Affiliation:
1. Agricultural College, Shihezi University, Shihezi 832000, China
2. Research Center (CentraAsia) for Efficient Utilization of Phosphorus Resources, Guiyang 550000, China
3. Aksu Jiabang Fertiliser Co., Aksu 843000, China
4. Xinjiang Academy of Agricultural Reclamation Sciences, Shihezi 832000, China
Abstract
Nitrogen (N), an important element for crop growth, has a great impact on dry matter weight and yield. Currently, improving N fertilizer use rate is an urgent problem to be solved in agricultural production in the world. In this field experiment, a self-developed water-soluble polymer material (PPM) with water retention and slow-release characteristics was combined with different doses of N fertilizer (N300 (100% N), PN300 (PPM + 100% N), PN240 (PPM + 80% N), PN180 (PPM + 60% N), CK (no N and PPM)) to analyze the impacts on N uptake and use efficiency of wheat plants. The results showed that the combined application of PPM and N fertilizer significantly improved yield, plant height, biomass, and N uptake and use efficiency of drip irrigated wheat, and the PN240 group had the highest N use rate. In addition, the PN300 group had the highest yield. N use efficiency in the PN240 group was 40.23% higher than that in the N300 group. Therefore, the combined application of PPM and N fertilizer, especially PN240, can reduce the N fertilizer application rate by increasing N use efficiency. This study provides technical reference for improving the N use efficiency of drip-irrigated wheat in arid areas.
Funder
Special Fund for Key Science & Technology Program in Xinjiang Province of China
Program of Shihezi University
Guiding Science and Technology Plan Project of Xinjiang production and Construction Corps