How can corn yields be higher and better?

As we all know, corn is a high-yield crop, with a strong ability to use light energy, drought and water saving, strong ability to resist disasters, high yield potential, known as the crop "king of high yield", is widely planted in the world, taking China as an example, corn is currently the highest yield food crop in China, and at the same time in China (2017) Xinjiang region has also created an amazing corn high yield record, kilograms, that is, the level of 3,000 catties. Although there is also a gap with the United States, it is also a new record for China's high corn yield.

The yield of maize is generally composed of the number of plants per mu, the number of grains per ear and the weight of 100 grains, and these three factors affect each other. If the number of plants per mu is too much, it is easy to cause small ears of corn, the ratio of grains per ear is relatively small, and the weight of 100 grains will not be too high. As for how to improve corn yield, there are many influencing factors, mainly including:

First, choose excellent varieties. When purchasing seeds, it is necessary to choose high-yield and stable varieties with high germination rate, strong disease resistance, plant convergence and suitable growth period. 2. High-quality subsoiling and land preparation.

To choose the right local planting of high-quality corn varieties, seeds ** is not the more expensive the better, mainly according to the local climate environment to choose the accumulated temperature and local climate suitable for disease resistance, lodging, insect resistance of the excellent varieties, the right corn seeds is an important part of the harvest of grain. Planting density: corn planting needs to be reasonable and dense, the density is too low, although a single corn ear grows very large, but the number of ears will be relatively small; If the density is too high, the number of ears will increase, but the leaves of the corn plants will be shady each other, so the light will not be used well.

Scientific fertilizer: crops and flowers, all rely on fertilizer; The growth period of summer maize is short, the whole growth period is under the conditions of high temperature and rain, the growth and development are also fast, the seedling begins to absorb after 10 days, and the absorption is the most from 20 days after emergence to jointing and booting. For the corn harvested grains, if you plant one stubble a year, plant a large area, the current higher yield per mu is about 1400 catties, and some can reach 1600 catties.

Sticky corn and sweet corn may be possible to achieve two crops a year based on the number of ears of corn harvested per acre.

Pay attention to the temperature, pay attention to the soil, and secondly, choose the right time, so that the yield of corn can be higher, and you should choose some high-quality seeds.

When planting, you should choose the right soil, pay attention to fertilization, ensure sufficient nutrition of corn, but also choose the right seeds, choose the right planting season, so that you can improve the yield of corn.

Some high-energy fertilizers should be used, and they should also be watered frequently, and they should also be fertilized frequently, and some pig manure should also be used, so that the corn can have a high yield.

It is necessary to select high-quality corn seedlings, water more, apply more fertilizer, and then pay attention to the disaster of insects, maintain the nutrition of the land, and observe the growth dynamics of corn at any time.

1. Timely land preparation. Although corn has a well-developed root system and strong adaptability, it can be planted on fertile and barren land, but creating a good soil environment still plays a great role in promoting the quality and high yield of corn. Corn plants are tall and have well-developed root systems.

During its growth, it absorbs a lot of water and nutrients from the soil. Therefore, it is necessary to choose loose soil with good air permeability for filling. Land preparation is to create a good growth environment for the growth of corn, improve soil fertility, and improve soil water use efficiency.

When preparing the land, you should choose a flat land. The soil layer should be deep, the topsoil should be fine and flat, and there should be no debris, so as to lay a good foundation for ditching and ridge formation.

2. Watering requirements. Change the traditional corn irrigation method - surface irrigation. In the late 80s, some new irrigation methods were promoted, such as horizontal boundary (ditch) irrigation, gushing irrigation, long-boundary segmented irrigation, etc., and the water-saving effect was greatly improved, such as sprinkler irrigation, drip irrigation, etc.

Sprinkler irrigation technology has the characteristics of high water conveyance efficiency, strong terrain adaptability, and improvement of field microclimate, and can be combined with agricultural technical measures such as spraying and weeding, and has a good effect of saving water and increasing yield. It is especially suitable for areas with insufficient water resources and strong permeability. Drip irrigation uses drippers or other miniature water devices to deliver water directly to the roots of crops.

The irrigation is highly uniform and can be used in combination with fertilization and pesticides. It is currently the most water-efficient irrigation technology.

3. Strengthen the management of corn growth period. If the time is short and the seedlings are fixed, select and maintain robust seedlings; do a good job of intercropping weeding; Serious prevention and control of pests and diseases; Increase the amount of fertilizer, especially in the field with low soil fertility, the base fertilizer should be reapplied, the top dressing should be heavy before and the back is light, nitrogen, phosphorus and potassium should be combined, and the micro-fertilizer should be applied appropriately, and zinc sulfate should be used per mu; Reasonable irrigation, seedling stage control irrigation, timely and appropriate irrigation after jointing, etc. Fertilization can be done in accordance with the following requirements:

Generally, every 100 kg of grain produced needs to absorb nitrogen (N) kg, phosphorus (P2O5) kg, potassium (K2O) kg, and the ratio of nitrogen, phosphorus, and potassium is 3:1:.

