The field management of high-quality special wheat is divided into three phases: pre-winter management, spring management and post-management. Pre-winter management The goal of pre-winter management is to cultivate strong seedlings, promote root growth, coordinate growth, and ensure that the seedlings safely pass winter. Strong seedlings standards: First, seedlings 6 leaves of the main stem; Second, more tillers (4-5), the total number of heads per acre of 60-70 million; Third, strong root system, secondary roots per plant in more than 10; Fourth, the leaf color is green, but the concentration is also yellow. The specific measures for field management are: Seedling replanting. Check the seedlings as soon as possible after the emergence of the seedlings, severely lack of seedlings off the ridge section, timely rejuvenation or large seedling transplanting to ensure the number of basic seedlings. Classification management. After the three-leaf stage, wheat turns from heterodyne to autotrophic, accompanied by the growth of tiller buds, which is an important period for promoting root growth. At this point, we must do a good job of management to ensure that we promote root growth. We must give priority to weak seedlings. After entering the period of childbirth, seize the favorable opportunity to apply fertilizer after top-dressing, timely cultivating loose soil, and promoting weak and strong. Strong seedlings should be supplemented according to actual conditions. The poor fertility foundation can be quickly applied fertilizer, sowing as early as possible to early fertilize water, anti-strong strong turn, at the end of fat enough, good, appropriate sowing can not top-dressing. If the soil is dry after emergence, it is possible to pour packing water once. Wang Miao should be controlled according to actual conditions. For the formation of fertility foot, good, early sowing of the formation of the reasons for the long field, can be used 15% mu paclobuteazole wet powder 35-40 grams of water spray 50 kg, can also be used in deep cultivator or suppression. However, if the group caused by excessive broadcast volume is too large, only picking or chemical control may be used. In the spring, the temperature in spring has risen. Wheat has entered a period of prosperous growth. In particular, high-quality special wheat has risen early and returns quickly. It should be managed as soon as possible. The goal of spring management is to make wheat grow steadily and form strong stalks. The characteristic of steady growth is that the group is very large (about 800,000 per acre), the leaves are long and not covered, the bottom section grows slowly, and the seedlings are clean and tidy. Return to the green period. High-quality special wheat in the returning green period is mainly to promote the weak, control prosperous, strong, and prevent Rhizoctonia, generally do not apply fertilizer to water, in order to inhibit the spring bristles breeding, accelerate polarization, and achieve robust growth. After entering the green period, 20% triadimefon should be used to control sheath blight as early as possible, combined with cultivating and weeding. Weak seedlings should be watered early to increase the rate of spikes; 15% paclobutrazol can be used for 35-40 grams of water spray 50 kg to prevent lodging; strong seedlings must first control and promote, so that it grows steadily. Jointing period. The high-quality dedicated wheat is mainly to promote the growth of stems and leaves during the jointing stage, so that the root system is developed, the number of spikes is stabilized, and the number of grains is increased. Generally in the first section fixed length, the third section of the stretch when the Mu chase after 5 kg of urea, and control wheat spiders. Booting phase. Entering the booting stage, it is mainly to protect the root and protect the leaves, reduce the degradation of small flowers, increase the seed-setting rate, and ensure the supply of water. In general early March and early April should be timely pouring good booting water. If the jointing water is poured late, the soil moisture content is high and the booting water can be postponed till the heading time. The main objectives of the latter-stage management are to raise roots and protect the leaves, promote the synthesis and accumulation of organic matter, strengthen the control of pests and diseases, prevent premature decay and blue and dryness, improve the quality of wheat, and increase grain weight. Heading period. Focus on the control of powdery mildew, rust, scab, locusts. When controlling aphids at the end of April, applying 70% mancozeb manganese 100-150 grams per acre can control wheat black embryo disease. Pour water early in time. If the relative soil moisture content is less than 60%, it is necessary to timely pour slurry water 4-10 days after flowering. When watering, pay attention to the weather. Be sure to pour water without wind, pour in small winds, and do not use strong winds to prevent the lodging of wheat. In order to ensure the quality of high-quality wheat, it is generally prohibited to pour yellow wheat water if the weather is not particularly dry. Do a good job outside the top dressing. After 5-7 days of flowering, 1 kg of urea per mu and 0.15-0.2 kg of potassium dihydrogen phosphate and 50 kg of water are sprayed on the foliage to increase grain weight and quality, and prevent premature decay and dry hot wind. Timely harvest. Wheat has the highest yield at 20%-22% moisture content at the end of wax, and should be timely harvested to ensure high yield.
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