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应用2次正交旋转设计,筛选单一作物高产农艺措施组合的试验研究已很普遍,但同时筛选上下两茬作物高产农艺措施组合的试验设计与分析尚未见报道。本试验以全年粮食综合高产为目标,对冬小麦套作玉米的上下两茬作物进行了统筹设计和分析,以探索全年两茬作物高产农艺措施组合。 1 试验设计试验选用套作带距、全年底施氮肥量、全年追施氮肥量、全年底施磷肥量及种植密度5种措施为决策变量。以全年亩产量为目标,采用五元2次正交旋转组合设计方法(1/2实
The application of quadratic orthogonal design to the screening of high-yield agronomic combinations of single cropping is very common. However, the experimental design and analysis of high-yield agronomic combinations that screened both upper and lower cropping plants have not been reported yet. In this experiment, with the goal of comprehensive high yield of grain throughout the year, the upper and lower stubble crops of winter wheat were planted and analyzed in order to explore the combination of high yield agronomic measures of two stubble crops. 1 Test design The experiment used five measures of intercropping with belt distance, nitrogen fertilizer amount at the end of the year, topdressing nitrogen fertilizer amount at the end of the year, and phosphate fertilizer amount and planting density at the end of the year as decision variables. To the annual mu yield as the goal, using five yuan 2 orthogonal rotation combination design method (1/2 real