Fertilizer parameter experiment of winter wheat was carried out in six towns of Zhaoyuan city. Results indicated that yield increase effect of phosphate fertilizer was tightly related to Olsen-P content. When Olsen-P content reached 20 mg/kg, phosphorus belonged to high fertility level. Wheat yield increased with the decrease of fast -acting potassium. When the content of fast -acting potassium was less than 80 mg/kg, economic benefit of potassium fertilization was the highest. In high, middle and low yield field, wheat yield of district-wide fertilizer field was the highest. And its N, P and K fertilizer utilization efficiency was higher than that in district -lack fertilizer field. Therefore, N, P and K fertilizer should be applied together in order to improve agricultural utilization efficiency of the fertilizer.
Brown soil zoneWinter wheatYieldFertilizer utilization efficiency
国家科技期刊平台
NSTL
维普
万方数据
