| Effects of combined nitrogen and zinc fertilization on nutrient transport, partitioning, and storage of nitrogen and zinc in melon |
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| DOI：10.7606/j.issn.1000-7601.2025.04.09 |
| Key Words: melon nitrogen and zinc co\|application nutrients absorption nutrients transformation yield quality |
| Author Name | Affiliation | | SHI Duopeng | Institute of Soil, Fertilizer and Water\|saving Agriculture, Gansu Academy of Agricultural Science, Lanzhou, Gansu 730070, China | | ZHAO Anyu | Zhangye Water\|saving Agricultural Experimental Station, Gansu Academy of Agricultural Sciences, Zhangye, Gansu 734000, China | | XUE Liang | Institute of Soil, Fertilizer and Water\|saving Agriculture, Gansu Academy of Agricultural Science, Lanzhou, Gansu 730070, China； National Agricultural Experimental Station for Agricultural Environment, Zhangye, Gansu 734000, China | | Yang Junlin | Institute of Soil, Fertilizer and Water\|saving Agriculture, Gansu Academy of Agricultural Science, Lanzhou, Gansu 730070, China | | Muhammad Ali Raza | Institute of Soil, Fertilizer and Water\|saving Agriculture, Gansu Academy of Agricultural Science, Lanzhou, Gansu 730070, China |
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| Abstract: |
| To address the issue of unclear application rates of nitrogen and zinc fertilizers in melon production within the irrigation area, a split\|plot design was employed. Four levels of pure nitrogen (0, 120, 240, 360 kg·hm-2) and four levels of zinc sulfate (0, 25, 50, 75 kg·hm-2) were set, resulting in a total of 16 treatments (N0Zn0, N0Zn25, N0Zn50, N0Zn75, N120Zn0, N120Zn25, N120Zn50, N120Zn75, N240Zn0, N240Zn25, N240Zn50, N240Zn75, N360Zn0, N360Zn25, N360Zn50, and N360Zn75). This study aimed to investigate the effects of combined nitrogen and zinc application on the absorption and transport of these nutrients, as well as on the yield and quality of grafted melons in the irrigation area. The results showed that during the growth period, the contents of nitrogen and zinc in the plant organs increased first and then decreased with the increase of the application amounts of N and Zn. During the maturity period, the comprehensive contents of nitrogen and zinc in the fruit and seed of melons treated with N240Zn25 were the best, and the nitrogen contents increased by 7.29% to 47.14% and 5.79% to 37.70% compared with the other treatments, respectively. The zinc contents increased by 9.28% to 104.81% and 2.66% to 15.01% compared with the other treatments, respectively. The treatment with high cumulative contribution rates of nitrogen and zinc to grains in terms of the transport efficiency and transport volume of nitrogen and zinc had low contribution rates to the post\|flowering absorption of nitrogen and zinc and the post\|flowering absorption of nitrogen and zinc. The yield of melons, the content of soluble solids, and the content of vitamin C all showed a trend of increasing first and then decreasing with the increase of the application amounts of nitrogen and zinc. Among them, the N240Zn25 treatment performed better, and its yield (33 896.94 kg·hm-2) was 12.04% to 51.40% higher than that of the other treatments. The contents of soluble solids and vitamin C increased by 9.58% to 35.85% and 10.91% to 31.64% compared with the other treatments, respectively. In conclusion, applying 240 kg·hm-2 of nitrogen fertilizer and 25 kg·hm-2 of zinc sulfate in melon cultivation within the irrigation area can enhance the absorption and transport of nitrogen and zinc during the plant growth period, leading to increased melon yield and improved zinc nutritional quality. |
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