【摘要】 针对转基因抗虫杂交棉的生长发育特性和栽培方面存在的一些问题,于2004年以抗虫杂交棉H37为材料,在湖南农业大学棉花研究所试验基地进行了3因子旋转回归试验设计。试验结果表明:①密度、施氮量和施钾量3个试验因子对皮棉产量均存在显著的影响,影响效应为密度因子最大,施氮量次之,施钾量最小。②据试验结果,建立皮棉总产量回归方程:y=1204.10+150.37x1+114.31x2+106.15x3+170.45x1x2+64.20x1x3+62.47x2x3-61.91x12-51.31x22-23.83x32。③经过计算机进行模拟选优,得出最佳组合方案为密度为33720株/hm2,施氮量为253.92kg/hm2,施钾量为286.03kg/hm2,此时可获得最高皮棉产量2278.88kg/hm2,总产值为$36462.08元,净产值为$35027.92元。④以皮棉产量的数学模型为主,参考其它相应模型,产生了棉花高产、高效、优化栽培方案。更多还原

【Abstract】 To counter some problems in the growing of PTHC in China now, high-yield and high-efficiency cultivation model of PTHC was studied in the experimental station of Cotton Research Institute in Hunan Agricultural University in 2004.The results show: Density, amount of N applied, amount of K applied have the great influence on yield of ginned cotton, in which, the influence of density is the greatest, and that of amount of K applied is the smallest. Based the analytical results, the regression equation of the ginned -cotton total yield was formed as follows: y=1204.10+150.37x₁+114.31x₂+106.15x₃+170.45x₁x₂+64.20x₁x₃+62.47x₂x₃-61.91x₁2-51.31x₂2-23.83x₃2。After optimization of computer on model the highest yield （2278.88kg/ hm2） will be obtained in the condition of 33720plants/ hm2, 253.92kg/ hm2 pure N and 286.03kg/ hm2K2O. In the same time, it can be obtained 36462.08$ total output value and 35027.92$ net output value.更多还原