安定区地膜马铃薯不同覆盖方式集雨保墒增产试验

摘要

Anding area is one of the biggest potato producers in China. This research aimed to study various plastic film mulching methods for their effects on rain water harvest and soil moisture conservation and choose the best one to be used in potato production in Anding. Potato biological traits and yield were compared under various mulching methods and the method of complete coverage of plastic film on double rows and planting potato on the sides of the big row was found to have good effects on water conservation and yield increase. The tuber number per plant, tuber weight per plant and large tuber sized percentage were increased by 1.5, 0.3 kg, and 62.5%, respectively, for potatoes under the cultivation method of complete coverage of plastic film on double rows and planting potato on the sides of the big row as compared with the control, in which no plastic film mulching was employed in potato production. Amid all plastic film mulching methods, the method of complete coverage of plastic film on double rows and planting potato on the sides of the big row gave the highest yield, 11 725 kg / ha, increasing by 2 125 kg （22.14%） compared with control.%安定区是全国最大的马铃薯生产县区之一，通过对地膜马铃薯不同覆盖方式集雨节水保墒增产的试验研究，选择适宜安定区马铃薯栽培的地膜覆盖方式，研究了地膜不同覆盖方式对马铃薯生物性状和产量的影响，以双垄全膜覆盖侧播处理增产保水保墒效果为最好。与对照（CK）相比，其株粒数、株粒重、大薯率分别增加1．5个、0.3kg、62．5％；各处理产量以双垄全膜覆盖侧播的产量为最高，11725kg／hm2，比对照增产2125kg，增产率为22．14％。