The lower reaches of the Yangtze River is the main area for the growth of highland sandy wheat. The soil develops on the impact mother material of the Yangtze River, and is mainly planted with Yangmai series of wheat. The yield level is 4000-5000kg/hm2. In order to improve the wheat yield and fertilizer use efficiency in the wheat-crop area of ​​high sandy soil, the wheat growth and development rules, nitrogen fertilizer application, and compound fertilizer application during jointing stage in the high sandy soil wheat region were studied to summarize the formation of high-yielding cultivation techniques for high-yield wheat in this area. Provide scientific basis for increasing wheat yield. The wheat test system can test the seeds of high sandy wheat and provide a basis for cultivation.
Six nitrogen application levels were designed and tested. Nitrogen (N) levels for each treatment were 0, 180, 240, 270, 300, and 330 kg/hm2. 60% of the total nitrogen fertilizer was used as the base fertilizer, and 20% was used as the strong and balanced fertilizer. 20% for jointing and booting. Repeat 3 times, randomized block arrangement, plot area of ​​18m2, less tillage drill, basic seedlings 135/m2. The whole growth period was based on the application of superphosphate 600 kg/hm2 and potassium chloride 300 kg/hm2. Other field management is the same as in general Daejeon, observing the growth and development of wheat and measuring actual yield. Wheat test system can accurately determine the seeds.
In high sand soil, wheat tillers increased with the increase of nitrogen fertilizer application rate. The highest nitrogen fertilizer application level was 213.2 kg/hm2 and the yield was 5782.5 kg/hm2. In high wheat-grass wheat area, the main stem and the main stem 1 leaf, 2 leaf and 3 leaf are the main tillers, and the seedlings should be planted early to promote the occurrence of low tillers and the formation of strong seedlings to overwinter, which is the ear and spike. Build the foundation. The test analysis of the wheat test system found that the jointing and panicle-fertilizer application of NPK three-element fertilizer is better, and the amount should be determined according to the previous fertilization level and long growth phase of the wheat field.
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