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399sv 392sv323sv

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1.20sv/ ha0.73sv/ ha

2.00sv/ ha 4.90sv/ ha

460

4447

47 42 39 40 39 39 40 4452 51 50 50 50 48 48 49

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50

100

150

200

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4.2 ☓1☓7=29.4 52.53%↓ 420☓0.03=12.6

420-12.6-29.4-52.5-107= 218.5

D 420-107-65.1= 247.9

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420☓0.5=210

28 8

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2019.12.16 2231

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