Abstract:

Effects of drip irrigation under mulching on growth, yield , quality and water use efficiency of ‘Kexin1’ were studied, taking no irrigation under mulching (CK) as comparison. The experimental results showed that the effect of drip irrigation under mulching on the growth of the aerial parts, tuber yield and quality (contents of starch and reducing sugar) and water use efficiency on potato was significant. The tuber yield of drip irrigation under mulching and water use efficiency were 55596.00 kg/hm2 and 170.45 kg/(hm2?mm), being 2.86 and 1.02 times of CK , respectively. The contents of starch increased by 0.94% and the content of reducing sugar decreased by 0.02%, respectively, under drip irrigation under mulching.