Effects of phosphorus fertigation on distribution of Olsen-P in soil and yield of maize
WANG Zhen, LI Jiusheng*, LI Yanfeng, HAO Fengzhen
State Key Laboratory of Simulation and Regulation of Water Cycle in River Basin, China Institute of Water Resources and Hydropower Research, Beijing 100048, China
Abstract：Pot and field experiments of maize(Zea mays L.)under drip irrigation were conducted to evaluate the effects of phosphorus fertigation and lateral depths on the distribution of Olsen-P in soil and growth and yield of maize in 2016 and 2017, respectively. Three lateral depths at 0, 15, and 30 cm beneath the soil surface and two phosphate fertilizer application methods(single basal application and split fertigations)were tested in both years. Another treatment with no phosphate fertilizer applied was considered in the field experiments as control. The phosphorus fertigation could improve the efficiency of phosphate fertilizer while the strong phosphorus adsorption was also observed. The phospho-rus fertigation significantly improved the growth and yield of maize and the phosphate fertilizer application methods imposed significant effects on the yield of maize at a significance level of α=0.1 for both the pot and field experiments. The treatments with lateral depth at 15 cm generally obtained higher yields than the treatments with lateral depths at 0 cm. However, poor phosphorus availability might be found for the crops while the drip laterals were buried at 30 cm and thus limit the growth of crops. The phosphorus fertigation and subsurface drip irrigation are recommended to improve the use efficiency of phosphate fertilizer while a large lateral depth should be used with cautious.
王珍, 李久生*, 栗岩峰, 郝锋珍. 磷肥施入方式对土壤速效磷含量及玉米生长的影响[J]. 排灌机械工程学报, 2018, 36(10): 1023-1028.
WANG Zhen, LI Jiusheng*, LI Yanfeng, HAO Fengzhen. Effects of phosphorus fertigation on distribution of Olsen-P in soil and yield of maize. Journal of Drainage and Irrigation Machinery Engin, 2018, 36(10): 1023-1028.
[1]李久生, 栗岩峰, 王军, 等. 微灌在中国: 历史、现状和未来[J]. 水利学报, 2016, 47(3): 372-381. LI Jiusheng, LI Yanfeng, WANG Jun, et al. Microirrigation in China: history, current situation and prospects[J]. Journal of hydraulic engineering, 2016, 47(3): 372-381.(in Chinese)[2]张国桥, 王静, 刘涛, 等. 水肥一体化施磷对滴灌玉米产量、磷素营养及磷肥利用效率的影响[J]. 植物营养与肥料学报, 2014, 20(5): 1103-1109. ZHANG Guoqiao, WANG Jing, LIU Tao, et al. Effect of water and P fertilizer coupling on corn yield, P uptake, and P utilization efficiency with drip irrigation in a calcareous soil[J]. Journal of plant nutrition and ferti-lizer, 2014, 20(5): 1103-1109.(in Chinese)[3]JONG Myung Choi, CHIWON W Lee. Influence of elevated phosphorus levels in nutrient solution on micronutrient uptake and deficiency symptom development in strawberry cultured with fertigation system[J]. Journal of plant nutrition, 2012, 35(9): 1349-1358.[4]AYARS J E, PHENE C J, HUTMACHER R B, et al. Subsurface drip irrigation of row crops: a review of 15 years of research at the water management research laboratory[J]. Agricultural water management, 1999, 42(1): 1-27.