4. Artificially assisted pollination. Before flowering, males can be removed every other row. If the bracts are too long, the top 3 7 cm can be cut off to allow the filaments to emerge early and increase the chance of pollination. At the same time, it can prevent the reduction and failure of natural pollination of corn due to rain.

Clause. 1. Leaf removal When the corn seedling grows to 5 leaves, use a blade to cut off all the plants above the first leaf, and remove the first leaf by hand. Because the growth point of the corn seedlings is still below the * table at this time, the plant will grow new leaves the next day after removing the leaves.

The corn after leaf picking is thicker, stable and less bald than the leafless stalk, which can increase the yield by 30%.

Clause. Second, the tip of the corn in the middle and late stages of the whole field silking, between the 2nd and 3rd leaves of the upper part of the plant without the knot stick and the silk, fold the corner by hand, but can not be broken, four to five days after the break that is, the rod is drawn, and the broken stem node can generally be restored to its original state in two to four days. In practice, this method can reduce the empty stalk rate of corn from 15% to 40% to 2% 5%, and increase the average yield by 15 to 25 kg per mu.

Clause. 3. Squatting seedlings are carried out after corn seedlings are set to before jointing before corn panicle differentiation.

I think we should fertilize the corn more and every half a month after the corn is half a human's height, so that the yield can be increased.

I think we should increase the amount of fertilizer and apply it every half a month during the filling period of corn, so that the harvest can be high.

In order to make the high yield of corn planted, it is necessary to pay attention to seed treatment and top dressing.

1. Seed treatment.

If you want to increase the yield of corn, you should choose excellent seeds with full kernels and no disease, and then soak them in warm water at 45 degrees for 24 hours, so that the seeds can absorb enough water and improve the germination rate of corn, and then put the corn seeds in an environment with a temperature of 29 degrees for germination.

2. Pay attention to top dressing.

Corn is fertilizer-loving, when breeding corn, it is necessary to apply fast-acting nitrogen fertilizer to it during the seedling period, and in the vigorous growth period of corn, it is necessary to apply compound fertilizer based on phosphorus and potassium.

Recommended ways to eat corn:

1. The easiest way to eat - boiled and eaten.

in corn. Pick when it is ripe in seven or eight years, peel off the old skin of the outside and keep only a layer of white and bright inner skin, and cook it together with the belt spike.

2. The most primitive way to eat - roasted and eaten.

Wrap the corn with green skin in a layer of high-quality red mud and yellow mud, skewer it with clean wooden sticks and bamboo skewers, and put it into the stove or grill it on the grill.

3. The most common way to eat - boil porridge and eat.

Take an appropriate amount of wolfberry and fresh corn. Peel the fresh corn, select the whiskers, clean it, rub it into fine slag with a rubble, and boil it with the porridge to make it sweet and soft.

4. The most complicated way to eat - evaporated cake.

Mix the newly produced corn flour with a little wheat flour, add baking powder, eggs, sugar, water and noodles, and dry and thin to be moderate.

In recent years, China's agricultural development has shown a trend of large-scale and mechanization, and the use of machinery and equipment in the process of planting and harvesting crops in China has increased significantly, greatly improving work efficiency and reducing people's work pressure. However, in the process of mechanized large-scale planting, the conditions required for the normal growth of maize cannot be fully considered, which is not conducive to the improvement of maize yield. As a large corn planting province, Henan should reasonably integrate manual and mechanical according to its own situation, and carry out scientific and reasonable corn planting to ensure the survival rate of corn.

In the process of corn planting, it is necessary to pay attention to the scientific and rational application of chemical fertilizers to ensure that sufficient nutrients are provided for the growth of corn at all stages. Corn has a high demand for nitrogen, phosphorus and potassium fertilizers during the growth process, but the demand for fertilizers is not the same at each stage, and it is necessary to provide the right fertilizer for corn at the right time. To determine the use of chemical fertilizers in combination with the actual planting situation, generally speaking, potassium fertilizer is used first to improve the soil, and then subsequent fertilization is carried out according to the growth status of corn.

It is worth noting that the general use of phosphate fertilizer and potassium fertilizer should be less than the amount of nitrogen fertilizer, and the amount of nitrogen fertilizer should not be too much, so as not to cause *** and affect the growth of corn.

1. Fertilize the soil. In order to achieve sustained high yield of corn, soil fertility is the foundation, and organic fertilizer must be increased and straw returned to the field. We should unremittingly implement the method of returning wheat and corn straw to the side fields, adopting high stubble retention for wheat and deep turning into the soil after straw crushing, so as to increase organic matter, improve production conditions, and improve land quality.

2. Increase density. In order to achieve high yield, it is necessary to plant reasonably and densely, and determine the appropriate seedling retention density according to the characteristics of the variety and the level of soil fertility.

3. Formula fertilization. In general, 3 kg of pure nitrogen (N), 1 kg of phosphorus (P2O5) and 2 kg of potassium (K2O) need to be applied for every 100 kg of grain produced in high-yield fields. 50 kg of N fertilizer (urea) per mu is required in high-yield summer maize fields; P fertilizer (superphosphate) 50 metric feet; K fertilizer (potassium sulfate) 25 kg, for zinc-deficient plots should be added 1 kg of zinc sulfate per mu.

