Yue Ge Fertilizer Network comprehensive news, not long ago, China's Yangtze River valley cotton area has a serious flood disaster, cotton is now in the bud and flowering period, often bring great losses to cotton production, resulting in soil loss, crop length Or lodging, etc. If the management is not strengthened in time, it will seriously affect the yield and quality of cotton. Then, how should we remedy after the disaster? For this reason, Yu Hongzhang, a senior agronomist of the Agricultural Bureau of Xiaogan City, Hubei Province, was invited to make a move for the reference of farmers. Delayed application of peach fertilizer The normal climate of the year, cotton on August 5 to 10, the average plant should have more than 10 peaches, more than 20 or so, because from late July to early August is the southern cotton cotton sitting peach At the peak, each plant can make 0.5 to 1 peach per day. According to our multi-point survey of cotton fields in the southern cotton area from August 5 to 6, the average number of peaches per plant is less than 10. This is because, before July 20 this year, it lasted for a long time and the rainfall was heavy. The rate of buds and detachment of cotton was as high as 30% or more, followed by the high temperature and dry weather above 35 °C in late July, more than 10 days, of which more than 40 °C. There are 2~3 days, so I don't have to sit in front of the peach and the early peach. In order to recover the damage caused by the disaster, it is necessary to delay the application of peach fertilizer in cotton field production, so that it can be mixed with peach and autumn peach. Cotton is a plasticity and compensatory crop. The vegetative growth and reproductive growth can go hand in hand. The space for the early stage of peach deficiency is very large. The reasons are as follows: First, the proportion of cotton three peaches (Fuqian peach, Futao, Qiutao) can be flexibly adjusted according to different weather and cultivation methods. In the early stage of sitting peach deficiency, the proportion of late peach and autumn peach will be increased; Second, the effective peaching period of cotton is still about one month. The flowers opened before September 10 are completely effective. The rate of peach formation is also very high, generally about 20 percentage points higher than the peach rate in the previous period; Third, the time for applying peach fertilizer can be delayed appropriately. The time for root topdressing can be extended to around August 20th. The top dressing is effective until September. The fourth is the application of peach fertilizer, which is used in the whole process of cotton fertilizer. The ratio is small, but it is very obvious to improve the yield. What kind of fertilizer should be used for peach fertilizer? From the perspective of the effective content and release rate of fertilizer, it is better to use urea, which is 15~20 kg per mu. Peach fertilizer advocates the application of ditching or hole application, and should not be applied to the field. It is prone to autumn drought in the late rainy year. Pay attention to drought, ditches and ditches, dip in water, adjust fertilizer with water, and fully improve fertilizer utilization. In the middle of September, the growth of cotton has a premature aging, and it can be sprayed with 1% urea solution 1 or 2 times, or mixed with 1% calcium superphosphate. It can also spray 0.2%~0.3% potassium dihydrogen phosphate solution. From the Daejeon survey, we also saw that some cotton have obvious symptoms of boron deficiency: one is the light brown band on the petiole; the other is the upper fruit branch; the third is the leaf is yellowish and the leaf is thin; the fourth is the bud Shedding is intensified, and some flowers are poorly pollinated. This type of cotton indicates that the application of boron fertilizer in the base fertilizer is insufficient, and it is necessary to spray the boron fertilizer in time. Generally, it is preferable to apply 0.1% to 0.2% of the speed-boron boron, and the latter can spray 2 to 3 times. Zinc-deficient cotton should be sprayed with 0.2%~0.3% zinc sulphate solution 2~3 times. Fertilization and chemical control Rainfall in the southern region before the end of July was rare in the past 65 years, and most of the cotton was affected by different levels of flooding. Recently, I received several calls from several farmers' friends. After the flood, most cottons are slow to develop, and some cotton is prosperous. Can it be chemically regulated? The answer is yes. The chemical regulation technology of cotton is based on the pursuit of high-yield cotton targets. At different stages of growth, the application of chemical control means to coordinate the orderly operation and rational distribution of nutrients in cotton plants, regulate the growth and shape, and shape the ideal high-yield plant type. . This new technology has been accepted by farmers in the cotton region through years of promotion and application. The unique role of chemical regulation in cotton yield increase is irreplaceable by any other technology. However, in the cotton production process, due to the breadth and depth of the popularity of this technology, there are often some mistakes in the operation of chemical regulation. First, some farmers do not know the timing of application, and only after the flowering of cotton is late Spraying Second, the application concentration is not appropriate, or the dosage is too small, or the concentration is too large; the third is that the conversion dose of the liquid crystal dosage form is not precise enough, and the randomness is very large; the fourth is to confuse the concept of plant growth regulator and liquid fertilizer, and adjust As a fertilizer, the agent no longer topdresses. Under the environmental conditions of high temperature and drought immediately after the floods this year, there are many elderly laborers in rural areas. How to apply plant growth regulators scientifically is particularly important. In order to better exert the application effect of plant growth regulators on cotton production, chemical adjustment and control techniques must be applied correctly. One must clarify the type of chemical regulator. There are many varieties of chemical regulators that can be applied in agricultural