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Key Field Management Techniques for Cotton During the Squaring and Flowering-Boll Stages
Management of cotton during the squaring and flowering-boll stages centers on regulating water and fertilizer, combined with measures such as intertillage, chemical regulation, and pruning. The promotion and control techniques should be applied reasonably, combining promotion with control, to achieve strong plants with steady growth, build a high-yield framework, increase boll setting, reduce shedding, and achieve a full set of three bolls. I. Fertilizer and Water Management During the squaring stage, cotton plants are required to grow steadily, so fertilizer application should be steady and skillful, with controlled use of nitrogen fertilizer. Cotton fields with medium to high fertility should not be fertilized further. If soil fertility is poor or the base fertilizer is insufficient, generally apply urea at 5-7 kg per 667 sq m.
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Detailed Explanation of Key Points of New Cotton Field Management Techniques
1. Early hoeing and ridging: Cotton field management emphasizes earliness; the means to promote strong seedlings and early development is early hoeing and ridging, more hoeing and ridging, increasing soil temperature, strengthening roots and seedlings to promote early development. 2. Topdressing: After seedling thinning, topdress 10-15 kg; after squaring, topdress 20-25 kg. 3. Fine pruning: Cotton pruning is the key to increasing cotton yield. Generally, topping is done on July 5-10, and side-shoot topping on July 15-20, following the principle of not waiting for the time when branches have reached the standard, and not waiting for branches when the time has come. Leave the number of fruit branch segments according to variety requirements,
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Fine Management Techniques for Cotton at the Seedling Stage to Build a Solid Foundation for High Yield
Cotton seedling-stage management is crucial, as it directly determines whether the cotton can build a good framework for high yield and whether the reasonable transition from vegetative growth to reproductive growth can be properly adjusted. The principles of seedling-stage management are: first ensure a full stand, and on this basis cultivate strong seedlings and promote early seedling development. The key points of seedling-stage management are: check the seedlings promptly after sowing, and if rotten sprouts or rotten seeds are found, reseed in time. Thinning and final thinning: thinning can be done in two rounds. The first is after the seedlings emerge evenly, keeping strong seedlings and pulling out weak and diseased ones. The second is at the 1-2 true leaf stage, and final thinning is at the three-leaf stage, when the base of the stem has already become lignified and its ability to resist adverse environments has increased. Intertillage: through intertillage, soil temperature can be raised, water evaporation reduced, root growth promoted, strong seedlings cultivated, and early development encouraged. At the seedling stage, intertillage is generally carried out 3 times. The first is at the cotyledon stage, together with thinning. Early intertillage can raise the soil temperature around the seedling roots, promote early root development and increase absorptive capacity, so that true leaves emerge earlier and seedling stress resistance is enhanced. It can also break up soil compaction and help preserve soil moisture. The depth of this intertillage is 4-5 cm. At this time it is already June, the temperature is rising, the root system is already relatively strong, and aboveground growth is accelerating. Deep intertillage can disperse surface soil moisture, promote roots to go deeper, and control internode length, which is even more important in relatively fertile cotton fields. Fertilization: growth at the seedling stage is relatively slow, and topdressing should be based on seedling condition, applied early, lightly, or not at all. Irrigation and drainage: in single-crop cotton fields in northern cotton regions, if enough pre-sowing moisture irrigation has been applied, do not water at the seedling stage; do a good job of intertillage and moisture conservation. If watering is truly needed, then water lightly with a small amount, irrigating every other furrow, and after watering carry out intertillage to conserve moisture, improve aeration, and raise soil temperature. At the seedling stage, the suitable field capacity of the soil is 55%-70%. Disease and pest control: the main diseases and pests of cotton at this stage are cotton Fusarium and Verticillium wilt, cotton aphids, cotton bugs, cotton bollworms, cotton red spiders, and so on.
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How much does management level affect Gastrodia elata yield?
