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采用菲波拉奇数列来模拟小麦个体拔节前理想条件下的茎蘖动态 ,并将小麦分蘖能力作为品种遗传参数来修正不同品种的分蘖潜力 ;采用叶面积指数影响因子和群体同化物供应状况来描述群体自身对茎蘖发生的影响 ;采用水分和氮素丰缺因子来模拟水分和氮素条件对群体茎蘖数的影响。拔节后群体茎蘖数的下降受到同化物供应状况和有效热时间的影响 ,并将有效分蘖可靠叶龄期的茎蘖数作为不同品种最小茎蘖数。利用不同田间试验资料对模型的检验结果表明 ,模型对小麦茎蘖动态的预测具有较好的解释性和可靠性 ,预测平均误差小于 10 %。
Using the Fibonacci series to simulate the tillering dynamics of wheat individuals under the ideal conditions before jointing, and using the tillering ability of wheat as the genetic parameter of cultivars, the tillering potential of different cultivars was corrected. The influence factors of leaf area index and assimilation supply To describe the impact of the population itself on stem tillering; use of water and nitrogen abundance factor to simulate the impact of water and nitrogen conditions on the number of stools. The decrease of stem tiller number after jointing was affected by the supply of assimilates and the effective heat time, and the tiller number of effective tillering stage was the minimum tiller number of different varieties. The test results of the model using different field test data show that the model has good explanatory and reliability in predicting the tiller dynamics of wheat and the average prediction error is less than 10%.