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我国北方夏玉米区试,每年试验点10—13个,涉及7省市,为了减少试验点,节约开支,而又不影响试验的准确性,本文用Hamblin等提出的方法对我国北方夏玉米区试在11年间的19个地点的产量结果进行分析,按 Hamblin及 Allen等的观点,在中产和高产地点,具有相关系数r>0.95、回归系数b>1及20％IS>80％的单个地点或组合地点(即几个地点的平均值)是最佳的试验地点。本文选出河北省粮油作物所、河南粮食所、山西小麦所、山东潍坊所、山东烟台农科所、陕西咸阳农科所、河南黄泛农科所、江苏淮阴农科所、安徽宿县农科所等为中国北方夏玉米区试的最佳组合地点。
In the trial of summer maize in the north of China, there are 10-13 pilot sites each year involving 7 provinces and cities. In order to reduce test points and save expenses without affecting the accuracy of the experiment, this paper uses the method proposed by Hamblin et al. Yield results were analyzed at 19 sites over a 11-year period. According to Hamblin and Allen et al., At single and mid-production locations, there was a single site with a correlation coefficient of r> 0.95, regression coefficients b> 1, and 20% IS> 80% Or a combination of locations (ie, the average of several locations) is the best place to test. This article selects Hebei Cereals and Oils Crops Institute, Henan Grain Institute, Shanxi Wheat Institute, Shandong Weifang Institute, Shandong Yantai Agricultural Research Institute, Shaanxi Xianyang Agricultural Research Institute, Henan Huang Pan Agricultural Research Institute, Jiangsu Huaiyin Agricultural Research Institute, Anhui Suxiannong Branch and so on for the northern China summer maize district best combination of locations.