How much potassium fertilizer is needed for corn and how many catties of potassium fertilizer per mu

Corn fertilization technology.

1. Studies on the nutritional characteristics of maize have shown that for every 100kg of corn grains produced, the proportion of nitrogen, phosphorus and potassium absorption in spring maize is about 1::, and nitrogen (N), phosphorus (P205) and potassium (K20) 5 6kg need to be absorbed; Summer maize needs to absorb nitrogen (N), phosphorus (P205) and potassium (K20), and the absorption ratio of nitrogen, phosphorus and potassium is about 1::.

Compared with summer maize, the uptake of nitrogen and phosphorus in spring maize was more concentrated and the absorption peak was earlier. Generally, nitrogen uptake in spring maize only accounts for the total at the seedling stage (before jointing), in the middle stage (from jointing to heading and flowering), and in the later stage (after heading). The nitrogen uptake of summer maize at the seedling stage, the middle stage, and the late stage.

Phosphorus absorption in spring maize, which accounts for the total absorption at the seedling stage, in the middle stage and in the late stage. The phosphorus absorption of summer maize at seedling stage accounts for 80 in the middle stage and 80 in the late stage. The absorption of potassium in maize increased rapidly after jointing in spring and summer, and reached a peak in the flowering stage, and the absorption rate was large, which could easily lead to insufficient potassium supply and potassium deficiency symptoms.

2. Fertilization technology According to the law of nutrient absorption during the growth period of corn, the fertilization principle of corn is: apply sufficient basal fertilizer, light seedling fertilizer, heavy application of jointing fertilizer and bud fertilizer, and skillful application of grain fertilizer.

1) Base fertilizer: The base fertilizer is mainly organic fertilizer, and about 3000k8 of organic fertilizer is generally applied every 667m2. About 30 40ks of superphosphate were applied to phosphorus-deficient soils per 667m2, and potassium chloride was applied to potassium chloride 5 10kz per 667m2 of potassium-deficient soils.

In general, the late-acting fertilizer accounts for about 80 of the total amount of basal fertilizer, and the fast-acting fertilizer accounts for about 20. The base fertilizer can be applied deep in the whole layer, and when the amount of fertilizer is small, the method of furrow application or hole application can be used. Cropping or mixed cropping corn should pay attention to the use of seed fertilizer, - general use of organic fertilizer, with an appropriate amount of nitrogen and phosphorus fertilizer, the use of strip application or hole application method.

2) Top dressing: When the amount of fertilizer per 667m2 is less than 20kg of standard nitrogen fertilizer, it is advisable to top dressing once in the middle of jointing, and the stalks and ears should be attacked together. Generally, about 30 days after sowing of early-maturing varieties, that is, the "bell mouth stage", top dressing is better.

About 25 days after sowing of medium-ripe varieties, top dressing is good. Late-maturing varieties are sown 35 to 40 days after sowing, and top dressing is good. If the application rate exceeds 20kg of standard nitrogen fertilizer per 667m2, it is better to top dressing in stages.

The focus is on tapping stalks and ear fertilizers, supplemented by seedling lifting and seed fertilizers. The results of the test in various places, the use of secondary top dressing, generally before the heavy after the light, that is, the stalk fertilizer accounted for 60 70, the ear fertilizer accounted for 30 a 40 as good, high fertility field or applied the bottom fertilizer, seed fertilizer, seedling fertilizer, then the previous light and heavy is better. For some soils deficient in trace elements such as zinc, iron, boron, etc., zinc sulfate or borax solution sprayed at jointing and booting stages has a significant yield increasing effect.

You mean, ask how much potassium fertilizer is needed for a piece of land, generally a piece of land should be fifteen acres, so you don't need to use much potassium fertilizer.

He applied it in the cornfield. It should be a quantitative element. I think twenty per acre.

catties are enough. It is enough to mainly use some nitrogen fertilizer.

How much fertilizer is used for corn per acre.

1. In the field with a yield level of more than 800 kg, 16-18 kg of nitrogen fertilizer, 6-8 kg of phosphate fertilizer, 5-8 kg of potassium fertilizer, 1-2 kg of zinc sulfate, and 1-2 kg of borax are recommended.

2. For fields with a yield level of 600-800 kg, 14-16 kg of nitrogen fertilizer is recommended, 4-6 kg of phosphate fertilizer, 4-7 kg of potassium fertilizer, 1-2 kg of zinc sulfate, and 1-2 kg of borax per mu.

3. For fields with a yield level of 400-600 kg, 12-14 kg of nitrogen fertilizer, 3-5 kg of phosphate fertilizer, 1-5 kg of potassium fertilizer, 1 kg of zinc sulfate, and 1 kg of borax are recommended.

Five kilograms will do.

Summary. Hello Dear Hello We will be happy to answer your questions.

The optimal ratio of nitrogen, phosphorus and potassium applied to corn.

When corn is planted, it is generally divided into spring corn and summer corn, and the absorption of nitrogen and phosphorus fertilizers is more concentrated than summer corn, and the peak of absorption is earlier.

In the process of planting corn, if it is planted in spring, the proportion of its demand for nitrogen, phosphorus and potassium elements is about about, and the demand for phosphorus fertilizer is greater for the growth of seedlings, and the demand for nitrogen fertilizer is greater for the middle growth.

If it is corn planted in summer, the ratio of nitrogen, phosphorus and potassium needs is about 2:1:3. In the process of planting, summer maize has a greater demand for phosphorus at both seedling and middle stages.

However, in both spring and summer maize, the demand for potassium increases in the late growth stage, that is, after jointing, and even reaches its peak during the flowering period. You should fertilize corn reasonably according to its growth stage.

Does corn need more phosphate or potassium fertilizer?

