Does corn need to be controlled? When is the best time to control Wang? What should I look out for?

During the growth of corn high temperature, high humidity, sufficient light, it is very easy to occur the phenomenon of vigorous growth, and corn growth in the late stage of often windy and rainy weather, if the plant is vigorous in the early stage, the root system is not deep, the stalk is slender and not robust, it is easy to lodging and reduce yield. However, whether to control the prosperity of corn should be flexibly decided according to the moisture, fertility and growth of the corn field, and not all corn needs to be controlled, nor all corn does not need to be controlled.

Let's talk to you: The benefits of corn control; The best time for corn to control prosperity; What kind of plot of land needs to be controlled What kind of plot does not need to be controlled; Commonly used drugs, dosages and methods for conwang; Matters that need special attention when controlling corn growth.

First, the benefits of corn control on the one hand can strengthen the stalks, shorten the internodes, develop the root system, enhance drought resistance, prevent and control lodging in the middle and late stages, on the other hand, it can play a role in dwarf and strong plant height, reduce the ear position, promote the development of fruit ears, and prevent empty trees from balding. Generally speaking, corn can achieve high yield in the later stage, and the plant height can be reduced by about 40 cm, the ear position can be reduced by about 10 cm, and the single weight of the ear can be increased by a certain amount, and the yield per mu can reach about 20.

Second, the time of corn control is too early or too late, which is not conducive to the normal growth and high yield of corn. The timing of corn control is more important, and the control of the peak before the 6 leaves is too early, and the control of the prosperity after the 12 leaves is too late. Premature control of maize will inhibit the normal growth of maize, resulting in stunted growth and too short plants. Delayed control will lead to too long stem nodes (1-3) at the base of corn straw and too short stem nodes (4-5) in the middle of corn stalks, and the male flowers of maize will be stunted, pollen will be less, and pollination will be poor, which will not only fail to have the effect of robust plants and prevent lodging, but will cause the yield of maize to be reduced in the later stage.

The best time for corn to control the peak.

Generally speaking, the best time for corn control is in the 6-10 leaf stage or jointing stage of corn, that is, our farmer friends often say that corn from "foot high" to "knee high" during this period of time, too early and too late is not conducive to high yield and harvest of corn.

3. The principle of corn control and the use of various drugs The principle of corn control is mainly to inhibit the formation of gibberellin and auxin in the plant and weaken the top growth advantage to achieve the purpose of inhibiting vegetative growth and promoting reproductive growth.

Commonly used drugs to control wang are mainly chlormequatin, boosterin, ethephon, paclobutrazole, uniconazole, etc., and the specific dosage and concentration should be flexibly determined according to the type of drug selected, moisture, and growth, but must not be used in excess or excessive concentration.

Generally speaking, the dosage method of the drug can be sprayed according to the method of 25 ml per mu with 50 kg of water, the method of chlormequat can be sprayed according to the method of 30 grams per mu with water 30-40 kg, paclobutrazol can be sprayed according to the method of 50 grams per mu with 50 kg of water, and 40 ethephon can be sprayed according to the method of 45 ml per mu with 50 kg of water.

Corn growth will affect the development of corn ears, and corn lodging will occur, so we must control corn in time. The 6th to 12th leaf stage of maize is the best period for maize control. The spraying agent must be strictly proportioned to the appropriate concentration, in line with the principle of "spraying high but not low, spraying strong and not weak".

Go over and over again and avoid repeating to avoid causing drug damage.

Corn is a high-yielding crop, and as long as it absorbs enough nutrients, has enough water and light, it will grow quickly and wildly.

Corn growth will affect the development of corn ears, and corn lodging will occur, so we must control corn in time.

The time when corn is in full swing.

The 6th to 12th leaf stage of maize is the best period for maize control. This period is the jointing of corn Zheng He Zen period, and it is also the period when corn begins to grow rapidly

During this period, the control of prosperity can strengthen the stems, enhance the lodging resistance, effectively reduce the height of the plant, move the position of the ear downward, reduce the dust and reduce the bald tip of the empty tree.

The way to control corn growth.

During the vigorous growth period of corn,Use chlormequatin, etc, regulate and control the growth of corn. In addition to spraying potato sprinkles, we also:It can be planted reasonably densely at the time of sowingAvoid the phenomenon of weak plants and underdeveloped root system caused by over-dense corn

Matters that need to be paid attention to in the process of corn control.

1. Corn control should be carried out in the 6 to 12 leaf stage, spray the control agent before the 6 leaves, and the control of the growth is too early, which will cause the stem to not be prosperous and the stem to be too low. Peak control is carried out at the 12-leaf stage, and the peak control is too late, which affects the differentiation of fruit ears, causes stunted development, and affects the yield.