Strengthening management is an important measure for obtaining a high yield of Gastrodia elata. The main thing is to keep temperature and humidity under control. During the growth of Gastrodia elata, the temperature should be kept at 20-25°C and must not exceed 25°C. The optimum humidity for the growth of Gastrodia elata is 65% and must not exceed 70%. It is best to add some grain and vitamin B1 to the water used for watering, that is, to water with nutrient water. In addition, ventilation and shading are also needed. Various weeds and fungi as well as damage to Gastrodia elata from rats, mole crickets and the like must be prevented and controlled. In short, the requirement is to advocate "early" in planting Gastrodia elata, demand "good" in the fungus sticks, and keep temperature
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Winter Management Methods and Technical Key Points for Gastrodia elata in Jilin Province
Jilin Province has a long, cold winter, during which Gastrodia elata is in a dormant state. Preventing freezing damage and rot in Gastrodia elata is the key to achieving a bumper harvest. ① Management of pit-cultivated Gastrodia elata. Pit-cultivated Gastrodia elata usually overwinters outdoors. Before the onset of winter, the soil moisture in the Gastrodia elata pit should be kept at 30%-40%, and excessively wet conditions and water accumulation should be prevented. Drainage ditches should also be dug around the Gastrodia elata pit to prevent snowmelt water from flowing into the pit. Before freezing, cover the Gastrodia elata pit with a 15 cm thick layer of leaves or weeds, then add 20-30 cm of cold-protection
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Key Technical Points for Summer Management of Gastrodia elata in Northern Shaanxi
Gastrodia elata prefers to grow in warm, moist sandy (or leaf-mold) soil and has relatively strict requirements for temperature and humidity. However, the area along the Great Wall in northern Shaanxi lies in the mid-temperate zone, where summers are hot and dry with little rain, which is unfavorable for the growth and development of Gastrodia elata. To achieve a good harvest of Gastrodia elata, the measures that should be taken in summer management are: (1) Build a shed for shade. In summer, especially at noon during the hot dog days, due to direct sunlight, the ground temperature at 20 cm below the surface (already close to the Gastrodia elata layer) reaches as high as 30-37°C. To keep the ground temperature at 20-28°C
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Detailed Explanation of Key Cultivation and Management Techniques for Taiwan Sweet Peach
Taiwan Sweet Peach, also known as Red Peach, is a deciduous fruit tree belonging to the small-to-medium fruit category. Without fruit thinning, the single fruit weight at cultivation is around 100 grams; with artificial fruit thinning, the single fruit weight can increase to 150 grams, and the maximum fruit weight can reach 250 grams. In trial plantings in Fogang, Heyuan and other areas of our province, the fruit ripening period falls in mid-to-late May. When ripe, the fruit is bright red, crisp, refreshingly sweet, and excellent in flavor; it is firm, stores well, and the flesh does not separate completely from the pit. Planted in the current year, the per-plant yield can reach over 3 kg the following year, making it a
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High-Grafting Methods and Supporting Management Techniques for Nanguo Pear
In recent years, with the promotion of the Nanguo pear (Dananguo, Hongnanguo) series cultivars, in order to quickly adapt to changes in the pear cultivar market, we carried out high-grafting improvement on 3,500 mixed pear trees in 2002. Because post-grafting management techniques were in place, the survival rate of high grafting that year reached 95%, the tree vigor was restored the following year, and by the 3rd year the original pear orchard yield was basically restored, achieving good results. The high-grafting methods and supporting management techniques are described below. 1 High-grafting methods 1.1 High-grafting period Semi-arid land in northwestern Liaoning
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Spring management of garlic after overgrowth must start early
For garlic sown in autumn 2006, temperatures from planting through early December remained higher than in previous years, which accelerated the growth of the garlic sprouts. Before winter, the garlic grew to 7-10 leaves (the optimal seedling age for overwintering is 5-7 leaves), showing overgrowth, and had already begun "mother bulb rot," with pest problems occurring. As a result of overly rapid growth, the garlic suffered from poor nutrient accumulation, reduced stress resistance, slow greening after the New Year, severe disease, and reduced high-yield potential. In spring, garlic must complete a series of growth processes including greening, vigorous seedling growth, garlic scape elongation, and bulb enlargement. On the basis of applying sufficient base fertilizer, garlic in spring
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Detailed Explanation of Garlic Growth Characteristics and Management Strategies in April
Growth during this period involves both vegetative growth and reproductive growth advancing together. In the early stage, rapid vegetative growth predominates. The garlic plant's growth volume has ample space, growth accelerates, and the vegetative growth of garlic is fully developed. The number of leaves, leaf assimilation area, and root number reach their maximum values for the entire life cycle. After mid-month, scape growth predominates, and the bulb is in the early stage of expansion. By the end of this period, the total root number can reach 120-150 roots, and the depth of penetration into the soil can reach 40-50 cm. All leaves of the plant have formed. During this period, the growth volume of all plant parts is at its greatest, requiring sufficient
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