Under paddy and plastic film upland condition, the senescence of rice and some physiological activities were studied. The results showed that upland cultivation of rice obviously affected the senescence. For the upland cultivation mode, rice was subjected to water stress, and the decrease rate of the physiological activity speeded up, then the rate accumulation of dry weight in grain slowed down and seed setting percentage reduced. As a result, the output reduced. Paddy of rice improved the factors of fl...
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