The management of the middle and late stages of cotton planting is very important, how should it be

In the later management, we must dispose of the weeds in the cotton field, and at the same time, we should water more and fertilize more, and we must pay attention to spraying some pesticides to remove bacteria, so as to avoid poor cotton growth.

Be sure to apply appropriate chemical fertilizers, water the appropriate amount of water, deal with the pests and diseases above, and deal with the weeds on the ground in a timely manner, and manage them strictly in accordance with the method.

The sun must be sufficient, the top dressing must be fertilized, the harm of pests and diseases must be prevented, the heart must be topped, and if there is a heavy rain, it must be remedied in time.

We must pay attention to the fertilization situation, pay attention to the watering situation, pay attention to the prevention of diseases and insects, need to be treated, and manage in accordance with scientific methods.

Pay attention to top dressing on time, but also pay attention to the management of moisture, but also pay attention to the flowering period of cotton, but also learn the skills of field management.

In the middle and late stages of cotton, we must do a good job in field management, water and fertilizer management, and prevent and control diseases and pests.

In the mid-eighties, the hometown of the Agricultural University advocated the planting of cotton, and most of the land was planted with cotton for several years in a row, and cotton also brought good benefits to local farmers in the Yangtze River basin and Xinjiang. The sowing period of the Yellow River Basin and the Yangtze River Basin is the month of each year (the specific time is related to the variety, latitude and other factors), and the sowing period of Xinjiang cotton is between months, and the cotton is ripe and picked.

September, October. In fact, it has been <> since spring and March

Cotton is a thermophilic crop and requires a higher temperature when germinating and emerging. Sowing too early, low temperature, long seedling emergence time, high nutrient consumption, weak vitality of cotton seedlings, serious seedling disease, often cause "early but incomplete" or "early but not hair"; If sowing too late, although the emergence of seedlings "fast and uniform", the bud period is mainly based on the prevention and control of pests and diseases, when the buds on the first juice of cotton begin to flower, the growth period of water and fertilizer, the amount of drip fertilizer per mu depends on the growth of cotton, generally not less than 45 kg per mu, and the potential can be increased to 55 kg.

Increase the application of organic fertilizer per mu to apply 2000 3000 kg of high-quality soil miscellaneous fertilizer, or about 500 kg of well-decomposed high-quality livestock and poultry manure, or more than 200 kg of commercial organic fertilizer (organic matter content 30, nitrogen, phosphorus and potassium content 4). 3. Cotton fields where cotton firewood is returned to the field as soon as it is ripe or stubble is not planted with overwintering crops.

Sow seeds at the right time. Around mid-April, the temperature rises, and the land is fertilized and sown begins. Water the plot, sprinkle 5-6 square meters of organic fertilizer per mu when it is suitable for dry and wet, 50 kg of compound fertilizer, start ploughing and raking.

Begin machine sowing or artificial planting and mulching, in addition to pressing a small mound of soil at intervals on the mulch, the planting and harvesting time of the crops before the cotton field should also be considered, and the reserved cotton row interplanting can be sown in early April; If cotton is planted after rape and wheat are harvested, the sowing period should be arranged between April 15 and April 25.

General application of cover top fertilizer. Cover the top fertilizer with 10-15 kg of urea per mu or add kg of potassium fertilizer, and apply it before August 15. Timely irrigation to fight drought. Timely irrigation to fight drought if conditions permit, furrow irrigation is adopted, and the infiltration compartment surface shall prevail.

In the middle and late stages of cotton, it should be irrigated in time to resist drought, and scientific fertilization should be carried out, and the problems of pests and diseases should be prevented in time, and the topping and pruning should be carried out in time, and reasonable regulation and control should be carried out, so as to produce the best results.

I think the management of cotton in the middle and late stages is indeed very important, if we want to better manage cotton in the middle and late stages, so that the effect is more significant, we should plan in advance, and then implement it according to the plan, watering and fertilizing within the specified time limit, and ensure the cleanliness of the environment.

(1) Drought watering and waterlogging drainage. The flowering stage is sensitive to water response, neither drought tolerance nor waterlogging tolerance, so it is necessary to meet the large water consumption demand of cotton fields in time, and high-yield cotton fields should be irrigated in time as long as it does not rain for 7-10 days. In general, cotton fields, if there is wilting on the top leaves of cotton plants at noon, they should be watered.

