土壤和气象条件对宁夏枸杞灰分含量的影响

根据 2 0 0 0～ 2 0 0 1年我国北方 6省区枸杞取样和田间试验资料 ,分析了影响枸杞灰分含量的土壤和气象因子 ,并建立了相应的关系模式。结果表明 ,枸杞灰分含量的变异系数为15 %左右 ,枸杞灰分含量主要由品种因素决定 ,环境因子对灰分含量有重要作用。影响枸杞灰分含量的环境因子主要有果实形成期平均相对湿度、日较差和开花到成熟期降水日数、土壤全钾含量等。果实形成期相对湿度是影响枸杞灰份含量的最主要的因子 ,枸杞灰分含量随这一时期平均相对湿度的增大呈指数型增加。降水日数是影响CMA的关键因子 ,随着枸杞开花到成熟期降水日数的增加 ,CMA呈对数型增加

Effect of soil and meteorologic condition on the content of medlar ashes

Based on the data of medlar samples from 6 Provinces in northern China and data of field experiments from 2000 to 2001,soil and meteorologic condition factors associated to the content of medlar ashes(CMA)were analyzed,and relevant models were established.The results showed that coefficient of variation (Cv) of CMA was about 15%.CMA mainly determined by medlar's variety,while environmental factors also played an important role.Those environmental factors include mean relative air humidity and diurnal range of mean air temperature from fruit developing stage of medlar, precipitation days during flowering to autumn,and total K in soil.According to statistical results,relative air humidity during fruit development was the main factor influncing CMA.CMA increasing exponentially with the increase of relative air humidity.Precipitation days during flowering to Autumn was the key factor for CMA.It increased as logarithm actually with precipitation days.