Over centuries the landscape changed to open chalk downland.

几百年后，这片土地变成了白垩丘陵地带。

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The main factors influencing the wheat yield in downland were initial nitrogenous dressing, the amount of nitrogenous fertilizer applied for different leaf age and close fertilization.

对模型进行解析，找出了影响五区小麦产量较大的因子是氮基肥、不同叶龄追施氮肥和密度。

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Downland spokesman Linda Thomas said there was a large number of young single homeless people in the city.

BBC: NEWS | UK | England | Southern Counties | Young homeless learn city living

Rod and I stopped there and lounged among the flowers, in a dry westerly wind, talking about the downland poet Edward Thomas, the downland painter Eric Ravilious, and why I should never have slept in Chanctonbury Ring.

BBC: England��s ghostly South Downs Way