First, cotton cultivation
 (1) Seedling transplanting
  1 , seedling technology: 1 bed: double arch double membrane. 2 nutrient soil preparation: organic fertilizer and soil 2 : 8 ; dry humidity is suitable, the system must be flat, tightly packed, no rotten. 3 seedbed management: divided into four stages, the first stage, before the emergence of seedlings, heat preservation and moisturizing, promote seedlings quickly; the second stage, the first true leaf stage, small ventilation, heat preservation and dehumidification, promote the true leaves, the bed temperature 20-25 °C; the third stage, during the seedling period, the first true leaf appears in the middle of the period --the second true leaf unfolds, heats and prevents disease, lengthens the time of training, does not make the bed temperature rise and fall; fourth At the stage, the third true leaf appeared to transplant. Practice strong seedlings and prepare for transplanting. The standard of strong seedlings before transplanting is three or four slices of true leaves. The red stems are just over half, the roots are not diseased, and the seedlings are short and healthy.
  2 , determine the transplanting period: when the 5 cm ground temperature is lower than 15 °C, the hair root is very slow, when the ground temperature reaches 17 °C, the new root is issued 3-4 days after planting, when the ground temperature reaches 19 °C or above, as long as 1-2 days Send a new root. However, it must be planted in sunny days. After the rain, it will not be planted in the wet, and will not be transplanted before and after the cold current.
  3 , transplanting method: adhere to the ten processes: rowing or laying the line, digging the pit, starting the seedlings. Stabilize half of the soil, apply home fat, and put together the water, the second time to cover the soil and support the cotton seedlings, warming the ground, and spreading the bait to prevent the tiger.
 (2) Cultivation management in seedling stage
 Seedling stage: emergence of a bud
 The focus of seedling management is on whole seedlings, early seedlings, seedlings, and strong seedlings, promoting the normal growth and development of above-ground and underground parts, and laying the foundation for increasing the buds and protecting the peaches.
  Management measures: check the seedlings to fill the gap; early cultivating, deep cultivating, to achieve three must, that is, after the rain will be smashed, the knot will be smashed, there will be grass; stalking the seedlings; prevention and control of seedling pests and diseases. Control method: When planting, mix the seeds with carbendazim WP powder per acre. After the cotton seedlings are unearthed, spray 0.5-0.8 Bordeaux mixture every 7-10 days , and the root-preventing disease can be rooted with 50% anti- bacterial WP. After the cotton seedlings are unearthed, they can be sprayed 500 times as much as needed , or 800-1000 times.
Insects include: ground tigers, locusts, red spiders, etc.
 (3) Cultivation management in the seedling stage
  Bud stage: Cotton from the first bud to flowering, it marks the beginning of the transition from vegetative growth to reproductive growth and vegetative growth.
  1. The standard of strong seedlings in the bud stage: the plant height is one and a half feet, the leaves are thick and dark, the purple poles are seen, and the concave tops are stable (the inverted four leaves are lower than the growth point).
  2 , cultivation points: to resolve the contradiction between the two nutrient consumption centers, to achieve a steady increase in buds.
  3 , measures: deep ploughing, rooting under the tie, promote the seedlings strong, steady application of bud fertilizer, depending on the amount of seedlings, timely pruning, remove the trouser legs, Wangchang cotton field can hit the lower few old leaves; do a good job of the second generation of cotton bollworm The prevention and control of individual Wangchang cotton fields can be sprayed to help the body or control.
  (4) Cultivation and management of flower and bell period
   Flower bell period: from flowering a cotton boll, about 60 days. This period is the most prosperous period in the life of cotton. On the one hand, long branches and long leaves are well-proportioned. On the one hand, it is necessary to constantly bud, bloom, and ring the bell. It is the most intensified period of internal contradictions, so it is the key to cotton management throughout the year. period.
   1. Growth characteristics: This period is a period of strong growth of cotton vegetative growth and reproductive growth. It is also an important period for the formation of yield. It is the key to cotton management throughout the year. At this time, the external conditions are high temperature and heavy rain, although it is beneficial to cotton. Fast-moving, but the management is not easy and prosperous. From the perspective of cotton itself, in this period, it is necessary to set up a high-yield shelf, and to make the cotton stable, improve the ringing rate and reduce the shedding.
   2 , management points: strong plants quickly, vying for the waist.
   3. Management measures:
   1 Pre-flowering period: The focus of this management period is to control and promote the growth of the shelves. The reasons are as follows: First, after seeing flowers, high temperature and flood season, water and fertilizer temperature meet, which promotes cotton for a period of time, and second, cotton itself is too fat. After the longest, the leaves are enlarged, and the leaves are enlarged, mutual shading, which worsens the field illumination and seriously affects the volcanic peaches. The third is that most of the buds in this period are volcanic blooms, which are at the peak of the buds. It is better to compete for more buds than to fight for the buds. Therefore, the management of this period should be to control the spurs to promote the strong, to achieve the goal of competing for the stagnation of the plants, and then to achieve the goal of vying for more than one.
