Wheat spring management pay attention to water and fertilizer
From the perspective of water saving, it is considered to promote the spring watering of wheat in two fields, and the normal wheat field that has been poured over the frozen water can not be poured back into the green water if the soil is good. The spring time of wheat should be in the jointing stage (from late March to early April), spring two water in the heading and flowering period (from late April to early May), the specific watering time depends on the wheat seedlings soil moisture And set. If the water pouring conditions are good, three waters can be poured when the weather is dry.
Fertilization
Select fertilizer: low-yield wheat field can be applied to single nitrogen fertilizer such as urea or ammonium bicarbonate; medium and high-yield is recommended to use nitrogen and potassium topdressing exclusively for soil testing and formula fertilizer enterprises. Specially for nitrogen and potassium topdressing is based on the law of wheat fertilizer requirements, focusing on the proportion of various nutrient ratios and nutrient forms. The experiment proves that due to the low potassium content in most soils, the use of a single nitrogen fertilizer such as urea-ammonium, the wheat roots are underdeveloped and easy to fall. The use of special nitrogen and potassium topdressing can promote wheat root development, lodging resistance, enhance wheat drought resistance, cold resistance, disease resistance, increase 1000-grain weight, and significantly increase yield. The same value of input for the use of nitrogen and potassium top dressing than urea can increase production of 50 to 100 kg per mu.
Proportion and content of nitrogen and potassium topdressing: 30% (25-0-5), 30% (22-0-8), 30% (20-0-10), different potassium content according to soil potassium deficiency Potassium topdressing. It is recommended to chase 25~30 kg per mu.
Fertilization time: 1. For weak seedlings in the wheat field, the spring management should be based on promotion, combined with pouring back the green water to return to the green fertilizer, and the second time to catch the fertilizer when the jointing. 2. For general wheat fields, spring management measures should be combined to promote control. For plots with low soil fertility, they can be topdressed twice during the jointing period; for plots with strong soil fertility and strong growth, the fertilizer should be applied at jointing stage, preferably after the first section of wheat is fixed. Shi. 3. For Wangchang wheat fields, the spring management measures should be based on control. Fertilization should be applied at the end of jointing. Do not oversize the top dressing to avoid causing the wheat to be late.
Author: Li Yan Road
Source: China Agriculture News Network
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