The technical route of this spring's field management is: "Based on drought resistance, control and stability, promote weak and strong, due to the conditions of seedlings, strengthen classification and guidance, scientifically manage fertilizer and water, promote early growth and rapid growth of seedlings, and accelerate the transformation and upgrading of seedlings. To build a reasonable group and lay a foundation for a bumper harvest.†Recently, the Shandong Provincial Department of Agriculture formulated the technical opinion on wheat spring management in the province in 2014, requiring the municipal agricultural bureaus (the Agriculture Committee) to focus on the following technical measures: First, the suppression of the plan, increase the temperature and protect the early development Although most of the wheat fields in our province are better in the past, some wheat fields have developed mild drought, and after the spring, as the temperature rises, the soil evaporation increases. When the spring precipitation is less, it is easy to cause large-scale drought. occur. Especially for the wheat fields with small populations and weak individuals, it is necessary to take the shovel as the primary measure for the management of wheat fields in early spring. In addition, watering in the spring or raining should be timely. When you are squatting, you must make sure that you are fine, even, flat, and smooth, without leaving any waste, not pressing the wheat seedlings, and not weeding, to improve the effect of the stroke. Spring cracking can crush the clods and seal the cracks, so that the topsoil of the soil that has been frozen and thawed in winter is solid, promotes the close connection between the soil and the roots, strengthens the absorption and utilization of roots, and reduces water evaporation. Therefore, for the hanging root seedlings, the long seedlings and the extensive cultivation, the sloping land, and the straw returning to the soil, the land must be repressed after the early spring soil freezing to calm the soil, bridge the cracks, reduce water evaporation and avoid Cold air invades the wheat seedlings near the tillering section; for the dryland wheat fields without irrigating conditions, timely suppression after soil freezing can promote the movement of the lower layer of soil to promote the mites, protect the sorghum and drought resistance; The suppression before and after the rise of the body can inhibit the growth of the aboveground part, and play a role in controlling the growth. In addition, the suppression should be combined with the slashing, generally it is first pressed and then smashed, in order to achieve the effect of upper Panasonic, lifting and protecting the temperature. Second, early action, watering and drought protection For all kinds of wheat fields that have not been poured over winter water, have poor sensation and have symptoms of drought, it is necessary to do so early and pour "protective water". When the average temperature of the day is stable at 3 °C and it can be infiltrated quickly after watering in the daytime, it is necessary to pay close attention to watering and seedling protection. The earlier the time, the better. When watering, it should be noted that small water irrigation is needed to avoid flooding of large water, water accumulation on the surface, and ground freezing at night. It is necessary to follow the drought first and then light, first sand the land after the clay, first weak seedlings and strong seedlings, the local conditions should be watered. Individually, due to drought, frozen yellow seedlings, dead seedlings or de-fermented wheat fields, about 10 kg of urea should be applied per acre combined with watering. Appropriate amount of diammonium phosphate is added to promote secondary root squirting, increase tillering in spring, and increase tillering rate. For dryland wheat fields without irrigating conditions, spring management should focus on refining and lifting, and after the early spring soil is re-slurry or drizzle, nitrogen fertilizer is applied by chemical fertilizer or ditching, and the number of ears per ear and the number of grains per ear are increased. Increased grain weight and increased yield have outstanding effects. The average mu is about 12 kg of urea. Do not apply phosphate to the base fertilizer. Third, highlight the classification guidance, do a good job of fine management of fertilizer and water For plots that have been overwintered with winter water, or for plots with more precipitation in the previous period and better current moisture conditions, fertilizer and water management should be tailored to local conditions and classified. a type of wheat field The group of a type of wheat field is generally 60-800,000 per acre, mostly belonging to strong seedlings. In terms of management measures, attention should be paid to the combination of promoting and controlling, so as to increase the rate of tillering and the emergence of large grains. The management of water and fertilizer in such wheat fields should emphasize the shifting of nitrogen fertilizer. For a type of wheat field with a high level of soil fertility and suitable sowing and a population of 700,000-800,000, it is necessary to topdress and water in the middle and late stages of wheat jointing to obtain higher yield; for the level of soil fertility, a group of wheat fields with a population of 600,000-700,000 Fertilizer management should be carried out at the beginning of wheat jointing. Generally combined with watering acres to chase urea 15 kg. Second wheat field The group of the second type of wheat field is generally 45-600,000 per mu, which is a transition type between weak seedlings and strong seedlings. The focus of spring field management is to promote the growth of spring tillers and increase the tillering rate. Generally, the fertilizer and water management is carried out during the period in which the wheat is raised, and 15 kg of urea is used in combination with the watering mu. Three types of wheat fields The three types of wheat fields generally have a population of less than 450,000 per acre, and most of them belong to late seeding and weak seedlings. Spring field management should be based on promotion. As long as the glutinous wheat is acceptable, it should be avoided in early spring to avoid lowering the ground temperature and affecting the soil permeability to delay the growth and development of the wheat seedlings. Under normal circumstances, the spring topdressing should be divided into two: the first time in the middle of the greening period, when the 5 cm ground temperature is about 5 °C, the application of 50% of the fertilizer fertilizer and the appropriate amount of diammonium phosphate to promote tillering and root growth, Increase the tillering rate of tillers; the remaining 50% of fertilizers are to be applied at the jointing stage to promote wheat development and increase the number of grains per ear. 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Wheat spring management these should be done well