urea after watering

If urea is watered immediately after application or if rain is encountered, acylammonium nitrogen is lost. Therefore, whether urea is used as a base fertilizer or fertilizer for vegetables, it should be applied after 5-6 days, so that it can be fully transformed before watering, so as not to cause losses and increase the amount of use.

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2. Avoid water shortage in vegetable fields and apply ammonium carbon

When applying ammonium carbon in vegetable plots, whether as a base fertilizer or fertilizer, it should be applied deeply with wet vegetable plots and covered immediately after use. If the weather is dry and no ammonium carbon is applied, it can be sprinkled on the surface of the water and sprayed behind a new tallow film to reduce water evaporation and prevent disease infestation.

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3. Avoid spraying high concentration nitrogen fertilizers

If urea, ammonium sulfide, etc. are used. For foliar spraying of vegetables, although it can make the foliar fertilizer green and good color, the content of harmful salts in leafy vegetables will increase significantly, which will affect the health of consumers.

Supplementary knowledge: Strengthen fertilizer and water management.

Most of the summer vegetables are in the critical period of growth, and a few have entered the harvest period, at this time, whether the fertilization management is proper will have a great impact on the high yield and high quality of vegetables. Fertilization should follow the principle of "more organic fertilizer, less chemical fertilizer". Fertilizers should be targeted, leafy vegetables (cabbage, celery, etc.).

Fertilizers are mainly nitrogen fertilizers and calcium fertilizers, supplemented by potassium fertilizers, phosphate fertilizers and some medium and trace elements (calcium, zinc, magnesium, etc.). ) with a certain amount of foliar fertilizer (potassium dihydrogen phosphate, etc.). Melons (watermelon, winter melon, tomatoes, etc.)

Phosphorus and potassium fertilizers are the mainstay, supplemented by nitrogen fertilizers, and the application of some medium and trace element fertilizers is increased; Root vegetables should be mainly potassium fertilizer, supplemented by root vegetables, supplemented by potassium fertilizer, supplemented by phosphorus and trace element fertilizer. Watering and drainage should be appropriate. When the temperature is high and the rainfall is uneven in summer, pay attention to strengthening watering when it is dry, and watering less regularly to keep it dry.

At the same time, after heavy rains (well-drained) some groundwater is watered to lower the ground temperature, watering can be combined with fertilization.

To choose the right fertilizer, we must pay attention to the concentration when fertilizing, we must pay attention to the efficacy, we must pay attention to the ratio of water, and try not to use fertilizer when the temperature is relatively high.

Pay attention to the weather, temperature, and fertilizer when fertilizing, do not put urea in the fertilizer, and do not use a spraying machine.

Grasp the concentration of fertilizer, grasp the ratio of fertilizer, pay attention to the choice of fertilizer, try to choose biological fertilizer, so that the land is very small.

Summary. Hello dear, I'm glad to answer for you, winter vegetables can be fertilized. Fertilize according to the type of vegetable.

Chinese cabbage, green cabbage and other leafy vegetables need more nitrogen, so high-nitrogen compound fertilizer should be selected; Root vegetables such as radish and potatoes should be reapplied with fertilizers with higher potassium content; Cucumbers, peppers, tomatoes and other fruits and vegetables, in addition to nitrogen fertilizer, phosphorus, potassium fertilizer demand is also larger, base fertilizer should be selected nutrient balance of compound fertilizer, and with organic fertilizer. I hope mine is helpful to you, oh love you. <>

Can <> winter vegetables be fertilized.

Hello dear, I'm glad to answer for you, winter vegetables can be fertilized. Fertilize according to the type of vegetable. Chinese cabbage, green cabbage and other leafy vegetables need more nitrogen, so high-nitrogen compound fertilizer base bond should be selected; Root vegetables such as radish and potatoes should be reapplied with fertilizers with higher potassium content; Cucumbers, peppers, tomatoes and other fruits and vegetables, in addition to nitrogen fertilizer, phosphorus, potassium fertilizer demand is also larger, base fertilizer should be selected nutrient balance of compound fertilizer, and with organic fertilizer.