In terms of fertilizer management, light application of seedling fertilizer, heavy application of ear fertilizer, and supplemental flowering and grain fertilizer. Before the seedling fertilizer, about 30% of the total nitrogen fertilizer is added to all phosphorus, potassium and zinc fertilizer, and the deep application (15-20 cm) is made along the side of the seedling to promote root and seedling growth. Ear fertilizer was applied at the large flare stage (11th-12th leaves) of maize, and about 50% of the total nitrogen content was high to promote large ears and more grains.

15%-20% of the total nitrogen was applied to the flower grain fertilizer at the grain filling stage to improve the photosynthetic capacity of leaves and increase grain weight.

4. Disease prevention and insect treatment. There are many corn diseases and insect pests, and disease prevention and control depends on the selection of disease-resistant varieties to prevent and control; The second is to adjust the sowing date, reduce the harm of gray planthoppers, and prevent crude virus disease. Underground pests are controlled by seed coating agents or seed dressing, and corn borer is controlled with phosphine at the large flare stage.

5. Live broadcast late harvest. After the wheat harvest, timely grab the stubble and sow the corn, sowing depth of 3-5 cm, the depth is consistent, and at the same time to ensure the appropriate moisture, when the moisture is insufficient, it should be watered in time after sowing to ensure that the seedlings are full, the seedlings are complete, and the seedlings are even. At present, when the corn bracts in the field turn white and yellow, the grain has not stopped filling, and the appropriate late harvest is an effective measure to increase the grain weight and improve the yield.

Therefore, under the premise of not affecting the normal seed wheat, when the milk line of the corn grain disappears, the black layer appears, and the bracts are dry and loose, that is, it is fully ripe before harvesting to maximize the yield.

Experienced farmers know that it is best to get in the sun before planting corn seeds. Sun-exposed seeds absorb water faster and develop faster after planting. Farmers who have the conditions will also soak the seeds in the chemical agent, and add an extra layer of medicine to the outside of the seeds after soaking.

Because there are trace elements in the chemical agent that are not found in the soil, soaking in advance can help improve the disease prevention ability of the seeds. The addition of an extra layer of medicine is also to improve the disease and insect resistance of seeds.

Before sowing corn seeds, it is best to bask in the sun first, so that the corn can grow better.

During the flowering period, the corn should be regularly fertilized to provide the nutrients needed for the corn to grow, thereby increasing the yield of the corn.

Corn is an important food crop in our lives. It likes to grow in a high temperature environment and has low requirements for water and soil, so many people will choose to grow it. It is a necessity in our lives, and the demand for it is still great.

Due to the large amount of this crop planted, the yield is relatively high and the ** is relatively cheap. Let's take a look at how corn can be grown to increase yields.

1.Soil. This plant does not have high requirements for the soil.

It can be planted in most of the soil. However, when planting, it is better to choose neutral soil for planting, and you can also use some weakly acidic or weakly alkaline soil. When choosing soil, choose one that has a good ability to retain water and fertilizer and comfort.

The right soil is more conducive to the growth of corn. Try not to choose which poor soil to choose.

2.Selection. After choosing the soil, we must choose the seeds of this plant.

We have to be careful in our choice. If the selected seeds are good, there will be a good foundation for future development. There are many types of seeds for this plant, and there are different varieties suitable for cultivation in different regions.

Pay attention to seed selection. Some people are very casual when choosing seeds, so the corn seedlings planted in the later stage are not very good.

3.Seed treatment.

Before sowing, put the seeds in the sun and mix them with some medicine. If we want to improve its resistance, we can also soak it in a chemical insecticide. In this way, its surface will have a certain protective layer, which can greatly improve the ability to resist pests and diseases.

When soaking, be careful not to soak for too long. If it is too long, the water inside will be too saturated, which is not conducive to the future growth and germination of seeds.

4.Fertilization action.

After planting in the soil, fertilize it. This is beneficial for its development. The growth of any organism is inseparable from the ** of nutrients.

When planting corn, you have to remember to fertilize. Before planting, sprinkle a layer of basal fertilizer in the soil. The best type of basal fertilizer is nitrogen or phosphate.

After it grows leaves, you can also use a moderate amount of foliar fertilizer. This can give it enough nutrients for it to grow well.

5.Watering. After planting this plant, we have to water it.

Some people believe that when this plant grows, it should be watered daily. This is not the case. The amount of watering must be appropriate.

Too much or too little can have a certain effect on the growth of the plant. In some arid areas, the frequency of watering should be increased appropriately. If it is a place with a lot of precipitation, water according to the specific situation.

It is believed that we should master these skills when planting corn to increase the yield of corn. Before planting, we should first choose the right soil and seeds, and choose the variety according to our situation. Before sowing, the seeds should be soaked in chemicals for a period of time, and some drugs can be sprayed directly into the seeds.

After the seeds are in the soil, they should be fertilized and watered reasonably. Here we need to pay attention to the right amount of watering and fertilization. If too much or too little watering and fertilization are applied, it can have a negative effect on its growth.