Technical opinion on fertilization and fertilization of two wheat fertilization techniques

1. Balanced application of base fertilizer, complex soil conservation and fertilizer increase In recent years, some large households or farm farmers are busy, no application of base fertilizer is the cultivation of wheat, and topdressing is not timely, resulting in wheat seedling growth and tillering delay. In order to promote the early development of the two wheat, it is required to apply the compound fertilizer promoted by the balance of nitrogen, phosphorus and potassium. It is recommended to apply 20kg of BB fertilizer or 20kg of calcium perphosphate with 20kg of calcium phosphate. The free acid in the superphosphate can be partially decomposed by the ammonium bicarbonate. Ammonia gas, reduce the loss of volatilization; and require 150 kg of commercial organic fertilizer per mu, and apply the base fertilizer to replenish the soil and protect the fertilizer. During the autumn harvest this autumn, the weather is rainy. Because of the bad soil, it is required to open the ditch and reclaim soil when the soil is suitable. It is conducive to the dispersion of the mud and the soil, which is beneficial to the fertilizer and improve the fertilizer efficiency.
2. Timely application of seedling fertilizer, and strive to apply the wheat field before the rain to apply the base fertilizer, and emphasize the early application of seedling fertilizer, 20kg of BB fertilizer, wheat field with basic fertilizer, and the best application of seedling fertilizer after the wheat seedlings. Can increase the application of urea about 10kg per mu. In this way, the total application amount per mu of the base seedling fertilizer is equivalent to 9-10 kg of pure nitrogen, accounting for about 55% of the total N amount. Generally, it can meet the requirements for nutrients of the two wheat winter and winter.
3. Discretionary application of wax fertilizer in a timely manner, the second wheat in winter and winter is generally not necessary to apply wax fertilizer, in view of the "frozen drop" to "living winter" stage of this year, the rainy weather, the autumn harvest autumn species delayed the unfavorable situation, the winter before the two wheat points less, so According to the growth of wheat seedlings, for wheat fields with poor growth and insufficient stem count, when the leaf color is yellowish, during the “winter solstice” to “lichun”, the amount of wax fertilizer should be applied in the right amount. It is best to apply the compound fertilizer before the rain. The total content of NPK is 25%) 25kg or urea is 5-8kg. In January, the amount of nitrogen fertilizer should not be too much in the freezing weather to prevent the leaves from being damaged by frost.
4. Because of the seedling application, the jointing and panicle fertilizers are the fastest growing and the most ingesting stage. In previous years, some farmers did not apply or use less panicle fertilizer, which restricted the potential for increasing yield. In view of the late sowing of wheat in the autumn and the lack of tillering before winter, it is very important to pay attention to the application of jointing and booting fertilizer to the seedlings. In general, in late February, late-sown wheat entered the jointing stage in March, when the number of acres of stems was less than 50. 10,000 and wheat are less than 350,000. The joint fertilizer should be applied at the beginning of jointing, and the compound fertilizer with a total NPK content of 25% should be applied for about 20kg, and then the seedlings should be applied to the seedlings. When the main stem is stretched in the third internode, the booting fertilizer is applied once, and the BB fertilizer is 20-25kg per mu; the wheat stem with too many stems and leaves is not light, in order to prevent lodging, the application of the bootet fertilizer to the flag leaf at birth 2,25% compound fertilizer is about 25kg. Cultivating the developed root system is the key to improving the utilization rate of fertilizers. Therefore, the ditch system should be matched, and the ditch system should be cleaned in winter and spring to prevent waterlogging and wet damage.
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