How to manage high yields of wheat

The first reason is that because of the suitable seedlings, scientific fertilizer and water management. For wheat fields with normal growth and high fertility levels, combine watering and replanting jointing fertilizers at the jointing stage; for medium-fertility wheat crops, combine fast-acting fertilizers with watering during the period of standing up; and three types of wheat seedlings with poor dry growth, In the early spring, based on the scratching, the top dressing should be applied twice in the returning green stage and the jointing stage to promote the spring oysters to form the panicles, increase the percentage of spikes, promote the development of the floret, and increase the number of grains per spike; no sowing or fertilization should be applied when sowing. Less seedlings of late seedlings should be topdressed with fertilizers just after the soil is thawed, but should not be poured back into Qingshui, so as not to cause a drop in ground temperature and poor soil permeability, which will affect the growth of wheat plants. Can be based on the fine plan, in the early stages of wheat to carry out the promotion of fertilizer and water, topdressing about 10 kg of urea per acre is appropriate. Watering should be carried out when the average ground temperature is stable at about 5°C so as to avoid freezing damage caused by watering prematurely.

The second is to carry out cultivator arbitrarily. For all types of wheat fields at all levels, the cultivator must be widely used before and after the returning green period of wheat to remove the compaction, eliminate the weeds, warm the soil, and promote the seedlings to grow quickly. Specifically, the weaker seedlings should be lightly scorched, broken and hardened, and should be prevented from injuring the roots and sprouts. If the wheat fields, which may be prosperous, should be properly squatted, the growth of the above ground parts should be restrained, and the growth of the above ground should be controlled. Strong; for the extensive preparation of land, 坷 多 多 多 多 多 , , , , , , , , , , , , , , , , , , , , , 特别 没有 没有 没有 没有 没有 没有 以及 以及 以及 以及 以及 以及 以及 以及 以及 以及 以及 以及 以及 以及 以及 以及Saline land principle. In addition, the repression should be combined with cultivator, it is best to press the Houyi first, in order to achieve the effect of the virtual reality, raise the temperature, and increase the temperature.

The third is that for the water-free conditions of hilly dryland wheat, the spring management should be based on the preservation of temperature increase. After the wheat field is defrosted in the early spring, the common wheat field can be ditched and topdressed. If there is a defertilization symptom at the jointing stage, the fertilizer should be combined with the appropriate amount of rain in a timely manner; the dry fertilizer with a large amount of seedlings and a high level of soil fertility before the winter should be used. The ground may be suitable for top-dressing during the jointing season. Topdressing can be applied with deep ditching or hoeing to avoid loss of fertilizer. The plots with insufficient phosphorus fertilizer should be applied with nitrogen and phosphorus. The focus of the disease prevention and control of wheat this year is two diseases and two pests, namely sheath blight, rust, and midge, and panicle blast. At present, we must focus on the control of sheath blight. We can use systemic agents such as triadimefon, jinggangmycin and loquat fruit to increase the amount of water and evenly spray. In the case of severe crops of wheat midge last year, the emergence of midge in mid-April will occur. The use of 3% lindane powder or 2-6 kg of methyl isofluscin granules per acre will be used as a poisonous soil. Spread and apply water if there is no rain after application. For wheat stripe rust, it is necessary to actively implement successful experiences of "accurate detection, drug reconnaissance, discovery, and control" to prevent large-scale outbreaks. For the severe field of weeds in wheat fields, we must pay attention to doing a good job of chemical weed control in wheat fields based on cultivators and manual extraction. Weedy grass, wild rapeseed, mirabilis, leeks and other weeds occur in severe plots, and can be used to prevent and control the wheatgrass net. For severe oat plots, 6.9% of hummocks can be used for control. The specific time is appropriate when the temperature is stable at 10 °C ~ 15 °C, and it is necessary to pay attention to grasp the amount of application and application time. When talking about how to defend against frost damage in spring wheat fields, Professor Guo told reporters that according to the large proportion of spring wheat varieties in our province, and the high incidence of “cold spring”, all localities must actively prepare spring wheat anti-freezing plans. According to the weather forecast, wheat fields should be irrigated in time before the onset of the cold current to prevent freezing damage. In the event of frost damage, cultivators should be promptly cultivated, combined with the use of water-saving nitrogen fertilizer, promote the birth of new crops into the ear, and minimize the damage caused by freezing damage.

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