关于早稻秧苗发生白苗、油菜华而不实和大麦空壳现象原因的分析

• 机 构: 义乌县农业局农技股,
• 出 处: 科技简报
• 发表日期: 1974年19期
• 关键词: 早稻 空壳现象 油菜 大麦 叶期 散生 六棱大麦 遗传 环境条件 褪绿

一、早稻秧苗发生白苗的原因白秧苗有两种,一是病株散生,零星分布,一般比健株稍高,全株白化,大多在三叶期以后就枯死消失,这是由遗传生理引起;另一种是成丛或整丘发生,秧苗进入二、三叶期时,第一片叶仍保持绿色,第二片、第三片叶都褪绿发白。当环境条件改善以后,心叶仍能抽出并保持青绿,恢复生长,但严重的要枯死。这种白秧苗产生的原因,据我们三年来的调查,主导

First, the reasons for the occurrence of white rice seedlings of early rice There are two white seedlings, one diseased plants scattered, sporadic distribution, generally slightly higher than the healthy plants, whole plant albino, mostly died after the three-leaf stage disappeared, which is inherited Physiological cause; the other is clumped or whole hill occurs, seedling into the second and third leaf period, the first leaf remains green, the second leaf, the third leaf chlorotic green. When the environmental conditions improve, the heart leaves can still be extracted and remain green, restore growth, but serious to die. This white seedling causes, according to our three years of investigation, leading