When the rain is heavy, it should be drained in time. (2) Cultivating soil. Before sealing the ridge of the cotton field at the early flowering stage, it should be combined with cultivating the soil.

It is conducive to irrigation and drainage in case of drought during the period of full flowering and boll formation, and is conducive to the prevention of lodging in the later stage of high-yield fields. (3) Pruning. Timely and early topping, generally July 15-20, before July 25.

Around August 10, no later than August 15.

meters above the row spacing, leaving one leaf branch (slider) during pruning has the highest yield.

Do a good job in pruning hawthorn management, after the cotton topping, easy to grow crazy, pay attention to the ineffective shoots to remove, there are two to three buds on a single branch can be knocked off the edge, the lower layer of old leaves should be knocked off according to the situation, so that the cotton ventilation and light. 3. At this time, part of the early peach of cotton has matured, and it should be harvested in time, otherwise it will be broken, and the general land should be dropped three times in July, with an interval of about 10 days each time. At the same time, the principle of grasping the drip is to "see the dry and wet, dry and water thoroughly", but the drip should not be too large.

In July, the high temperature and poor water and fertilizer retention capacity of sandy soil, it is recommended to drip water 4-5 times in July. This is conducive to reducing the field temperature, increasing the humidity, and increasing the peach setting rate of cotton.

If the growth is affected by high temperature and drought, it should be avoided to water at the appropriate time in the morning and evening, and must not be overwatered to prevent the big water from hurting the roots, and at the same time, three 15 balanced fertilizers and humic acid biological fertilizers should be added, and the water and fertilizer should be maintained, and the three-pronged approach should be used to ensure the effect. A temperature of around 25 degrees Celsius is the most suitable for cotton pollination. Once this temperature is exceeded, the growth and development of cotton will be affected to a certain extent.

In July, it is obviously impossible for the temperature to fall below 25 degrees Celsius. At this time, many cotton plant buds will not open, and the pollination process cannot be completed.

Unlike other vegetation, cotton is subject to a self-regulating mechanism that adds a layer of wax to the surface of the leaves at high temperatures to prevent water evaporation, which affects the fertilization of cotton and ultimately the harvest. So what we need to do is to prevent their self-regulation mechanisms. It is carried out at the peak flowering period, which is the best time for flowering and boll setting, and there are up to 30 to 40 days of effective flowering and boll setting time after topping.

Therefore, topping is a key measure to promote high yield during the important period of cotton growth. In order to achieve the intended purpose of topping.

Focus on pests such as cotton bollworm, cotton blind bug, cotton leaf mite and cotton aphid, so as to prevent spread and reduce the number of harms as early as possible. June is the period of the spread of major pests and diseases in cotton fields, and it is also an important period for the proliferation of natural enemies.

When the cotton is collected, it must be placed in a place with a relatively high temperature and a long time of light, because this will keep the quality of the cotton very good and keep the cotton very dry. And also to prevent dampness, on rainy days be sure to find something to cover it completely.

In the later stage of cotton, the branches should be pruned, the old leaves and empty branches should be removed, and fertilizer should be sprayed on the foliar surface after hitting the group tip to prevent the cotton from aging prematurely due to insufficient nutrition, and it should also be sprayed with ethylene solution for ripening.

Some useless branches and buds should be pinched off in time, and the density should be managed very suitably, and the head should be pinched off when it reaches a certain height.

If you want to have a good cotton, you need to manage it in the later stage, first of all, you can spray some pesticides to prevent cotton pests, and secondly, you need to do a good job of watering and fertilizing, he wants to prevent premature aging of cotton, and sometimes you need to properly remove some weeds in the field.

In the later stage, a large number of temperature differences should be controlled to ensure that the humidity is sufficient, so that the cotton will grow bigger and bigger.

In fact, in the later stage, you only need to manage the quality of cotton and control some pests, and the later stage is mainly due to some pest problems.

To prevent premature aging of cotton, do a good job in insect treatment and disease prevention, prevent greedy green and late maturing, and remove weeds in the field, do a good job in these four management points can effectively ensure the yield and quality of cotton.

During the swelling period, you must spray some fertilizer, which will make it grow better, prune it, remove some redundant buds, and remove some rotten cotton bolls in time.

In the later stage, it should be reasonably fertilized, and it should also be watered, and it should be weeded in an appropriate amount, and chemical fertilizer should also be sprayed, so that it can be well managed.

Cotton is afraid of long-term drought and cannot do without water!!