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适时早播是1956年推广的先进植棉技术中的一项重要措施。早播的目的,主要是充分利用棉花生长季节,争取棉花早出苗、早现蕾、早吐絮,以达到早熟增产的目的。即不是愈早愈好,也不是不问其他条件能否配合,孤立地把播种期提早。1956年全国各地普遍推行这项技术措施的结果证明,适时早播的一般都获得了显著的增产效果,如西安市大寨农业社4月
Early bird sowing is an important measure in advanced cotton planting technology promoted in 1956. The purpose of early sowing, mainly to make full use of cotton growing season, for cotton early emergence, early budding, bolting early, in order to achieve the purpose of early maturity and yield. That is not the sooner the better, nor does it not ask whether other conditions can cooperate with the sowing date in isolation. The results of the widespread implementation of this technical measure throughout China in 1956 proved that timely early sowing generally achieved remarkable yield-increasing effects. For example, Dazhai Agricultural Society of Xi’an in April