Acta Agriculturae Boreali-Sinica ›› 2023, Vol. 38 ›› Issue (6): 127-133. doi: 10.7668/hbnxb.20194156

Special Issue: Corn Soil fertilizer Drought and water saving

• Resources & Environment·Plant Protection • Previous Articles     Next Articles

Response of Drip-irrigated Maize to Different Phosphorus and Potassium Fertilization Methods in Semiarid Region of Northeast China

LI Qian, QIN Yubo, SUN Bo, WANG Meng, KONG Lili, YIN Caixia, XU Chen, LIU Zhiquan   

  1. Institute of Agricultural Resources and Environment,Jilin Academy of Agricultural Sciences,Key Laboratory of Plant Nutrition and Argo-Environment in Northeast Region,Ministry of Agriculture and Rural Affairs,Changchun 130033,China
  • Received:2023-03-30 Published:2023-12-28

Abstract:

This research studied the effects of different phosphorus and potassium fertilization methods on maize growth,nutrient uptake and utilization.It was determined suitable fertigation timings and frequencies of phosphorus and potassium fertilizer,and to provide a theoretical basis for drip fertilization technology of maize with phosphorus and potassium in semi-arid areas of northeast China.A field experiment was conducted in 2018—2019,with Xiangyu 998 as a test material,six treatments were set up,P0 (No phosphorus fertilizer),K0 (No potassium fertilizer),P1(100% basal application of P fertilizer,50% basal application of K fertilizer,the other 50% fertigation three times),K1(100% basal application of K fertilizer,50% basal application of P fertilizer,the other 50% fertigation four times),P1K1(100% basal application of P and K fertilizer),and P4K3(50% basal application of P and K fertilizer,the other 50% P fertigation four times and the other 50% K fertigation three times).The results showed that compared with the P1 treatment,the P4K3 treatment increased maize yield by 4.2%,dry matter accumulation at maturity by 6.8% (P<0.05),post silking P accumulation by 33.3% (P<0.05),and significantly improved the P fertilizer recovery efficiency and agronomic efficiency by 21.6 percentage points and 28.5%,respectively.Compared with the K1 treatment,the P4K3 treatment increased maize yield by 3.5%,dry matter accumulation at maturity by 5.1%,and significantly improved the K fertilizer recovery efficiency and agronomic efficiency by 14.9 percentage points and 53.5%,respectively;compared with the single application of phosphorus and potassium treatment,maize yield was increased by 5.0%,the uptake of phosphorus after silking was increased by 26.3%,and P fertilizer recovery efficiency and P agronomic efficiency were increased by 19.5 percentage points and 32.6%,respectively;K fertilizer recovery efficiency and agronomic efficiency increased by 15.2 percentage points and 95.5%,respectively.Fractional fertigation of phosphorus and potassium fertilizer could not only be beneficial to improve yield of maize,but also promote post-silking nutrient uptake and improve nutrient utilization under drip irrigation conditions.Comprehensive consideration,P4K3 treatment is a more suitable drip fertigation technique for field production.

Key words: Maize, Phosphorus and potassium fertilizer, Drip irrigation, Yield, Phosphorus and potassium utilization

Cite this article

LI Qian, QIN Yubo, SUN Bo, WANG Meng, KONG Lili, YIN Caixia, XU Chen, LIU Zhiquan. Response of Drip-irrigated Maize to Different Phosphorus and Potassium Fertilization Methods in Semiarid Region of Northeast China[J]. Acta Agriculturae Boreali-Sinica, 2023, 38(6): 127-133. doi: 10.7668/hbnxb.20194156.

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