黔油18号高产综合农艺措施数学模型研究

【目的】为明确影响高原生态区黔油18号油菜产量的关键因子及实现高产高效优化栽培的综合农艺措施。【方法】运用四因素二次回归最优组合设计试验方法，在海拔950~1200m的高原生态区对优良杂交油菜新品种黔油18号的主要栽培措施施氮量、施磷量、施钾量与油菜产量的量化关系进行系统研究，通过建立数学模型的优化与解析，【结果】结果表明，在4因素中，对黔油18号的影响为氮肥>密度>磷肥>钾肥；【结论】要获得≥2493.46kg/hm2的产量，其最佳栽培措施组合是：保持密度13.60~14.50万株/hm2，氮肥291.35~330.00kg/hm2，磷肥92.28~102.2746kg/hm2，钾肥119.20~129.20kg/hm2。

The Study on Mathematical Model and Comprehension Cultural Measure For High-Yield of Brassica Napus Qian You No.18

【OBJECTIVE】The study on the interrelationship among the 4 factors of cultivating measurements (base density, N-fertilizer, P-fertilizer, K- fertilizer) and output of Brassica napus Qian You No.18 with choiceness 【METHOD】by applying the design of quadratic curvilinear regression combination in high altitude field(altitude950~1200m).The result showed that the yield mathematical model established by means of adjusting optimization together with analysis, defining the key divisors and synthetical agronomy measurements that Brassica napus Qian You No.18 with choiceness to growing that high production high efficiency optimizes, good means from a complete system in the interest of the improved variety in high altitude field. 【RESULTS】The results showed that the effect on yield is N-fertilizer>density> P-fertilizer>K-fertilizer. 【CONCLUSION】This model could make sure that the yield reach ≥2493.46kg/hm2,while the optimum comprehensive practices were used and the following indices of the primary density 136000~145000 plants /hm2, N-fertilizer 291.35~330.00 kg/hm2, P-fertilizer 92.28~102.27hm2, K-fertilizer 119.20~129.20kg/hm2.