摘要
为探索两优211的丰产栽培技术模式，采用二次回归通用旋转组合设计，研究两系杂交籼稻两优211产量与主要栽培措施（插秧密度、N、P、K施用量）间的数量关系，并建立了各因素与产量指标的数学模型为Y=8993．76＋101．25X1＋227．92X2＋126．38X3＋85．67X4-134．58X12-351．33X22-46．08X32＋38．67X42＋69．56X1X2＋136．00X1X3-90．19X1X4-86．25X2X3＋83．56X2X4-94．88X3X4。进一步明确了两优211获得8600kg／hm^2以上的丰产栽培配套技术措施的优化组合是：在有机肥为22500kg／hm^2的基础上，插秧密度为（2．7456～2．8377）×10^5穴/hm^2，N施用量165．67—180．15kg／hm^2，P2O5施用量87．368—133．632kg／hm^2，K2O施用量59．475—90．525kg／hm^2。影响两优211产量的主要因子是施氮和密度，其次是施磷和施钾。
For seeking the high-yield cultivating technique of Liangyou 211, qucdratic rotational regression combination design was used to study relation of yield and main cultivating technicque （ the density and N, P2O5, K2O ）, also a mathematical model of the main factors and yield was established： Y = 8993.76 ＋ 101.25 X1 ＋227.92X2 ＋ 126.38X3 ＋85.67 X4 - 134.58 X12 - 351.33 X22 -46.08 X32 ＋ 38.67 X42 ＋ 69.56 X1X2 ＋ 136.00X1X3 - 90.19 X1X4 - 86.25 X2X3 ＋ 83.56 X2X4 - 94.88 X3X4. And then the model made it clear that the suitable cultivating technicque of excellent combination for the high-yield（ more then 8 860 kg/hm^2） were on the base of farm manure 22 500 kg/hm^2 ,density （2.745 6 -2. 837 7） × 10^5/hm^2 ,amount of N： 165.67 - 180.15 kg/hm^2, P20s ： 87. 368 - 133. 632 kg/hm^2, K2O： 59. 475 - 90. 525 kg/hm^2, N and density were the most important for yield among the factors above in liangyou 211 and then P2O5 and K2O.
出处
《种子》
CSCD
北大核心
2006年第1期31-33,共3页
Seed
基金
贵州省科技厅年度攻关项目[黔科合农社字(2002)1129号]
关键词
两优211
高产栽培
数学模型
优化方案
Liangyou 211 High-yield cultivating Mathematical model Optimize the method
