Table 2 Yield of main crops in the Yangtze River Delta in 2018, and the amount of N and P absorbed by 100 kg of yield.

From: Spatiotemporal variation characteristics of livestock manure nutrient in the soil environment of the Yangtze River Delta from 1980 to 2018

Crop species

Total output/107 kg

N removed for 100 kg production/kg × 100 kg−1

The amount of P removed for 100 kg production/kg × 100 kg−1

Rice

1287.74

2.20

0.80

Wheat

490.19

3.00

1.00

Beans

62.72

7.20

0.75

Potato

35.50

0.50

0.09

Corn

73.07

2.30

0.30

Oil

79.14

7.19

0.89

Vegetables

3232.95

0.28

0.09

Orchard

637.01

0.21

0.03

Cotton

1.88

11.70

3.04

Sugar

38.65

0.18

0.02

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