I hope mine is a good match for you, oh love you. <>

<>Hello dear, vegetable fertilization and reapplication of organic fertilizer. The application of organic fertilizer can not only improve the physical, chemical and biological properties of the soil, mature the soil, fertilize the soil, improve the quality of products, reduce the nitrate and nitrite content in vegetables, increase the content of vitamin C, and increase the sugar content of melons and fruits. Moreover, in the process of decomposition and utilization, organic fertilizer can produce carbon dioxide and accumulate in greenhouses, which is conducive to improving the photosynthesis of vegetables and promoting the increase of vegetable production.

I hope mine is helpful to you, oh love you. <>

Take a look at climate fertilization. In summer, the temperature is high, the fertilizer decomposes quickly, and the rain is abundant, and the fertilizer is easy to lose. When fertilizing vegetables, a small amount of manure should be taken many times, and the rotten farmhouse fertilizer should be applied in a timely manner and scattered. Do more on sunny days and less on rainy days.

Second, look at soil fertilization. Different soil qualities and vegetable fertilization methods are also different. Light loam soil has good fertilizer retention and fertilizer supply performance, and can be applied more and again.

Sandy loam soil can be fertilized multiple times, but the amount should be small to prevent fertilizer waste. If the plot is too compacted and hard, pay attention to the application of organic fertilizer after decay.

Third, look at the seedling fertilization. Master the principle of "less seedling stage, stable flowering stage, and heavy fruit stage", mainly nitrogen fertilizer in the early stage, and nitrogen, phosphorus and potassium in the middle and late stages. The vegetative growth period of early-maturing varieties is short, and the early stage should focus on promotion; The late-maturing varieties have a long vegetative growth period, and the early stage focuses on the combination of control and promotion, so that the seedling stage can grow steadily.

At the seedling stage, the concentration of 10%-15% manure water is generally applied, and it can be gradually thickened with the growth of the plant. By the late stage of growth, it can generally be concentrated to 30% to 40%.

Fourth, look at the type of vegetable fertilization. Beans have rhizobia for nitrogen fixation, which requires less nitrogen fertilizer and more phosphorus fertilizer. Root vegetables and potatoes require more potassium fertilizer; Leafy vegetables require more nitrogen fertilizer; On the basis of sufficient nitrogen fertilizer, fruits and vegetables also need to be matched with phosphorus and potassium fertilizer.

Fifth, look at fertilizing fertilizer. Nitrogen fertilizers such as ammonium bisulfate and human feces are acidic and cannot be mixed with alkaline fertilizers such as plant ash, so as not to reduce fertilizer efficiency. Superphosphate, etc., cannot be mixed with acidic fertilizers.

Ammonium bisulfate and urea are in contact with seeds, stems and leaves, which can easily cause burns. Urea is used as topdressing outside the root, and its concentration cannot exceed 1%, and ammonium chloride and potassium chloride cannot be used on crops that avoid chlorine such as potatoes. By the late stage of growth, it can generally be concentrated to 30% to 40%.

Sixth, look at fertilizer fertilization. Farmhouse manure is slow and generally used as base fertilizer. Chemical fertilizer is fast, nutrients are incomplete, and fertilizer is easy to cause growth, so it is only suitable for top dressing and a small amount of base fertilizer.

Urea is generally used as top dressing, which should be applied 4-6 days in advance in order to exert fertilizer effect. Phosphate fertilizer has little mobility, and is generally used as seed fertilizer and top dressing. Top dressing should be ditched and applied intensively to the root layer.

Seven look at the sky to fertilize. Do not apply fertilizer on rainy days to avoid fertilizer loss; Do not fertilize in stuffy weather, do not fertilize in foggy days, and do not fertilize when the temperature is high, so as not to cause plant mildew and disease, so fertilization should be carried out on sunny days.

Leafy vegetables should not be treated with ammonium nitrate; Vegetables should not be watered after urea is applied; Vegetables should not be repeatedly applied with ammonium sulfate; Ammonium bicarbonate cannot be applied when there is a shortage of water in vegetable fields; Leafy vegetables should not be sprayed with high-concentration nitrogen fertilizer; Greenhouse vegetables should not use ammonium nitrogen fertilizer with higher concentrations.

Don't overdose, or you'll burn to death.