无土秧和坑式秧、平畦秧在栽堵管理上有相同之处,又有自己的特点,按照这些特点进行无土秧的栽培管理,就能夺得水稻高产。通过两年粗浅观察,看出无土秧生理特点表现为:一、无土秧有缩短生育期的趋势:温室无土秧苗在适宜的播种期范围内可以缩短生育期。一九七七年在四十里店农科站观 Soilless seedlings and pit-type seedlings, Pingguanying planting and management in the management of the same, have their own characteristics, according to these characteristics of soilless seedling cultivation and management, will be able to win high-yielding rice. Through two years of superficial observation, we can see that the physiological characteristics of soilless seedlings are as follows: First, soilless seedlings have the tendency to shorten the growth period: Soilless seedlings in greenhouse can shorten the growth period within the suitable sowing period. In 1977 Shilaoren shop agricultural station concept