简介:摘要:薯不但具备食物功能,而且具备一定的使用价值,所以必须深入研究红薯的栽培方法,利用科学技术的提高,促进红薯生产的增加。本文从四大方面介绍了红薯防灾减灾高产种植的操作要领,以供参考。
简介:ThefeaturesofphysicalgeographyinthetransitionalregionbetweenQinlingMountainsandHuanghuaiPlainpossesstransitionalcharactersevidentlyintwodirections:oneisfromthewesternmountaintotheeasternplainandtheotherisfromsouthernsubtropicalzonetonortherntemperatezone.Torrentialrain,especiallystrongtorrentialrainisfrequentinthetransitionalregion,andtherearemanytorrentialraincenters.Amajorityoftorrentialrainisdistributedamong100-200masl.Thewintertemperatureat100-400maslishigherthanthatinHuanghuaiPlainwhosealtitudeislowerthanthatofthetransitionalregion,andthehighesttemperatureinJanuaryappearsat350-400masl.Thethicknessofwarmslopebeltinthetransitionalregionvariesfrom100mto250masl.Theformationoftorrentialrainandwarmslopebeltistheresultofjointactionofatmosphericcirculationandlocalterrain.Frequenttorrentialrainsandwarmslopebelthadtremendousinfluencesonthesoilproperties,plantdistributionandlocalclimateinthetransitionalregion.