Hello dear I am glad to answer your questions about the optimal ratio of nitrogen, phosphorus and potassium applied to corn when planting corn, which is generally divided into spring corn and summer corn, compared with summer corn, the absorption of nitrogen and phosphorus fertilizer is more concentrated, and the peak of absorption is earlier. In the process of planting corn, if it is planted in spring, the proportion of its demand for nitrogen, phosphorus and potassium elements is about about, and the demand for phosphorus fertilizer is greater for the growth of seedlings, and the demand for nitrogen fertilizer is greater for the middle growth. In the case of summer planted corn, the ratio of the demand for nitrogen, phosphorus and potassium is 2:

Around 1:3. In the process of planting, summer maize has a greater demand for phosphorus at both seedling and middle stages.

However, in both spring and summer maize, the demand for potassium increases in the late growth stage, that is, after jointing, and even reaches its peak during the flowering period. You should fertilize corn reasonably according to its growth stage.

I would like to ask what is the effect of the ratio of nitrogen, phosphorus and potassium of sulfur-based fertilizer.

The ratio of nitrogen, phosphorus and potassium absorption is 1:: about 1:: is good.

Then the ratio I'm talking about is not good.

Suggested above.

<> amount of chemical fertilizer required for an acre of corn should be determined according to the planting variety, the amount of planting per mu, etc., generally every 100 kilograms of corn grains produced, about 10 kilograms of chemical fertilizer are needed, including 2-4 kilograms of nitrogen fertilizer, kilograms of phosphate fertilizer, and kilograms of potassium fertilizer.

Dust. The amount of chemical fertilizer required for an acre of corn should be determined according to the planting variety, the amount of planting per mu, etc., generally for every 100 kilograms of large and corn grains, about 10 kilograms of chemical fertilizer are needed, including 2-4 kilograms of nitrogen fertilizer, kilograms of phosphate fertilizer, and kilograms of potassium fertilizer.

Generally, the base fertilizer is mainly compound fertilizer, basically per kilogram, and some are even 100 kilograms. Because we basically adopt the "one-bombardment" model here, only the bottom fertilizer is applied to the corn plant, and no top dressing is carried out. It is not that 80 catties of compound fertilizer can be applied to an acre of land to obtain high yields, and no one can absolutely say such a thing.

When corn is sown, how many catties of fertilizer should be applied to an acre of land to ensure a high yield of corn?

When farmers plant corn with suspicious skins, they are eager for high corn yield, but how many catties of bottom fertilizer should be applied to an acre of land to ensure high corn yield?

I think there should be no fixed answer to this question, because different plots, different varieties of corn, different weather temperatures, different light and fertilization methods, all these differences will bring different yields to the growth of corn.

Everyone knows that corn is a water-loving and fertilizer-loving crop, and before sowing, it is necessary to apply foot fertilizer to ensure the nutrients required for the emergence and growth of corn. The base fertilizer is generally based on farmhouse fertilizer.

I remember when I was a child, after the wheat harvest, my parents would sprinkle the well-rotted farm manure into the field, and then harrow the ground and sow the seeds, which was very hard.

Now, with the development of science and technology, there is less and less farm fertilizer in the growers' homes, which virtually increases the cost of corn planting. In addition, the continuous decline of corn and the increase in costs will inevitably make the people "lose money and make money", and there is no profit at all.

We generally apply compound fertilizer hereBasically, there are catties of acres, and some even 100 catties。Because we basically adopt the "one-bombardment" mode here, only the bottom fertilizer is applied after the corn is planted, and the top dressing is not carried out.

One acre of land can be applied with 80 kg of compound fertilizer to obtain high yield？No one can say such a thing absolutely. It can only be adapted to local conditions according to specific conditions such as weather and light.

Summary].In addition to fertilizer in place, corn growth should also be combined with water management, as long as water and fertilizer management is good, corn yield can be improved, to achieve high quality and high yield!

Summary. Hello, the amount of soil corn fertilizer input for the new pad should be determined according to the requirements of soil fertility and corn variety. In general, the soil fertility of the new mat is low, and the corn varieties are also relatively special, so the fertilizer input is also higher than that of the general soil.

Depending on the fertility of the new mat soil, the amount of fertilizer applied varies. In general, the soil fertility of the new mat is low and requires more fertilization than the normal soil. The amount of fertilizer should be 150-200 kg of total fertilizer, of which 50-70 kg of nitrogen fertilizer, 30-50 kg of phosphate and 20-30 kg of potassium.

In addition, the soil fertility of the new mat is low, and organic fertilizers are also needed to improve soil fertility, increase soil fertility, improve soil structure, and promote the growth and development of maize. The application rate of organic fertilizer should be 50-100 kg per hectare.

Hello. Dear, it's convenient to tell me in detail what kind of land it is.

It used to be good land, and then this year, the soil of Xindian is several meters thick.

Look at the land where you can get grain.

How much fertilizer is on an acre of land.

Okay, dear, where is the soil of the pad?

It's just that the soil dug out of the road is raw soil, okay.

Hello, the amount of soil corn fertilizer input of the new pad should be determined according to the requirements of soil fertility and corn varieties. In general, the soil fertility of the new mat is low, and the corn varieties are relatively special, so the fertilizer input is also higher than that of the general soil. Depending on the fertility of the new mat soil, the amount of fertilizer applied varies.

In general, the soil fertility of the new mat is low and requires more fertilization than the normal soil. The amount of fertilizer should be 150-200 kg of total fertilizer, including 50-70 kg of nitrogen, 30-50 kg of phosphorus, and 20-30 kg of potassium. In addition, the soil fertility of the new mat is low, and organic fertilizers are also needed to improve soil fertility, increase soil fertility, improve soil structure, and promote the growth and development of maize.

The application rate of organic fertilizer should be 50-100 kg per hectare.