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应用通用二次旋转回归设计对旱作老芒麦进行氮、磷施肥试验。试验结果表明 ,氮肥和磷肥都可以显著提高种子产量 ,早春一次性施用纯N 80kg/hm2 和纯P2 O550kg/hm2 可得到10 2 7kg/hm2 的种子产量 ,较不施肥提高 12 9%。同时对种子产量构成因子的分析表明 ,不同的施肥水平对各产量构成因子都产生作用 ,每小穗种子数对种子产量贡献率最大
Application of common quadratic rotation regression design on the dry cultivation of Siberian wheat nitrogen and phosphorus fertilization experiment. The results showed that both nitrogen and phosphate fertilizers could significantly increase the seed yield. In the early spring, the seed yield of 10 27 kg / hm2 could be obtained by single application of pure N 80kg / hm2 and pure P2 O550kg / hm2, 12 9% higher than that without fertilization. At the same time, the analysis of seed yield components showed that different fertilization levels had an effect on the yield components, and the contribution of each spikelet seed to seed yield was the largest