Investigation of the regulatory effects of water and nitrogen supply on nitrogen transport and distribution in wolfberry fields.

(2) The soil NO 3 − –N accumulation ranged from 64.45–215.27 kg·ha −1 under varying water and nitrogen levels, demonstrating a decreasing trend with increasing horizontal distance.

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At horizontal distances of 90 cm, 120 cm, and 150 cm, the average NO 3 − –N content in the 0–100 cm soil layer showed an increasing trend with increasing irrigation amount, and the average NO 3 − –N content of W3 decreased by 20.48%, 18.86%, and 26.25%, respectively, compared with that of W0. 3.1.2.

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