How to grow cotton

Cotton is seedling planting.

Cultivation techniques:

One, grasp the whole seedling

The lack of seedlings should be taken as soon as possible: the same time the seedling sowing of the preparatory seedlings as soon as possible to move into the lack of seedlings, the earlier the seedlings moved the shorter the period of slowing down the seedling, the faster the return to normal growth, the more can narrow the difference between the other seedlings. When there is no preparatory seedling, should be moved as much as possible between the rows of excess seedlings, the sooner the better.

Two, early disease prevention

Cotton in bud before the disease occurred collectively referred to as seedling disease, this period of nutrient area is small, the root system is not yet developed, in the event of cold and rainy weather, the disease is very susceptible to infection, the light cotton seedling growth is weak, the heavier caused by a large area of seedling death.

Three, plowing and loosening

The open rows of early plowing and loosening can be eliminated as early as possible when sowing machinery walking and trampling the formation of knots, can reduce soil moisture to alleviate seedling diseases, can improve the ground temperature to promote the development of cotton seedlings early.

After each rainfall should be timely plowing loosening, so that the soil loose layer to remain loose, soil temperature, air, water, nutrients are better regulated, to promote the growth of the root system fast, deep, wide distribution, become a developed root system, enhance the absorption of water, nutrients, and resistance to the outside world's adverse conditions of the ability to realize the strong early development of seedlings.

The depth of plowing in the open field rows is 8~10cm, the number of plowing should not be too hard, often keep the ground weed-free, not knotted, the topsoil can be more loose.

Four, eliminate the size of the seedling

The saying goes that big seedlings bully small seedlings, small seedlings do not bear fruit, meaning that the big seedling shape is large, there is a strong fight for light, fight for nutritional advantages, and the weak seedling is in a disadvantageous position under the conditions of the more passive, the gap between the two more and more widening, the formation of such a group structure will not be able to obtain the desired yield.

Therefore, cotton field management should be early hands on the seedlings with eccentric fertilizer, with 0.5% ~ 1.0% urea water solution irrigation (seedlings smaller with low concentration), the method is to load the solution into the sprayer, unloading the nozzle along the tree flow infiltration, each flow infiltration of the solution 150 ~ 200 ml can be.

Five, early treatment of insects

Cotton seedling pests are more serious, different hazard time and hazardous ways, to the cotton seedling growth has a greater impact, but also on the field control to bring some difficulty. The occurrence of some pests spread viruses, some affect the cotton long delayed development, as well as the loss of growth points into the male cotton, or broken stems caused by the headless tree.

Six, bud management

Cotton bud refers to the bud to flower this period of time, the general cotton field from early June to early July. The fastest growing cotton plant during this period, is the period of nutritional growth and reproductive growth and progress. But the nutritional growth is dominated by the expansion of the nutrient body.

1, mid-plowing: mid-plowing during the bud stage can play a role in drought resistance and moisture conservation, weed suppression, promote rooting down, increase ground temperature, and grow steadily.

2, uncovering the film and cultivating the soil: after entering the bud stage, the film should be uncovered in a timely manner to promote root rooting and improve resilience.

3, fertilizer: bud fertilization to meet the cotton hair, take the need for productive shelves, but also to prevent improper fertilization, resulting in cotton futile. Therefore, according to the growth of seedlings applied. Weak cotton seedlings, the use of diseased seedlings 10-15 cm partial application, more application, to improve the growth of bud neatness, while paying attention to the spraying of foliar fertilizer.

4, watering: bud period is generally small rainfall, easy to drought, especially the bottom of the moisture shortage of cotton fields, moderate watering, to improve yield has an important role. Easy to high-yield cotton field, should be appropriately delayed watering time, favorable cotton plant steady growth, promote rooting, enhance drought resistance, such as drought years, watering must control the amount of water, the best use of small water water across the ditch watering, do not irrigate with large amounts of water.

Expanded Information:

Cotton, is the mallow family (Malvaceae) cotton genus (Gossypium) plant seed fiber, native to subtropical. The plant is shrubby and grows up to 6 meters tall in cultivation in the tropics, usually 1 to 2 meters.

The flowers are creamy white, turning dark red shortly after blooming and then fading, leaving small green capsules called cotton bolls. Inside the cotton bolls are cotton seeds, cotton seeds on the wool from the cotton seed skin growth, stuffed inside the cotton bolls, cotton bolls ripe split, revealing the soft fiber. Fiber white or white with yellow, about 2 to 4 cm (0.75 ~ 1.5 inch), containing about 87 ~ 90% cellulose, water 5 ~ 8%, other substances 4 ~ 6%. The countries with the highest production of cotton are China, the United States, India and so on.

The management of the flocculent period:

The cotton from the beginning of the boll splitting flocculent to the flocculent collection of flowers to the end of the time period known as the flocculent period. Ji'nan general cotton field in late August to early September into the flocculation period, the focus of field management in this period is to protect the root, protect the leaves, promote early maturity, prevent early failure, the specific approach is:

1, continue to do a good job of pruning fork. Strengthen the cotton late pruning, can improve field ventilation and light conditions, reduce nutrient consumption, conducive to increased knot autumn peach, improve bell weight, promote early maturity, and can reduce peach rot. The main task is: to reduce the lower part of the cotton plant old leaves and empty fruit branches, and hit the tip of the fruit branch group.

2, spray foliar fertilizer to prevent early failure. Due to the lower temperature in the late stage, the root absorption capacity is poor, should be sprayed with foliar fertilizer, to achieve the purpose of preserving the leaves and increase production, generally sprayed per mu 60 times the solution of urea or 500 times the solution of potassium dihydrogen phosphate solution of 70 kilograms, sprayed every 7 to 10 days, sprayed 3 to 4 times in a row.

3, strengthen pest control. Cotton field late main pests are: blind toon weevil, aphids, bollworm. Blind toon weevil available phoxim, malathion, Ruijinte alternate use; cotton aphids available high depth imidacloprid, acetamiprid spray control; bollworm pyrethroids, mevinphos perchloric spray control. Control time is generally mastered in the morning before 9:00, after 5:00 pm.

4, so that "drought can water, flooding can drain". Cotton fluffing period although not much water, but the appropriate water is still to improve yield and quality assurance, so drought can water, flooding can drain. Watering to small ditch irrigation, avoid flooding, flooding to timely drainage.

5, adhere to the plow loosening. As the saying goes, "tree decline first root decline, decline prevention grasp to protect the root", due to the late cotton field soil crust, affecting the root respiration, nutrient absorption and soil microbial metabolism, should be plowed in the soil, in order to achieve the purpose of preventing the root of the early decline, but should not be plowed too deep, so as not to injure the root, generally 3 to 5 cm can be plowed in the middle.

6, chemical ripening. Late bolls more, can not be timely spit cotton field, can be used vinyl ripening, generally 3 to 5 days after spraying the temperature remains above 20 ℃ or frost 15 to 20 days before the sunny day spray (i.e., perennially in late September to early October). Generally mu with 40% ethylene glycol water 300 to 800 times liquid 60 kilograms, spraying focus on the cotton plant on the green boll.

7, timely harvest. Cotton from cracking to harvesting to 5 to 7 days is appropriate. Too early poor color, low quality, too late the fiber strength decline. Picking should pay attention to the separation of rotten boll cotton, insect-damaged cotton and stiff cotton.

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