Zhenjie No.2 is a new maize variety selected and developed by the researcher of Wu Zhenjie, the seed management office of Liaocheng City, Shandong Province. It is a compact, high-yield, lodging-resistant, live-stemmed mature medium-early-mature corn variety that was approved in 2006. Shandong Crop Variety Approval Committee approved. Zhenjie No.2 is a compact medium-early-maturing hybrid that exhibits high-yield, lodging-resistance, and live stalk maturation. During the half-fertility period of Jiaodong 10ld, the average plant height was 230cm, the ear position was 90cm, the ear length was 18cm, the ear row number was 14, and the rows of kernels were counted. 38, grain number 532, Seed production rate of 87.2%, yellow axis, grain yellow-white, half horse teeth, grain weight 376g. High resistance to bacterial wilt, dwarfism, smut, resistant to various spot and rust. Plant type stalks have good toughness, developed root system, and have outstanding lodging resistance. Seedlings grow quickly, grow vigorously, and their leaves are dense green and delicate, and aerial roots and secondary roots are relatively developed. 1 site selection Select the soil thickness greater than 90cm, the cultivation layer of organic matter content of O.80% ~ 1.20% of the land cultivation, summer direct sowing of corn before planting should not be deep ploughing, shallow ploughing, the general ploughing depth of 10 ~ 20cm, ploughing in a timely manner Thoroughly and compactly implement the elimination of light and dark dust, and all the organic fertilizers, phosphorus, potassium, and zinc fertilizers are applied as a basal fertilizer at one time. It is best to concentrate all the phosphorus and potassium fertilizers, and use zinc fertilizer and organic fertilizers in combination to prevent direct contact between zinc fertilizers and phosphate fertilizers. The overall requirements are: 45,000 kg/hm2 of quality organic fertilizer, 1050 to 1350 kg/hm2 of standard nitrogen fertilizer, 525 to 600 kg/hm2 of standard phosphate fertilizer, 300 to 375 kg/hm2 of standard potassium fertilizer, and 15 kg/hm2 of zinc fertilizer. 2 Seed treatment and sowing Seeds should be carefully selected, selected sunny and warm weather drying seeds 2 ~ 3d, can increase the germination rate, early emergence, reduce the incidence of head smut. With 20% seed dressing No. 1 or 25% seed dressing No. 4 seed dressing, the dosage is 5% and 2% of the seed amount respectively, to control underground pests and seedling stage pests and diseases, and to promote early-onset seed. Suitable field holding capacity for corn sowing is ~70%. Interplant corn and summer live corn, which can be combined with wheat field watering and seeding. During the summer, the live corn was rushed to harvest immediately after the wheat harvest. Generally, it was planted in mid-June and the seeding rate was 37.5 kg/hm2. The depth of sowing is 3~5cm, and urea 75kg/hm2 is used as a seed fertilizer at the same time. Pharmaceutical Intermediates
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