2. The spraying agent must be strictly proportioned to the appropriate concentration, in line with the principle of "spraying high but not low, spraying strong but not weak". Go over and over again and avoid repeating to avoid causing drug damage.

3. Spray the anti-growth agent, if there is rain in a short period of time, we can reduce the amount and re-spray as appropriate.

Corn control is to be operated according to the actual situation of corn. If the corn variety planted itself is dwarf corn and does not grow in the process, this operation is not necessary.

If the moisture and light are particularly sufficient during the corn growth period, and the growth is relatively fast, it is necessary to control the growth. It can be controlled with a number of medications. Able to prevent corn lodging.

Not all corn needs to be controlled, the growth of corn is relatively good, and the control of corn is to be completed by picking some corn buds.

corn that grows particularly tall; You can go and buy some special corn control agents and spray them on corn.

Choose the right pesticide to use, so that you can solve the problem, pay attention to the use of fertilizer, and carry out reasonable watering and fertilization, so that it can be effectively controlled.

The best time for corn control is to spray the resistance control agent when the corn has 6 to 12 leaves.

This period is the early stage of jointing in the growth stage of corn, spraying the vigor control agent can effectively control the growth of corn, make the corn stalk thicker, shorten the internode, increase the adhesion of the root system, and is conducive to the transportation of nutrients to the ear, reduce the occurrence of empty trees and bald tips. If the corn is sprayed when the 6-leaf stage is less than 6 leaves, it will cause the stalk of the corn to be too low and the growth capacity of the corn will be insufficient.

The main purpose of corn control is to shorten the internode of the base of corn to enhance lodging resistance, but if the control is carried out after 12 leaves, it will cause the middle internode to be shortened, which not only does not help maize lodging resistance, but even affects the differentiation of corn ears, resulting in poor pollination and fertilization of maize female flowers, and ultimately affects the yield.

Precautions for corn control

In terms of the concentration of the control agent, it is necessary to strictly follow the instructions for scientific application, and do not increase the concentration at will, otherwise it is easy to cause a serious reduction in production. When corn is controlled, it is necessary to flexibly judge according to factors such as variety, plant height, and thickness. Under normal circumstances, for some varieties with thinner stems, tall plants and high ears, it is necessary to control the prosperity, while some thick stems and strong roots with strong wind resistance do not need to control the prosperity, and the plots with insufficient soil fertility and weak corn growth are also not suitable for the control of the growth.

Kongwang pays attention to the principle of "spraying high and not spraying low", and it is necessary to avoid re-spraying when spraying. In arid conditions, the concentration of the agent can be appropriately reduced to avoid the increase of concentration caused by high temperature evaporation of the moisture of the agent solution, while the concentration can be appropriately increased in rainy conditions.

Corn planted in areas with less precipitation or dry farming areas, generally do not carry out control of prosperity, so that the plant grows by white, but in rainy areas or because of too much watering, abundant chemical fertilizer, often causes the plant to grow vigorously or even vigorously, resulting in the plant stem slender, if in case of thunderstorms, it is convenient to pour seedlings, harm growth, at the same time, due to the growth of nutrients is too vigorous, it will delay reproductive growth and development, the female ear node position also rises, the reproductive nutrients are weak, the corn cob that grows is also small, and the production will be reduced, so there is a trend of vigorous growth. It is necessary to carry out prosperity control.

Crops are planted in areas with less precipitation or dry farming areas, generally do not carry out Wang control, so that the plants grow by white, but in rainy areas or because the amount of watering is too large, the fertilizer is abundant, often causes the plant to grow vigorously and even vigorously, resulting in the slenderness of the plant stem, if the thunderstorm is combined, it is convenient to pour seedlings, endanger the growth, at the same time, due to the growth of nutrients is too vigorous, it will also delay the reproductive growth and development, the female ear node also rises, the reproductive nutrients are weak, the corn cob that grows is also small, and the production will be reduced, so there is a trend of vigorous growth. It is necessary to carry out prosperity control. After the first control, the second fertilization should be completed, low nitrogen, high phosphorus and potassium, and immediately irrigated with small water. After this sprinkling, the bud grows to the middle of the small flare stage and the large bell stage.

In order to prevent the bract plants from growing into "elongated", the second control was carried out. The main thing is to use the method of "nitrogen deficiency and water deficiency".

When the leaves at the bottom turn yellow, it is time to water. It indicates that the yellowing of the leaves at the bottom is not a disease or a cause of drought, but mainly because the bottom of the bract is enlarged and thickened, which breaks the corn leaf base. It indicates that the bract plant has been "strong" and can grow normally.

