Suzhou City
1. Control and prevent falling and promote individual development. The number of seedlings in the first and second class is significantly higher than last year, and there are some Wang Miao. Although it has laid a foundation for high-yield seedlings, it also increases the risk of lodging. Therefore, it is fast for large groups, especially those that grow tobacco farmers. In the high wheat field, it is necessary to pay attention to the spraying of paclobutrazol, uniconazole or Zhuangfengan in the period of getting up, so as to shorten the internodes, control the plant growth, promote the roots, strengthen the individual development and increase the resistance to lodging.
2. Reasonable topdressing and increase the rate of tillering into ear. The first and second types of nursery rain or combined watering will apply 7-10 kg of urea per acre; for some seedlings that are de-fertilized and yellowed in some fields, the urea will be applied for 5-7 kg, and the wheat seedlings will turn green. Strong; for the three types of seedlings that have been re-applied to the green manure, the jointing fertilizer is appropriately postponed, and 5-7 kg of urea is applied per mu to consolidate the tillers into panicles, and to fight for large grains in the ear; for the wheat fields in the early spring, the ammonium carbonate is applied. Isocratic nitrogen increases the rate of panicle formation in wheat.
3. Timely control of pests and diseases. Wheat sheath blight: prevention and control at the beginning of jointing, using 5% Jinggangmycin water 200ml/mu, 30kg water, sprayed on the base of wheat stems, emphasizing the "smoke" spray to improve the control effect. Weed control: Dispel the daily average temperature of 5 ° C or more to grab the clearing medication to improve the efficacy. Generally use 20% per acre to make it 40~50ml of augmentation oil and add 6.9% Hummer 40~60ml, spray 40kg with water, pay attention to prevention before jointing, spray and spray evenly, spray it when it is rainy or windy Shi.
Lu'an City
1. Control Wang Miao. One of the following methods can be used for chemical control to prevent late lodging. Use 15% paclobutrazol 50g per acre, 50kg water, spray in the body, do not spray without leaking spray; use 20% Zhuangfengan EC 30-40ml per acre, 30-40kg water Spraying in the rising period; 15-20 ml per acre, 50-60 kg water, sprayed at jointing stage.
2. Classification management due to fertilization of seedlings. Wang Miao, a type of seedling wheat field, can use the "nitrogen fertilizer rearward shifting" technology, in the middle and late jointing stage combined with soil moisture, 7.5 kg of urea per mu, and the second type of wheat field to see the seedling fertilization, such as wheat seedlings have yellow deficiency, can be used At present, the soil moisture after the rain is 7.5 kilograms of urea per acre. For the wheat fields with good growth, the topdressing time can be postponed to the beginning or the early stage of the jointing. Generally, the urea is applied for 5 to 7.5 kilograms per mu. The three types of seedlings are the weak wheat fields. It is necessary to apply the returning green fertilizer as early as possible, applying 10 kg of urea per mu, and applying 5 kg of urea per acre at the end of the jointing period.
3. Do chemical weeding. After the temperature rise in spring, before the jointing of the wheat, the herbicide was selected according to the type of weeds in the wheat field for chemical weeding.
4. Do a good job in preventing and controlling the pests and diseases of Wang Miao in advance. During the jointing to the rise period, 80-100 ml of triazodone EC with 20% per acre, sprayed with 40 kg of water to prevent sheath blight, pay attention to the number of aphids in the field, and timely control.
5. Clean up the "three ditch" of the wheat field. Timely clean up the "three ditch" of wheat fields to prevent waterlogged and wet damage in spring wheat fields.
Along the Huai area
1. Early return to green fertilizer. For the late buckwheat seedlings, the fertilizer should be applied early to promote the growth tillering; for the lodging of the frozen seedlings, it is also necessary to restore the growth to promote tillering, and the topdressing is very effective. Dead leaves can be removed if necessary to facilitate wheat growth. Spraying foliar fertilizer is also a good choice in early spring, which can not only promote growth, but also resist cold and cold premature aging.
2. Clear the ditch to prevent stains. In particular, the rice buckwheat area should improve the "three ditch" in the field and deepen the head ditch to ensure smooth drainage, prevent waterlogging and affect production.
3. Chemical weeding. According to the grass and grass, use high-efficiency and safe herbicides such as Hummer, Shima, Superstar, Zhilong, Maixi, etc., and timely control the chemical weeding work to control the occurrence of grass damage.
4. Prevent the cold and cold damage. Increase field management efforts, combined with local wheat seedling growth conditions, appropriate measures to ensure warmth and antifreeze to ensure that wheat tillers are not frozen.
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