地膜玉米高产优质栽培综合农艺措施数学模型的研究

STUDIES ON A MATHEMATICAL MODEL OF SYNTHETICAL PRACTICE OF AGRICULTURE FOR HIGH YIELD AND FINE QUALTTY CULTIVATION OF CORN COVERED BY PLASTIC SHEET

本文以密度、农家肥、氮肥和磷肥为试验因子，运用四因素五水平二次回归通用旋转组合设计试验所得的田间参数，建立了地膜玉米中单2号籽粒产量、蛋白质产量、淀粉产量的数学模型，通过计算机模拟，筛选出了籽粒产量≥500kg／亩，蛋白质产量≥50kg／亩，淀粉产量≥300kg／亩的栽培措施优化方案为：密度5181—5909株／亩，农家肥施用量3444—4420kg／亩，施氮量7．18—10．65kg／亩，施磷量9．64—12．01kg／亩。并优选出产量在450—600kg／亩之间间距为50kg的三组产量水平的栽培措施组合方案，以广泛适应各种栽培水平。

In this paper, the experimental factors included density of plants, farm manure, nitrogenous fertilizer and phosphate fertilizer, applying the test datas in square current rotation design, conducted the mathematical model of production of seed, protein and starch. And by the similative test of computer defining the synthetical practice of agrculttire of the production of seed≥500kg/mu, the production of protein≥50kg/mu and the production of starch≥300kg/mu in corn covered by plastic sheet. They are, the density of plants: 5181 - 5909 plants/mu, the farm manure: 3444 - 4420kg/mu, the nitrogenous fertilizer: 7. 18-10. 65kg/mu, the phosphate fertilizer: 9. 64 -12. 01kg/mu.