The weight of roots and above ground parts and the seed cotton yield increased at irrigation, more fertilizer applied or early sowing conditions.

灌水、重肥与早播处理棉株根重、地上部重及籽棉产量等均增加。

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The weight of one hundred seeds, the content of starch and fat of early sowing is higher than late sowing, but the content of water and protein is significantly lower than late sowing.

早播籽粒百粒重、淀粉、脂肪含量显著高于晚播。而籽粒含水量、蛋白质含量显著低于晚播。

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Therefore, the protective measures including adjusting arrangement of cropping, breeding variety with higher resistance to low temperature and early sowing and early transplanting are put forward.

为此提出调整布局、培育抗低温品种、适时早播早栽、提高气候预测预警能力等防御措施。

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