First, pre-broadcast preparation 1. Selection of the selection of suitable new pruning of the new varieties, such as JM9685, high resistance 208, etc., continuous drying before sowing 3 days to 5 days (not on the cement floor), to increase the germination rate. 2. The soil preparation site must be properly ploughed before sowing in order to ensure that all seedlings and strong seedlings are planted early. Bottom muddy water is completed 10 to 15 days before sowing, which can ensure stable ground temperature at the time of sowing. After ploughing and then watering, promote deep plowing 20cm ~ 33cm, preferably without a rotary cultivator, this can be increased by 6.5% ~ 18.3% compared to shallow ploughing (10cm ~ 17cm), especially the increase in production of clay, sandy loam soil, no wet plow Wet. 3. Apply base fertilizer Every 667 square meters of organic fertilizer 4kg ~ 5kg + phosphate diamine 25kg ~ 30kg + potash 20kg + urea 20kg + zinc sulfate 1kg + boron 0.5kg. Second, sowing (before and after April 20) 1. Suitable sowing date for the sowing date after the end of the frost, generally in the middle and south of the cotton area in mid-April, the eastern part of Tangdong (Tangshan, Langfang) for the end of April to May 5, requiring 5cm Ground temperature, stable at 15°C or above (above 3 days). In addition, due to difficulty in absorbing cotton seed in the saline-alkali cotton fields, sowing can be delayed for 5 days to 10 days. 2. sowing depth 2cm ~ 3cm (clay to shallow). Plastic film coverage, usually 20% to 30% more than direct production, it is best to point seed after the cover film. Acetochlor or trifluralin or ditergentamine and other herbicides are sprayed on the ground to cover the membrane. 3. The suitable planting potential of the species suitable for flying and sparse planting should be greater than that of conventional cotton fields, and it should be 15% to 20% wider than the row spacing of conventional local pruning cotton fields. It is advisable to reduce the number of plants by 20% to 40%. The first-class cotton fields were planted in small and large rows with a spacing of 50cm, a large row spacing of 100cm to 110cm, and 667 square meters with a number of 1,800 to 2,500 plants. It is best to use the "wide ridge - isometric - single row - mulch - hole sowing" method (line spacing 100cm, spacing 27cm ~ 40cm). 3. Seedling management (from the end of April to the middle of June) 1. Check the seedlings to fill the seedlings 2. The seedlings between the seedlings and the seedlings are required to be carried out after the seedlings are raised, to the extent that the leaves do not overlap. In the case of stable temperature and light pests and diseases, 1 to 2 true leaves will be fixed. On the contrary, it should be set at 3 true leaves. You can also set seedlings before and after May 20. 3. The cultivator farmer has: "No loose soil, hard to live roots." Current cotton seedlings, shallow cultivator 3cm ~ 5cm, after the gradual cultivator depth 7cm ~ 10cm, in order to increase the temperature, promote the growth of cotton seedlings, so that cotton seedlings warm root ventilation. 4. Dressing fertile soil fertility, base fertilizer in the increase of nitrogen fertilizer in cotton fields, seedlings can no longer topdressing nitrogen fertilizer. Early, thin, saline and non-basic cotton fields should be applied early, light application of available nitrogen fertilizer, 667 square meters of urea 3kg ~ 5kg. 5. Watering is usually done in the cotton field at the foot of the plant before seeding. Watering is not necessary during the seedling stage. In case of drought, small water can be poured or guttered alternately. 6.1 Prevention and treatment of diseases at seedling stage: Two of carbendazim, agricultural streptomycin, ethicin, and potassium permanganate can be used. Spraying foliar fertilizer is ideal. 