转基因抗虫杂交棉高产高效栽培模型的研究  

High-yield and High-efficiency Cultivation Model of Pest-resistant Transgenic Hybrid Cotton(PTHC)

作　　者：谭伟平[1] 吕艳梅[2] 陈金湘[1] 

机构地区：[1]湖南农业大学棉花研究所,湖南长沙410128 [2]湖南省农业科学院水稻研究所,湖南长沙410125

出　　处：《江西棉花》2005年第3期13-20,共8页Jiangxi Cottons

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$35027.92元。④以皮棉产量的数学模型为主,参考其它相应模型,产生了棉花高产、高效、优化栽培方案。To counter some problems in the growing of PTHC in China now, high-yield and high-efficiency cultivation model of PTHC was studied in the experimental station of Cotton Research Institute in Hunan Agricultural University in 2004.The results show: Density, amount of N applied, amount of K applied have the great influence on yield of ginned cotton, in which, the influence of density is the greatest, and that of amount of K applied is the smallest. Based the analytical results, the regression equation of the ginned -cotton total yield was formed as follows: y=1204.10+150.37x_1+114.31x_2+106.15x_3+170.45x_1x_2+64.20x_1x_3+62.47x_2x_3-61.91x_12-51.31x_22-23.83x_32。After optimization of computer on model the highest yield (2278.88kg/ hm2) will be obtained in the condition of 33720plants/ hm2, 253.92kg/ hm2 pure N and 286.03kg/ hm2K2O. In the same time, it can be obtained 36462.08$ total output value and 35027.92$ net output value.

关 键 词：棉花 氮肥 钾肥 皮棉产量 回归模型 

分 类 号：S562.048[农业科学—作物学]