论文部分内容阅读
为给小麦田间管理提供科学依据,以2000~2002年田间试验为基础,结合相关文献资料,借鉴R/WCSODS思路,建立了不同产量水平小麦最适总茎数动态模拟模型,利用济南与南京地区常年气象资料及相应品种参数等进行了检验。结果表明,在7 500 kg.ha-1产量时济麦19号和济麦20号在济南的最适总茎数动态模拟值与实测值的相关系数为0.9649~0.9690,差值标准误为154.2万~155.2万.ha-1,平均绝对误差为14.25万~127.5万.ha-1;在6 000 kg.ha-1产量时扬麦5号在南京的最适总茎数动态模拟值与实测值相关系数为0.9987,差值标准误为81.56万.ha-1,平均绝对误差为1.38万.ha-1。模拟值与实测值的相关系数均达显著或极显著水平。
In order to provide a scientific basis for wheat field management, based on field experiments from 2000 to 2002, combined with the relevant literature, drawing on R / WCSODS train of thought, established the dynamic simulation model of the optimum total stems of wheat at different yield levels, using Jinan and Nanjing area Perennial meteorological data and the corresponding species parameters were tested. The results showed that the correlation coefficient between the dynamic simulation value and the measured value of optimal total stem number of Jimai 19 and Jimai 20 at the yield of 7 500 kg · ha-1 was 0.9649 ~ 0.9690 and the standard error of difference was 154.2 Ha-1, with an average absolute error of 142,500 to 1,275,000 ha-1; Dynamic simulations and measurements of the optimum total stem number of Yangmai 5 in Nanjing at 6 000 kg · ha-1 production The value of the correlation coefficient of 0.9987, the standard error of 815,600 .ha-1, the average absolute error of 13,800. Ha-1. The correlation coefficient between simulated value and measured value reached significant or extremely significant level.