湘北地区杂交双季晚稻产量性状的相关分析与结构指标的数学模拟

The Mathematical Simulation of the Correlative Analysis and Structural Index of Output Trait of Hybrid Double-cropping Rice

通过对杂交双季晚稻产量构成因素的偏相关和通径分析,明确了夺取杂交双季晚稻高产应以适增亩丛数、酌控丛穗数、确保实粒数、兼顾千粒重为主攻方向。从产量结构的模拟模型,探明了各产量因素相互影响、此长彼消的互变规律,进而导出不同产量的结构指标,找出了苗、穗、粒、重动态运行的最佳轨道。

Based on the results obtained by means of the partial correlation and channel of the factors relating to the output of the hybrid double -cropping rice,the author suggested that the high yield of hybrid double-cropping rice should be gained by increasing clump number per mu, controlling ear number per clump so as to get corresponding grain number and kilograin weight and, by way of the simulated nathematical model of output structure,the mutual influences of the output factors and their alternative increase and decrease were verified ;therefore, the structural index of different output and the best track for the dynamic development of seedling,ear and grain weight have been obtained .