“春争日,夏争时”“夏播无早,越早越好,”这两句农谚把夏播工作要争分夺秒抢农时的特点,描绘得很准确。对待夏播为什么要这么紧急呢?这是由于季节和作物生育条件所决定了的。大家都知道,作物的生育期都需要一定的外界条件,除了土壤、水分等条件外,主要受气候条件制约,其中又以热量条件影响最大,并起着决定性作用。一年春夏秋冬四季,总是冬去春来,夏往秋至。春天播种的作物在生育期间的气温是由低到高,日照由短渐长;夏播作物在生 “When the war of spring and summer is over,” “there is no early summer sowing and the sooner the better,” these two agricultural proverbs depict the characteristics of the summer sowing work in the race against the second to grab the peasant, which is very accurate. Why is it so urgent to treat summer sowing? This is due to the season and crop growth conditions. As we all know, crop growth period needs some external conditions, except soil, water and other conditions, mainly due to climatic conditions, which in turn affect the maximum heat conditions and play a decisive role. One year of spring, summer, autumn and winter seasons, always winter to spring, summer to autumn. Spring sowing of crops during the reproductive temperature is from low to high, sunshine from short to long; summer sowing crops in Health