摘要
云南冬马铃薯生育期为旱季,作物需水量难以得到充分保障,通过灌溉可以补充作物需水,但是灌水节点和灌水量对作物生长发育的影响尚不明确。试验通过膜下滴灌在齐苗期、开花期、淀粉积累期进行不同灌水处理,寻找最佳灌水时段和最优灌水量。结果表明:灌水时段选择齐苗期和开花期2次灌水,单次灌水量为72 m^(3)/hm^(2)时,冬马铃薯产量最高(58790 kg/hm^(2)),商薯率最优(95.6%),经济效益最好(84059.71元/hm^(2))。通过试验证明,云南冬马铃薯灌水关键期为齐苗期和开花期,单次灌水量72 m^(3)/hm^(2)为冬马铃薯种植关键水的最佳灌水量。
The growth period of winter potato in Yunnan is in dry season,and the crop water demand is difficult to be fully guaranteed.Crop water demand can be supplemented by irrigation,but the impact of irrigation time and irrigation volume on crop growth and development is not clear.By using drip irrigation under film,different irrigation treatments were carried out at full seedling stage,flowering stage and starch accumulation stage of winter potato to find the optimum irrigation time and volume.The results showed that when the irrigation was carried out twice at full seedling stage and flowering stage and the irrigation amount was 72 m^(3)/hm^(2) each time,the winter potato yield was the highest(58790 kg/hm^(2)),the commercial potato rate was the best(95.6%),and the economic benefit was the optimal(84059.71 kg/hm^(2)).The experiment verified that the critical irrigation period of winter potato in Yunnan is full seedling stage and flowering stage,and the irrigation amount of 72 m^(3)/hm^(2) each time is the best irrigation amount of key water for winter potato cultivation.
作者
尹亚敏
孔维博
范春梅
彭尔瑞
YIN Yamin;KONG Weibo;FAN Chunmei;PENG Errui(College of Water Conservancy,Yunnan Agricultural University,Kunming 650201,Yunnan,China;China Energy Construction Group Yunnan Electric Power Design Institute Co.,Ltd.,Kunming 650201,Yunnan,China)
出处
《农学学报》
2023年第6期11-16,共6页
Journal of Agriculture
基金
云南省教育厅科学研究基金项目“节水灌溉对马铃薯及田间土壤水分的影响研究”(2014Y192)。
关键词
冬马铃薯
膜下滴灌
关键灌水量
灌水关键期
winter potato
drip irrigation under film
critical irrigation amount
critical irrigation period
