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红花草通过冬前营养器官的生长,第一、二次分枝的发生和营养物质的积累,春后进入茎叶猛长期。农谚说:“春雷响,红花长”。因此,充分利用春后到翻沤前这段温暧的气候条件,加强管理,是夺取红花高产最后一个有利时机。据余干县农科所试验,在红花生长后期,于雨季来到之前,采取深沟排渍和在“惊蛰”边增施尿素(每亩8斤)这两项措施,可以显著提高鲜草产量。他们在红花翻沤前的15天之内逐日测产比较,
Through the winter before the growth of safflower vegetative organs, the first and second branch of the occurrence and accumulation of nutrients, spring into the stems and leaves fierce long-term. Agricultural proverb said: “Spring thunder ring, saffron long.” Therefore, taking full advantage of the warm climatic conditions before spring and turning around to strengthen management is the last favorable opportunity to seize the high yield of safflower. According to the experiment by Yugan County Agricultural Science Institute, in the later stage of safflower growth, prior to the arrival of the rainy season, adopting deep-groove drainage and applying urea (8 kg per mu) to the side of “Jingzhe” could significantly improve fresh Grass production. They compare the daily output of 15 days before the safflower turnaround,