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花期相遇是夺取杂交水稻制种高产的关键.为了达到花期相遇,各地在制种中都很重视父母本播种的叶片差.但是由于气候变化、土壤肥力、病虫为害,栽培措施等因素的干扰,花期往往产生偏差.因此,应该及早进行花期预测,根据预测结果采用相应的调节措施,促使花期相遇.目前,各地在幼穗分化后基本是用幼穗剥查法来预测花期.我们学习李义珍同志写的《水稻器官的相关生长和形态诊断》一文,根据茎生叶龄(过渡节间以上的第一伸长节间的叶片为第一茎生叶,第二伸长节间的叶片为第二茎生叶,余者类推.同一品种的茎生外数基本固定)与幼穗发育的密切相关(这种相关对相同茎生叶数的品种在不同栽培条件下基本一致),也试用茎生叶龄法来预测花期.实践证明,用茎生叶龄预测花期是一个切实易行的方法.
Flowering is the key to seize the high yield of hybrid rice seed production.In order to meet the flowering period, all around the seed production in the parents are very concerned about the sowing of poor.Therefore, due to climate change, soil fertility, pests and diseases, cultivation measures and other factors , Flowering are often biased.Therefore, should be early flowering forecast, according to the forecast results using the appropriate adjustment measures to promote the flowering encounter.At present, after the spikelet differentiation around the spikelet method is basically used to predict the flowering.We learn Li Yi-Zhen According to the article “Relevant growth and morphological diagnosis of organs of rice” comrades, according to the stem leaf age (the first elongated internodes above the transitional internodes are the first stems, the second internodes are The second cauline leaves, the rest of the analogy. The same species of stems outside the number of fixed) and young panicle development is closely related to (the same number of stems and leaves of the same species under different cultivation conditions are basically the same), also try Stem leaf age method to predict flowering.Practice has proved that the use of stem leaf age to predict flowering is a practical method.