2 Prevention of ground tigers: the use of bait trapping, monocrotophos (or 1605), water, fresh cotton cake powder 1:100:100, mixing and boring after 4 hours, in the evening, Shun cotton ridge spread, 667 square meters Use 3kg to 5kg. 3 prevention of warts, warts: can be used 10% imidacloprid or 3% acetamiprid plus acid 20% broom net spray control. Fourth, bud period management (in mid-June to mid-July) 1. Watering the key water In mid-June, watering is the key measure to prevent premature aging of cotton. After the wheat is poured, water is poured. Before pouring, the mulch is removed. After pouring, the cultivator works in the deep cultivator and cultivates the soil, promotes the roots to lower and strengthens the cotton. It has the ability to fight drought and resist premature aging. 2. The fertilizer is fertile, the foot is full, and the vigorously growing cotton field is not top-dressing or less. top dressing. For the cotton field with insufficient base fertilizer and weak growth, 667 square meters chased 10 kg of urea and 10 kg of diammonium phosphate. 3. Chemical control and control can increase the pest resistance of insect-resistant cotton, shape the ideal plant type, increase the boll weight, 8 to 9 leaves of the initial bud, according to cotton plant growth 667 square meters with 0.5% Conduct the first chemical control. 4. Timely and large-scale planting of large-scale, post-emergence weeds 3 to 5 leaf stage spraying cover grass can be avoided cultivator, pruning, no burping, keep leaf branches. 5. From the beginning of the bud stage, spraying foliar fertilizer once every two weeks for a total of three times, 667 square meters of borax, zinc sulfate, hydrogen amino acids (or raw honey) each 100g, can increase 50kg seed cotton. 5. Management of flowering and bolling period (mid-July to mid-August) 1. Reapplying the boll-bell fertility boll is the largest period of cotton nutrient consumption. Hua Ling Fei should be based on available nitrogen fertilizer, fertilization time is generally carried out in the early flowering period (July 5 to 15), growing vigorously can be carried out when sitting 1 to 2 peaches, 667 square meters with urea 15kg ~ 20kg + Potash 5kg. 2. Timely drainage and irrigation, prevent drought and flood control generally do not rain for 10 days, or at noon when the wilt of cotton leaves should be watered, combined with cultivator soil, alternate ditch pouring, can not flood irrigation, in case of rainy days, pay attention to row of oysters (low in the cotton fields Drenching water. 3. Adjusted the timing of early flowering, 667 square meters with a contractile amine 0.8g ~ 1g. 2 Full flowering period, 667 square meters with condensation amine 1g ~ 3g. 3 After the topping 6 days to 8 days, 667 square meters with salicylamine 3g ~ 5g. 4. Topping only 1 time, the top time is appropriate around July 22, weak to grow early, strong to postpone 3 days to 5 days, one-time will be the main stem, the top of the leaves are playing Go, emphasis on playing a small top, early topping, requiring the main stem to grow and then grow 2 to 3 fruit branches. Topping is an important measure to achieve the top of autumn peach. 5. Pest control 1 The control of Fuxi can be controlled by insects Mika monocrotophos, for the control of spider mites with alfalfa; 2 For the bollworm, the general annual growth period does not require prevention and control, serious year in the third generation of egg hatching During the prosperous period (July 20th to 28th), a mixture of 2.5% Kung Fu Chrysanthemum 1000-fold and 50% phoxim 1000-fold can be used for 1 to 2 treatments to simultaneously treat Fuxi and cotton leafhoppers. Practice has proved that this side can achieve the purpose of using a few drugs and pests to cure the disease, save labor, and have good control effect. 3 For cotton aphids, it is better to use 50% phoxim plus 1605 or cypermethrin 800 times. 6. Later-stage foliar spraying Fertilizer spraying foliar fertilizer, in late July to early August, to prevent red stem blight, improve quality and production, with potassium chloride, urea and borax mixed liquid 2 times, interval 5 days ~ 7 Days, the specific proportion: potassium chloride 0.5kg + urea 0.3kg + 0.01kg borax, spray time is sunny afternoon as well, so as not to "burn the leaves." 6, Botou period (from late August to early November) 1. Early watering in a timely manner to ensure fiber development, and promote the big bell. 2. Ripening, on late-maturing cotton fields, from September 28 to October 5, sprue and calcium superphosphate.
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