production, but most of them are used in the production of cotton, which are promoted plant growth regulators "802", preserved, or delayed plant growth regulators such as ketamine. Amine, auxin, etc. The former can accelerate the growth process of cotton, and the latter can control the growth rate of cotton, promote stable growth, and multi-peach peaches and knot peaches. Therefore, the production should be based on the growth of cotton to determine the choice of different types of regulators. Second, timely application of chemical regulators. For the stagflation and root dysplasia cotton that occurs after flooding and drought, it is necessary to spray "802" or irrigate the roots in time, or spray the sputum (alumin lactone). For cotton with more fertilization and stronger growth in the early stage, from Shenglei to the topping stage, it is necessary to spray ketamine, amines, and melanin in time to prevent madness and capping. Third, the dosage should be properly formulated. Apply "802" foliar spray, the concentration is 1:3000~4000 times, spray 2~3 times. The root of the irrigation root is “802â€, and the water is 500~600 kg watered along the cotton root. The sputum is mainly used for spraying, 10 ml per mu, and 30 kg of water. The application of ketamine, amines, and melanin should be applied in the light and heavy, small amount of times. For example, if the initial flowering period is 4 grams per mu, or 2 grams of ketamine or 8 ml of auxin, spray 25~30 ml with water. In the middle and late stages of cotton growth, according to the growth, the amount is increased. The ketamine is crystal, the effective content is 98%, the auxin is liquid, the effective content is 25%, and the conversion ratio is 1:4, which cannot be blindly increased or decreased. Fourth, after spraying the plant growth regulator, the photosynthetic efficiency of the cotton leaves is improved, and the leaf color is quickly turned into a thick green color, and the vitality is enhanced. However, the regulator is not a liquid fertilizer, and it cannot replace the top dressing. It should be topdressed according to its normal fertilizer requirement to prevent premature aging. For example, the cotton that enters the flowering period should be chased by the flowering manure. The high-level ternary compound fertilizer per acre is about 30 kilograms. If the potassium deficiency is serious, it should be applied with about 15 kilograms of potassium fertilizer. For boron deficiency, spray speed boron twice. To enter the peak period of the bell, it is necessary to apply the peach fertilizer, and the urea can be applied 15~20 kg per mu. Grasping the fertilizer and promoting transformation Recently, agricultural technicians found in many places in Xiaogan City, Hubei Province, that some cotton showed signs of premature aging. According to the on-site investigation and exchanges with some farmers, first, some farmers' cotton did not apply bottom (basic) fertilizer, and the remaining nutrients in the soil were limited; Second, the rainy time is long this year, and the nutrient loss in the soil is more; the third is that the topdressing is not timely enough, the nutrient supply is in short supply; the fourth is the soil compaction, and the root development of the cotton is inhibited if the soil is not cultivated in time. Can this kind of premature aging cotton return to normal growth through transformation, can it still capture high yield? The answer is yes, the reasons are as follows. First of all, cotton has the habit of infinite growth. When the ecological environment of temperature, light, water and nutrients can meet the growth and development needs of cotton, the premature aging cotton can be transformed quickly after the fertilizer and water are satisfied, and new fruit branches and young buds grow, and the flowering results continue. Cotton has a longer growth period, and there are about 40 days in the effective bud period. The effective flowering period is more than two months. Cotton has a strong ability to compensate, and it can be properly managed to recapture the loss of pre-developmental deficits. Production practice has repeatedly proved that weak seedlings can be converted into high-yield cotton because cotton is very malleable during development. Secondly, to promote the transformation of cotton seedlings. In order to make the early decline of cotton seedlings early transformation, in the field management should promote the main, promote the combination of control, as soon as possible to take the cotton shelf. One can produce 75 kg of bio-organic fertilizer per mu, and 50 kg of ammonium bicarbonate and 15 kg of potassium fertilizer for flower and bell fertilizer application, which promotes long and stable; Second, when there are 2 to 3 peaches per plant, 20 to 25 kilograms of high-content ternary compound fertilizer per acre, and 5 to 10 kilograms of potassium fertilizer can be used as peach fertilizer to meet the needs of cotton concentration. Three can be sprayed with a plant growth promoter "802" 4000 times solution or 0.01% of a sputum (alumin lactone) solution, which can effectively accelerate the cotton growth process. Third, we must pay close attention to comprehensive supporting management. First, deep ploughing, deep fertilization, and high-cultivation of soil should be used to improve the utilization rate of fertilizers. Second, it is necessary to deepen the ditch, so that the cotton fields can be drained and filtered as soon as possible to reduce the loss of fertilizer. Third, when cotton is put up for a high-yield shelf, it is necessary to pay attention. The use of delayed plant growth regulators for chemical regulation to prevent prolonged; fourth is to prevent third-generation cotton bollworm and blind mites harm. (Yu Hongzhang text / map) This article URL: How to apply fertilizer and remediation after cotton encounters flood disasters We can create the local Japan taste with Lishida Unagi Sauce!It is made from high quality non GMO soy sauce,sugar,wheat and other ingredients.It's mainly used for coloring and seasoning,especially great for seasoning grilled unagi,barbecue,grilled seafood and as a dipping sauce for sushi and salmon. Japanese Sweet Unagi Sauce,Unagi Sauce For Barbecue KAIPING CITY LISHIDA FLAVOURING&FOOD CO.,LTD , https://www.lishidafood.com