Bio:
Email: 1532688129@qq.com
王博媛(2003—),女,大学本科,研究方向为资源与环境;1532688129@qq.com
为探究氮肥运筹对新疆伊犁黑土区春小麦生长、产量及氮肥吸收利用的影响,以“核春115”为供试材料,在新疆的黑钙土区和底砾黑土区开展了施氮量分别为0、112、169、225、281 kg/hm2(N0、N50、N75、N100、N125)的田间小区试验,考察了施氮量对春小麦产量及氮肥吸收利用等的影响。结果表明:春小麦叶片的叶绿素相对含量(SPAD值)、干物质积累量、产量和氮肥农学利用率均随施氮量的增加呈先升后降的变化趋势,氮肥偏生产力随施氮量的增加呈递减趋势;在试验条件下,基于回归分析,得出黑钙土区和底砾黑土区的最佳施氮量分别为158.6、98.0 kg/hm2。
To investigate the effects of nitrogen fertilizer management on the growth, yield, and nitrogen uptake and utilization of spring wheat in the black soil region of Yili, Xinjiang, a field plot experiment is conducted using "Hechun 115" as the experiment material in the chernozem and gravelly black soil regions of Xinjiang with nitrogen application rates of 0, 112, 169, 225, and 281 kg/hm2 (N0, N50, N75, N100, N125). The effects of nitrogen application rate on the yield and nitrogen uptake and utilization of spring wheat are examined. The results show that the relative chlorophyll content (SPAD value) of spring wheat leaves, dry matter accumulation, yield, agronomic utilization efficiency of nitrogen fertilizer all increase initially and then decrease with increasing nitrogen application rate, and the partial factor productivity of nitrogen fertilizer decreases with increasing nitrogen application rate. Under the experimental conditions, based on regression analysis, the optimal nitrogen application rates for the chernozem and gravelly black soil regions are determined to be 158.6 kg/hm2 and 98.0 kg/hm2, respectively.
KASEMSAP P, BLOOM A J. Breeding for higher yields of wheat and rice through modifying nitrogen metabolism[J]. Plants, 2023, 12(1): 85.
CHEN Y, TANG X, YANG S M, et al. Contributions of different N sources to crop N nutrition in a Chinese rice field[J]. Pedosphere, 2010, 20(2): 198-208. doi:10.1016/S1002-0160(10)60007-0
DING W C, XU X P, HE P, et al. Estimating regional N application rates for rice in China based on target yield, indigenous N supply, and N loss[J]. Environmental Pollution, 2020, 263(Part B): 114408.
YU X, KEITEL C, ZHANG Y, et al. Global meta-analysis of nitrogen fertilizer use efficiency in rice, wheat and maize[J]. Agriculture, Ecosystems and Environment, 2022, 338: 108089. doi:10.1016/j.agee.2022.108089
WALSH O S, SHAFIAN S, CHRISTIAENS R J. Nitrogen fertilizer management in dryland wheat cropping systems[J]. Plants, 2018, 7(1): 9. doi:10.3390/plants7010009