水城马铃薯产量与气象因子关系的研究

Study on the Relationship between Potato Yield and Meteorological Factors in Shuicheng

摘要: 利用水城2005~2024年马铃薯农气观测、产量及逐日的气温、降水、日照时数资料，采用对比、回归分析法对水城马铃薯产量与气象因子关系进行分析，结果显示：水城的马铃薯产量与幼苗期的有效积温、降水、日照均成正相关，相关系数分别为0.9、0.72、0.8；与结薯期的有效积温和降水成正相关，相关系数分别为0.63和0.66，与日照成负相关，相关系数为−0.76。结果表明水城马铃薯产量主要取决于幼苗期和结薯期，幼苗期适时浇灌是实现本地马铃薯增产的有效措施，最有利于马铃薯形成高产的时段是6月份。

Abstract: Using agricultural meteorological observations, potatoes yield datas, and daily temperature, precipitation, and sunshine records in Shuicheng from 2005 to 2024, a comparative and regression analysis was conducted to examine the relationship between potato yield and meteorological factors. The results indicate that potato yield in Shuicheng is positively correlated with effective accumulated temperature, precipitation, and sunshine during the seedling stage, with correlation coefficients of 0.9, 0.72, and 0.8, respectively; it is also positively correlated with effective accumulated temperature and precipitation during the tuber formation stage, with correlation coefficients of 0.63 and 0.66, respectively, and negatively correlated with sunshine, with a correlation coefficient of −0.76. The findings suggest that potato yield in Shuicheng primarily depends on the seedling and tuber formation stages. Timely irrigation during the seedling stage is an effective measure to increase local potato yield, with June being the most favorable period for achieving high potato productivity.