If urea is used as leaf fertilizer, what is the proportion of water?

The proportion of urea as leaf fertilizer is different for different crops with water, the concentration of vegetables is 1, the concentration of flowers is about 1%, and the concentration of fruit trees is about 1%.

Urea can be used as foliar fertilizer to spray crops, vegetables and fruits, and what is the proportion of water? This should be determined according to the growth of crops, in the crop seedling stage, every 30 catties of water (a spray) to add about 2 taels of spraying is appropriate, crop growth in the middle and late stages, such as cotton, corn, etc., every 30 catties of water (a sprayer plus urea 3 4 taels or so), flexible mastery.

The ratio of urea to water is 1:100, that is, 1 gram of urea to 100 grams of water. Foliar fertilizer can improve the photosynthetic efficiency of crops, promote the synthesis, transformation and transport of organic matter by crops, and improve the yield of crops.

Urea is used as foliar fertilizer to spray crops or flowers, and the dilution factor is about 300 times.

Urea can be used to fertilize flowers and plants, it is necessary to dilute urea, and the ratio of urea to water is preferably 1:100, so that the roots of flowers and plants will not be seriously burned.

Yes, when watering flowers with urea, if you directly use urea water to water the flowers and roots, dilute the urea blended with water 5000 times, and water the flowers every other month, each time until the fertilizer water just flows out of the bottom of the pot. If urea is used as foliar fertilizer, mix 20 grains of urea with liters of water, spray the flowers once every half month, and spray the front and back of the foliar surface with fertilizer water each time, so that the foliar surface can be sprayed wet.

Can be poured. When using urea as foliar fertilizer, mix 20 grains of urea with liters of water, spray flowers once every half month, and spray fertilizer water before and after the leaves each time to make the leaves moist.

Summary. Pro, urea and compound fertilizer mix ratio, mixed together to apply good.

The mixing ratio of urea and compound fertilizer generally depends on the type of crop planted, taking oilseed rape as an example, the mixing ratio of urea and compound fertilizer is generally 3:2. Different ratios will have different effects on the lettuce, when only the seedlings are watered with water and the compound fertilizer is applied alone, the plant will be short and the growth will be slow; When the seedlings are mixed with urea and compound fertilizer, their growth is relatively good, when the ratio of urea and compound fertilizer is 3:

2. The growth indicators of seedlings are advantageous.

Ratio of urea and compound fertilizer to water.

The mixing ratio of pro, urea and compound fertilizer, mixed together to apply urea and compound fertilizer The mixing ratio of the state macro ruler generally depends on the type of crop planted, taking oilseed rape as an example, the mixing ratio of urea and compound fertilizer is generally 3:2. When only the seedlings are watered with water and compound fertilizer is applied alone, the plant will be short and the growth will be slow. When the seedlings are mixed with urea and compound fertilizer, their growth is relatively good, when the ratio of urea and compound fertilizer is 3:

2. The growth indicators of seedlings are advantageous. The proportion of water.

10 catties of fertilizer need to be mixed with a few catties of water.

Pro, mix with 30 kg of water.

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1. For cereal crops, the spraying concentration is, that is, kilogram-2 kilograms of urea granules are added to water with a water volume of 100 kg. When sprayed during the flowering period, the concentration of urea should be lower, and the fertilizer can be sprayed on 5 acres of land (15-20 kg of water per acre).

2. The spraying concentration of leafy vegetables, such as vegetables and cucumbers, is 100 kg of water and 1 kg of urea granules.

3. Fruit trees, apples, pears, grapes and other fruit trees are appropriate. That is, the water is 100 kg of water, add kg of urea fertilizer, dissolve and stir fully.

4. For nightshades, the spraying concentration is the best, that is, the water is 100kg of water and the kilogram of urea can be added.

It is more suitable to spray urea with 300 times of liquid on the foliar surface, and about 30 catties of 1 tael of urea mixed with water.

5 taels of urea with about 100 catties of water.

Urea is used as foliar fertilizer, and the proportion of its mixture with water should be mastered as appropriate, that is, in 100 catties of water, add 50 grams of patting and 100 grams of urea. If it is too light, the fertilizer efficiency is low, and it cannot play its due role; If it is too thick, it will be difficult for the plant to absorb, and it will even cause fertilizer and burn the leaves.

In addition, when spraying foliar fertilizer outside the roots of flowering plants, nitrogen, phosphorus, and potassium should be supplied with comprehensive nutrients. The easiest way to prepare it with water is to add 1 gram of potassium dihydrogen phosphate, 1 gram of ammonium sulfate and gram borate spike to 3 liters of water (this concentration is slightly more than 1500 times the solution).

Urea is a compound fertilizer with high nitrogen content, the chemical name is carbon amide, containing carbon, oxygen, hydrogen, nitrogen 4 chemical elements, good instant solubility, under normal circumstances, can not be directly absorbed and utilized by cropsIt needs to be hydrolyzed into ammonium carbonate or ammonium bicarbonate before it can be absorbed.

In practical production applicationsUrea is mostly used as a base fertilizer and top dressing. Bottom fertilizer is usually not used alone, but will be mixed with potassium fertilizer to fully supplement nutrients, and top dressing is used more. When topdressing, it is mostly used for sprinkling, which can be used before rain or before watering.

Let's be honest,The use of urea as a foliar fertilizer is uncommon and may only be used when the leaves are yellowing and there is a severe nitrogen deficiency. This is because excessive concentration will burn the young parts of the crop, and there are many foliar fertilizers on the market, which have this function and are safer.

StillIf you have to insist on using urea as foliar fertilizer, you should keep in mind the following two precautions for concentration and use time:

A safe urea foliar fertilizer concentration of 500 times is a safe ratio, that is, 1 kg of urea to 500 kg of water. The reference here is to the urea content that is commonly found in the market. Usually the sprayer we use is 20kg capacity, then you can add 40g of urea, stir evenly, and then you can carry out foliar spray.

Foliar spray urea solution should pay attention to the use time of urea high nitrogen content, and when the temperature is too high, it is easy to burn the leaves. It is recommended that the prepared urea solution be sprayed in the early morning or evening, and never sprayed on the foliar surface at noon.

In order to improve the utilization of urea, it is best to water the urea solution before spraying it on the foliar surface to increase root viability and faster absorption.

StillThe use of urea solution as foliar fertilizer is a means of rapid nutrition supplementation after crops are extremely deficient in fertilizer and have shown obvious symptoms of yellowing and nitrogen deficiency.

If this is not the case, it is recommended that you use potassium dihydrogen phosphate or nitrogen, phosphorus and potassium foliar fertilizer or medium and trace element foliar fertilizer on the market.