After that, it is watering, fertilization during the big bell period, etc. The key purpose of bud control is to prevent seedlings and improve efficiency, but it is necessary to determine the duration of bud control according to the climatic conditions and growth conditions of bud seedling stage, under the premise of normal temperature, sufficient rainfall, and no drought, the bud rice rise is relatively abundant, so it is necessary to carry out drug manipulation in advance to improve yield and anti-lodging goals.

However, if the seedling stage is relatively drought and the growth of corn seedlings is stunted, it is necessary to moderately delay the peak control period. The key purpose of bud control is to prevent seedlings and improve efficiency, but it is necessary to determine the duration of bud control according to the climatic conditions and growth conditions of bud seedling stage, under the premise of normal temperature, sufficient rainfall, and no drought, the bud rice rise is relatively abundant, so it is necessary to carry out drug manipulation in advance to improve yield and anti-lodging goals. However, if the seedling stage is relatively drought and the growth of corn seedlings is stunted, it is necessary to moderately delay the peak control period.

It can be carried out during the rapid growth period, control the use of fertilizers, and pay attention to the use of some pesticides, so that it can be better solved.

It is best to choose more than 6 leaves in the whole field after all 6 leaves, because this period is just the corn jointing period, the use of wang control agent can effectively shorten the distance between corn nodes, generally corn can be controlled during 6 10 leaves, which is the best period for 7 8 leaves, not only can achieve the effect of controlling the wang, lodging resistance and stable yield, but also greatly improve the yield of corn. It is too early to control less than 6 leaves, and too late after more than 10 leaves or jointing.

7 The 10-leaf stage is better at that time. Chemicals can be used appropriately, and attention should be paid to the proper mixing of water, and the concentration and spraying time should be controlled.

The commonly used drugs for corn to control wang mainly include mequaticin, promectoxin, arthrochloride, paclobutrazol, and uniconazole, but it is recommended to use ethephon for spraying and controlling wang, and the best spraying time is when the corn is 7-9 leaves, and the best concentration is 300-500 mg kg, which can not only be short and strong seedlings, but also conducive to increasing corn yield.

During the growing period of maize, there is a lot of precipitation, high humidity and high temperature, especially in the plots with high soil fertility and fertility, which is easy to have the problems of vigorous seedling growth and weak stalks, and when encountering heavy wind and rain, it is easy to have the problem of lodging and yield reduction.

In order to control vigorous growth, sturdy plants, developed root system, improve lodging resistance, and maximize the high and stable yield of maize in the later stage.

For corn with vigorous growth momentum, it is necessary to control the growth as soon as possible, but it is necessary to pay attention to the best time to control the growth, choose the correct drug to control the growth, and master the method of controlling the growth. Otherwise, not to mention the poor effect of corn control, it is easy to affect the normal growth and yield quality of corn in the later stage.

1. Is it more appropriate to control the time of corn?

Corn control too early, will cause plant dwarf, ear development inhibited, too late to affect the flower spike flowering and pollination and fruiting, generally speaking, 6 leaves before the control of the wang belongs to the premature control of the wang, and 12 leaves after the control of the wang belongs to the control of the wang too late. Stalking.

Normally, the best time for corn control is at the 6-10 leaf stage, or at the jointing stage of corn, or when the corn seedling height is about knee high, the effect of controlling the peak is the best, and it will not dry up and cause adverse effects on corn.

For corn fields with good moisture, sufficient fertilizer and water, and vigorous growth, drug control can be carried out, but corn fields with poor moisture, insufficient fertility, weak growth, and later lack of seedlings and replanting are generally not suitable for drug control.

2. What drugs are used to control corn control? How much is the best amount per mu?

The commonly used drugs for controlling the prosperity of corn mainly include mequaticin, prozhuangsin, arthrothamide, paclobutrazole, and uniconazole, but it is recommended to use ethephon for spraying and controlling the growth.

The best spraying time is when the corn leaves are 7-9 leaves, and the optimal concentration of 300-500 mg kg is used, which can not only shorten the seedlings, but also help to increase the yield of corn.

3. What should be paid attention to in corn control?

1. When spraying, it should be used in accordance with the method of "spraying high without spraying low, sweeping over, and not respraying".

2. When spraying, the amount can be appropriately reduced in dry weather, and the dosage can be appropriately increased when the air humidity is large, but the maximum dosage should not exceed the specified dosage.

3. If it rains 6 hours after spraying, the drug should be halved and re-sprayed after the rain.

4. The spraying time should avoid the high temperature at noon, and it is best to spray after 4 o'clock in the afternoon.