摘要
探讨了蔗地土壤养分状况与甘蔗农艺性状之间的相关关系,在此基础上进行动态分析与建立综合预测模型。利用种植新台糖22号宿根蔗的土壤养分与农艺性状实测值,对养分间及养分与农艺性状间的相关性进行了分析;并运用Richards函数,选用土壤全氮变化量(N)、全磷变化量(P)、全钾变化量(K)以及甘蔗生长天数(D)为自变量,以甘蔗株高为因变量(H)建立模型。结果表明:在中等养分水平范围内,土壤有机质变化量对甘蔗茎长、茎粗以及节长的提高具有极其显著的影响;土壤全氮变化量影响着甘蔗节的生长;土壤全磷变化量对甘蔗茎长和茎粗的提高有显著影响;其余单个养分因子对甘蔗的农艺性状关系不显著。所得模型为:H=486.0352[1-e^(-0.00625K-0.00098P-0.00678N-0.007138D)]^(9.8642)
To investigate the relationship between sugarcane ground soil nutrients and the sugarcane agronomic characters, comprehensive prediction model was established by dynamic analysis. The perennial root ROC22 was selected as the research object, correlation analysis was made by using the measured values of soil nutrients and agronomic traits. Choosing total nitrogen variation（N）, total P_2O_5variation（P）, total K_2O variation（K） and growth days of sugarcane（D） as the independent variable and sugarcane plant height（H） as the dependent variable, a comprehensive prediction model structure was determined by taking Richards equation. Result showed that in the range of the medium nutrient levels, organic matter variation has extremely significant effect on stem length, stem diameter and section long of sugarcane; total nitrogen variation has significant effect on section long of sugarcane;total P_2O_5 variation has significant effect on stem length and stem diameter of sugarcane; the others were no significant correlation. The model was determined
出处
《中国糖料》
2016年第3期18-20,23,共4页
Sugar Crops of China
基金
国家公益性行业(气象)科研专项重点项目"蔗糖产量预测及气象灾害监测评估技术研究"(GYHY201406030)
关键词
甘蔗
土壤养分
农艺性状
综合预测模型
sugarcane
soil nutrients
agronomic characters
comprehensive prediction model
