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为了明确鲁东地区节水生产灌溉制度和节水晚播条件下的高产适宜用氮量,本试验在大田条件下采用5因素4水平正交优化设计研究了品种、灌水模式、播期、播量、氮肥用量对不同冬小麦产量及产量结构的影响。结果表明:品种、播期、播量3个因素对小麦籽粒产量影响较明显,灌水模式及氮肥用量影响次之。‘烟0428’产量最高,达9324.3 kg/hm~2;其次为‘烟农21’,籽粒产量高达9142.8 kg/hm~2,表明‘烟0428’和‘烟农21’为抗旱节水节肥品种。灌3水处理(拔节水、开花水、灌浆水)和灌1水处理(拨节水)产量较高,差异不显著,说明适合鲁东地区节水生产的最优灌溉制度是灌1水即拔节水。播量与播期有机结合,适应鲁东地区气候变化和节水需要的晚播适期范围为10月6—8日,适宜播量范围为127.5~165 kg/hm~2。
In order to clarify the irrigation system under water-saving production in Ludong area and the nitrogen content suitable for high-yielding under water-saving late-sowing conditions, we studied the varieties, irrigation patterns, sowing date, sowing date under field conditions using orthogonal design of 5 factors and 4 levels Effect of Nitrogen and Chemical Amount on Yield, Yield and Yield Structure of Different Winter Wheat. The results showed that the three factors of variety, sowing date and sowing rate had obvious effects on the grain yield of wheat, followed by the irrigation mode and the amount of nitrogen fertilizer. The highest yield of ’0428’ was 9324.3 kg / hm ~ 2, followed by ’Yannong 21’ and the grain yield was 9142.8 kg / hm ~ 2, indicating that ’0428’ and ’Yannong 21’ were drought-resistant and water- Irrigation 3 irrigation (jointing water, flowering water, grouting water) and filling 1 water treatment (dial water) yield is higher, the difference is not significant, indicating that the optimal irrigation system suitable for water-saving production in Ludong region irrigation 1 water Drawn water. The sowing date and sowing date are organically combined. The appropriate range of late sowing date for adapting to the climate change and water saving needs in Ludong area is October 6-8, and the suitable sowing range is 127.5-165 kg / hm ~ 2.