Study on regularities of timeliness loss changing with soybean harvesting date
One significant reason of soybean economic loss is timeliness loss,which caused by default-time operation.Taking Hailun county as research objective,timeliness loss regularities changing with soybean harvesting date were analyzed according to experiment data,which were the scientific accordance for reasonably ascertaining harvesting date.Removing boundary effect the same sowing ways and field management methods were adopted in order to control harvesting date as the only variable.Harvesting plots of each day were determined on the basis of randomized block test method.Abnormal testing data were eliminated adopting Romanowski criterion.Regularities were obtained applying IBM SPSS Statistics 23 software,which show timeliness losses were parabolic changing with soybean harvesting time.
soybeanharvesttimeliness loss rateregularityexperiment
NETL
NSTL
万方数据
维普