   The specific measures are as follows: First, chase the home fat, and use the peach to make the fertilizer effect play in sync with the peak of the bell. Second, high earth: standard soil ridge height 25-30 cm, smooth the tip surface, steep slope, time can be earth or in early July at the end of June, the third is empty improve chemical transfer: after flowering found flourishing cotton, can Controlling with Zhuangsu should be based on the climate and the growth of cotton at that time, with 5-8 grams of auxin and 20-30 kg of water per acre , which has obvious effects on controlling cotton growth and increasing buds and peaches. Cotton with weak initial flower growth can be sprayed with Fengxianling and urea to promote growth. The fourth is the whole branch control, the first flower is the second stage of the hazard of cotton bollworm, it should be thoroughly controlled, minimize the harm, the early cotton caused by the cotton bollworm damage should be early pruning, leaving a axillary bud in the upper part instead of the main stem For some cotton with a long trend, you can hit 2-3 old leaves and the side of the lower fruit branch to change the light conditions in the field, which has a great effect on controlling the initial flowering period.
   2 late flowering
The main points of training: Striving for stability, promoting the rapid development of the hair, not only to consolidate the hibiscus, but also to fight the foundation of the autumn peach. Provoke fast, mainly the main reason:
   First, after the cotton entered the volt. Generally, a few large peaches have been formed in the lower part. The reproductive growth has been in a temporary position. The possibility of prolonged growth is greatly weakened, and there is no big risk in heavy fertilization. Second, the lower part of the cotton in this period is long peach, the middle part is flowering and ringing, and the upper part is It is the most time to consume nutrients in a lifetime. The consumption of fertilizer is 40%-50% of the total fertilizer consumption during the whole growth period . The lack of fertilizer in this period will affect the premature aging of cotton and directly affect the autumn peach cover. set. Thirdly, this period will be more rapid buds. Most of the buds in this period are developed in mid- August . The autumn is the best time for cotton to form a bell. The bell rate can be as high as 60%-70% , so the speed is fast. Zeng Lei will lay a good foundation for adding more autumn peaches. Therefore, this period of rapid development has both realistic effects and far-reaching significance.
   Management measures are:
   First: re-apply flower bell fertilizer, when holding 2-3 large peaches in the lower part of cotton , you should chase a flower bell fertilizer, and the fertilizer should be applied to the lower leg of the soil stalk. About 30 centimeters from the cotton plant , in order to prevent the root injury, it is best to use it for deep application. This fertilization has certain commonalities. Whether it is normal growth, prosperous and growing cotton must be fertilized, and prolonged cotton can be fertilized. Control, called water to raise peaches, and more to fight autumn peaches to make up for the output.
   Second, the whole branch: After entering the volts, it is necessary to fight the top of the top according to the growth of the cotton in stages. The topping of the fire should be very strong, and the score of eight points, leaving two points, that is, grasping the growth potential of cotton It will fall but there is still room for it. Above after a topping Kunieda extendible to 20-30 cm, if there are three sections, two or more junction bolls is desirable, is increased flowering bit section 6-7 to the penultimate stage of fruiting branches, i.e., growth potential began to decline described It is also suitable for the topping time. Other pruning such as playing the heart, going to the empty branches, cutting the old leaves, etc. can be flexibly controlled according to the growth of cotton, and the growth is strong, and the field can be heavier. On the contrary, go less. Pruning can change the light in the field and promote the formation of bells.
   Third, thoroughly control the three generations of cotton bollworm and Fuxi.
   Fourth, clear the ditch, do a good job in preventing flooding and stain prevention, and ensure the normal growth of cotton.
Second, cotton fertilization
  (1) Fertilization principle
   1 , base fertilizer, early application, light application of seedling fertilizer, stable application of bud fertilizer, heavy application of flower bell fertilizer, supplement application of top fertilizer.
   2. The amount of fertilizer applied in different cotton days should be determined according to the yield level and soil fertility. Generally, 100 kg of lint per mu is produced, about 20-23 kg of nitrogen , 10-16 kg of phosphorus , and 20-28 kg of potassium .
  (2) Fertilization technology
   1. Apply enough base fertilizer. Timely deep cultivation. Level the land. Applying organic fertilizer per acre along with the preparation  Kg; half a month before transplanting cotton seedlings, apply 45% Shida Zhuang compound fertilizer per acre 25-30 kg or 45% compound fertilizer 25 kg, ammonium bicarbonate 20-25 kg.
   2 , Shimi Miao fertilizer. Fertilize early in the seedling stage, the amount of fertilizer should be less, and strive to be stable and early. For plots with less base fertilizer, after slowing down the seedlings, apply 2-3 kg of urea per acre .
   3 , skillfully apply bud fertilizer. It is a combination of organic fertilizer and inorganic fertilizer. Strive for a steady and multi-peach. Apply 5 kg of urea per acre .
   4 , Shihua bell fertilizer. Reapply quick-acting nitrogen fertilizer during flowering and bolling. Apply 45% Shida Zhuang compound fertilizer per acre to 10-20 kg and urea 10-15 kg. After the application, it is necessary to timely watering and chemical regulation according to the weather conditions and cotton growth.
   5 , apply top fertilizer. According to the growth of cotton, the application of autumn peach fertilizer, the growth of the field is mainly based on foliar spray, adding a stamina to the single bell. In the middle and late August , foliar application was carried out with a mixture of 0.3% potassium dihydrogen phosphate and 1% urea. Spray even 3-4 times. Every 7-10 days interval to prevent premature aging.
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