Author(s): HE Ling, HE Wen-shou, REN Ran, WANG Tao, ZHANG Li-xin, College of Agriculture, Ningxia University, Burea of Meteorology
Pages: 16-20
Year: 2015 Issue:  12
Journal: Water Saving Irrigation
Keyword:  oilseed sunflower; water and fertilizer coupling; arid region; yield;
Abstract: Using part of the"3414"implement scheme of optimum mixed design,adding a farmyard manure treatment as compared treatment,and combining with different irrigation amount,the water-fertilizer coupling field experiment for oilseed sunflower is conducted under the condition of drip irrigation in the drought area of middle Ningxia to reveal the effects of oilseed sunflower NPK fertilizer and farmyard manure and their water-fertilizer coupling under the conditions of different irrigation quota.The experiment results show that under the condition of same irrigation amount,both NPK fertilizer and farmyard manure can increase the production,NPK is the best treatment,which can increase the production by 31%~38%than the no fertilizer treatment.Under the condition of same fertilization,adding irrigation can increase production,and the growing rate of the treatment with 600m3/hm2 irrigation quota is always more than that of the treatment with 1 200m3/hm2 irrigation quota.The optimum combination of water and fertilizers suitable for local agriculture is 600 m3/hm2 irrigation amount,210kg/hm2 N,90kg/hm2 P2O5,60kg/hm2 K2 O,and the yield can reach 4 074kg/hm2,which is increased by 63.8%and 11.5%than the yield of the treatment of no fertilizer and water and the treatment of farmyard manure with 600m3/hm2 irrigation quantity,respectively.