Scientia Agricultura Sinica ›› 2019, Vol. 52 ›› Issue (4): 690-700.doi: 10.3864/j.issn.0578-1752.2019.04.010


Effects of Application of Nitrogen on Melon Yield, Nitrogen Balance and Soil Nitrogen Accumulation Under Plastic Mulching with Drip Irrigation

XUE Liang1,MA ZhongMing2(),DU ShaoPing2,FENG ShouJiang1,RAN ShengBin2   

  1. 1Institute of Soil, Fertilizer and Water-saving Agriculture, Gansu Academy of Agricultural Science, Lanzhou730070
    2Gansu Academy of Agricultural Sciences, Lanzhou 730070
  • Received:2018-07-30 Accepted:2018-11-13 Online:2019-02-16 Published:2019-02-27
  • Contact: ZhongMing MA


【Objective】The study was aimed at dealing with the problems of fertilization on muskmelon production in field, and the effects of fertilizer on muskmelon yields, soil nitrate accumulation, nitrogen balance of soil nitrogen and nitrogen use efficiency under plastic mulching with drip irrigation were investigated. The purpose of this study was to provide theoretical basis for rational amount of applied nitrogen in muskmelon of fertigation system in Hexi irrigating region.【Method】The field experiment was carried out under plastic mulching with drip irrigation in muskmelon using the split plot design from 2016 to 2017. There was five nitrogen levels, including 0 (N0), 60 (N60), 120 (N120), 180 (N180), and 240 kg·hm -2 (N240), in sub plots to investigate the influence of different fertilizing amount of nitrogen on nutrient absorption and yield of muskmelon. The soil nitrate nitrogen distribution and accumulation were measured at the seeding, vining, fruit-set and mature stages. Furthermore, we also measured the yield of muskmelon at maturity.【Result】The results showed that the yield of the N180 treatment was higher than other treatments but it was showed no significant difference compared to N240. Nitrogen absorption of melon fruits and nitrogen harvest index were highest under N180 treatment. And the higher nitrogen recover efficiency, nitrogen agronomic efficiency and nitrogen physiological efficiency were observed under the treatment of N180 for two years, the ranges about 39.59%-40.22%, 56.61-61.44 kg·kg -1 and 142.98-152.76 kg·kg -1, respectively. And the highest soil NO3 --N content were observed at 0-40 cm soil layers of each treatment at the harvest stage of melon. Meanwhile, the soil NO3 --N contents were reduced with the increasing of depth in 0-100 cm soil profiles, and soil NO3 --N accumulates increased with increasing of the application amount of chemical fertilizer nitrogen. And soil NO3 --N accumulation of each treatment (0-40 cm) accounted for 46.74%-51.84% of total accumulation (0-100 cm). Melon nitrogen uptakes, soil NO3 --N accumulation and nitrogen apparent loss were positively correlated with the nitrogen application rates. Melon nitrogen uptakes, soil NO3 --N accumulation and nitrogen apparent loss accounted for 41.27%-41.36%,42.62%-43.41% and 15.32%-16.02% of the total nitrogen input, respectively.【Conclusion】The best nitrogen application rate was 180 kg·hm -2 under plastic cover with drip irrigation in melon production of Hexi corridor oasis irrigation area.

Key words: muskmelon, drip irrigation, nitrogen accumulation, nitrate accumulation, nitrogen use efficiency, nitrogen balance

Fig. 1

Rainfall and air temperature during the melon growth periods (2016, 2017)"

Table 1

Physical and chemical characteristics of the experimental soil"

Soil depth (cm)
pH 容重
Bulk density
Organic matter
Total N
Available P
Available K
2016 2017 2016 2017 2016 2017 2016 2017 2016 2017 2016 2017 2016 2017
0-20 8.44 8.39 1.38 1.36 6.24 5.67 0.55 0.68 8.85 7.45 25.77 27.38 101.07 142.33
20-40 8.31 8.32 1.60 1.51 6.25 5.24 0.53 0.57 4.44 3.17 28.37 36.51 69.97 106.07
40-60 8.37 8.32 1.58 1.54 4.07 4.03 0.34 0.42 3.79 2.39 37.00 33.06 62.07 122.50
60-80 8.29 8.37 1.53 1.61 5.43 4.65 0.49 0.51 4.65 3.58 23.64 29.85 107.90 87.83
80-100 8.33 8.30 1.45 1.40 8.58 5.10 0.58 0.54 4.34 4.45 44.22 30.76 118.60 132.59

Table 2

Effects of different treatment on yield, biomass and quality of muskmelon"

Average fruit weight (kg)
Commodity rate (%)
Yield (kg·hm-2)
Biomass (kg·hm-2)
Soluble solid (%)
2016 2017 2016 2017 2016 2017 2016 2017 2016 2017
N0 1.88d 1.89d 76.73 75.30 28866d 28478d 5632d 5501d 12.05 11.56
N60 1.99c 2.00c 82.75 81.37 32949c 32563c 6121c 6068c 12.64 12.81
N120 2.14b 2.16b 85.95 84.02 36803b 36315b 6726b 6581b 13.15 13.06
N180 2.31a 2.28a 86.37 84.76 39925a 38668a 7291ab 6996ab 14.24 14.59
N240 2.33a 2.30a 86.09 84.55 40138a 39138a 7433a 7256a 14.47 13.98

Table 3

Effects of different treatments on nitrogen absorption and nitrogen use efficiency of muskmelon"

N absorption (kg·hm-2)
NHI (%)
NRE (%)
NAE (kg·kg-1)
NPE (kg·kg-1)
2016 2017 2016 2017 2016 2017 2016 2017 2016 2017
N0 40.02d 43.93c 76.54 80.54
N60 73.55c 75.33bc 83.00 84.59 60.53a 50.04a 68.06a 68.10a 112.44c 136.09b
N120 92.50b 87.50b 83.73 84.58 48.48b 46.65ab 66.14a 65.31a 136.43b 140.01a
N180 106.24a 102.68a 85.20 85.29 40.22c 39.59b 61.44a 56.61ab 152.76a 142.98a
N240 104.02a 101.25a 82.27 81.94 30.90d 30.78c 46.97b 44.42b 152.01a 141.26a

Fig. 2

NO3--N contents in soil layers under different nitrogen fertilizer application rates"

Fig. 3

NO3--N accumulation after melon harvest in different soil depths under different nitrogen fertilizer application rates"

Table 4

Effects of different treatments on soil N balance of melon in 0-100 cm layers"

氮输入量N input 氮输出量 N output
N rate (kg·hm-2)
起始NO3--N Initial
Mineral N
Total input
Melon uptake
Residual NO3--N
Apparent loss
2016 2017 2016 2017 2016 2017 2016 2017 2016 2017 2016 2017 2016 2017
0 0 77.42 61.18 37.40 55.95 114.82e 109.91e 52.29c 51.66d 62.53e 58.25e 0 0
60 60 77.42 61.18 37.40 55.95 174.82d 169.91d 88.61b 81.68c 79.54d 82.09d 6.67d 6.13d
120 120 77.42 61.18 37.40 55.95 234.82c 229.91c 110.47b 107.64b 105.46c 101.60c 18.89c 20.67c
180 180 77.42 61.18 37.40 55.95 294.82b 289.91b 124.69a 122.93a 124.31b 128.87b 45.82b 38.11b
240 240 77.42 61.18 37.40 55.95 354.82a 349.91a 126.44a 125.53a 137.81a 144.03a 90.57a 80.34a
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