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甜菜是无限花序植物。种株从始花到种子收获时,花序顶端仍有小花开放,而晚开的花形成无效种子。山东种株花期一般30～35天、尤其从开花到收获的多雨季节年份,在花枝顶端产生二茬花枝多,无效种子多,严重影响单位面积的种子产质量。若对种株采取人工摘尖措施,而在种株开花期是枝叶繁茂时期,田间人工操作既不方便,又费工。为此,我们在山东高密对种株进行化学摘尖研究。
Beet is an inflorescence plant. Plants from the beginning of the flower to the seed harvest, the top of the inflorescence flowers are still open, and late open flowers to form an invalid seed. Shandong flowering species generally 30 to 35 days, especially from the flowering to the harvest of the rainy season, the top of the flowering branches to produce more than two flowering branches, invalid seeds, seriously affecting the yield per unit area of the seed. If the species to take artificial hand-picking measures, and in the flowering period is the branches and lush period, the field of manual operation is not convenient, but also labor. For this reason, we conducted a chemical picking study on the seeds in Gaomi, Shandong Province.