灌溉方式对甘薯生长的影响

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Effectsof irrigation methodson the growth of sweet potato

HAN Judong1 LIU Zhongling' LI Xiaoyan QIN Jiafan1 CHU Yingying WANG Shuting' SUN Xiaojuan1WANG Zili1SHEN Cuijun2 （1Luoyang Academy of Agricultural and Forestry Sciences，Luoyang 4710oo， China; 2Yuzhou Municipal Bureau of Agriculture and Rural Afairs， Yuzhou 461670， China）

AbstractTo investigatetheeffectsofdiffrentirigation methodsonthegrowthofsweetpotato，afield experiment wasconductedusing thevarietyLuoshu17as test material.Three irrigationtreatments weresetup：ridgeiigation without mulch（PO），drip irrigation without mulch（P1），anddripirrigation with mulch（P2）.Agronomic traitssuchas the longestvine length，andfresh stems and leaf weight，aswellas yield per plant and total yield，were measured.The results showedthat，interms ofagronomic traits，at12Odaysafter planting，theP2 treatmenthadlowervalues forthe longest vine length，fresh leaf weight，rootdrymaterrate，and numberof tubers perplantcomparedtotheP1treatment， whileithadhigherT/Rratioandnumberofbasalbranches.ThePOtreatment exhibitedlower values thanP1inthefresh leaf weight，T/R ratio，number of basal branches，and number of tubers per plant.Regarding yield，at12O days after planting，both theyieldper plantandtotalharvestyieldof theP2 treatment were lowerthan thoseofP1.The PO treatmentshowedahigheryield per plant butalower total yieldcomparedtoP1.Overallunder theconditionsof this experiment，the mulching treatment hada certain inhibitory effect on thegrowth andyield formation ofsweet potato. Compared with ridge irrigation，drip irrigation was more conducive to the growth of sweet potato.

Keywords sweet potato; irrigation methods; agronomic traits; yield

甘薯富含蛋白质、膳食纤维、多酚类物质、维生素、矿质元素等多种对人体有益的营养成分，是重要的营养和保健食品之一l。（剩余5214字）