Field experiment on water and nitrogen distribution for winter wheat under border strip fertigation

Based on the field experiments for fertilizing the urea at the regreening stage and anthesis stage of winter wheat, the distribution of soil water and nitrate nitrogen under different border strip fertigation strategies were analyzed. Meanwhile the border strip fertigation performance was evaluated, and the suitable border strip fertigation strategy was proposed. The results showed that the ratios of soil water and nitrate nitrogen effectively stored in root zone and these in 0-80 cm soil layer were not significantly different under different strategies. And soil water spatial distribution was not significantly different under different strategies. Nitrate nitrogen spatial distribution was significantly different The injection of fertilizer during the whole irrigation process with inflow rate of 4 L/(s·m) could produce the preferable distribution uniformity for soil water and nitrate nitrogen which is stored within the effective crop zone in two days after irrigation and could be used in the practice concerned.