形态后熟 生理后熟

请问形态后熟和生理后熟德概念是什么?
2025-04-07 13:38:11
推荐回答(1个)
回答1:

以种子繁殖为主,通常先播种育苗再行移栽,亦可分株繁殖。
1.采种与种子贮藏选用移栽3~4年以后结的种子质量最好。当蓇葖果变为黄绿色时,应及时采收,避免日晒,干后,搓打出种子。黄连种子属胚后熟类型,需经历形态后熟与生理后熟两个阶段。促成种胚发育的温度条件在5~20℃为适宜,种子采收后如放在冰箱(5~10℃)内层积,可在6~9月内完成形态后熟。完成形态后熟的种子,还必须在0~5℃低温下1~3个月完成生理后熟。完成生理后熟的种子,于翌年春播种整齐出苗。因此,黄连种子需要经过一个低温阶段才能打破其休眠而发芽,在生产中种子脱粒后立即进行湿沙层积处理,置于低温条件下贮藏,才能完成胚后熟阶段。
2.播种育苗最好整成宽130~150cm,高15cm的高畦,长10~15m为宜,四周开排水沟。每畦间沟宽40cm,深15cm。于10~11月份用经过贮藏的种子播种,由于种子细小,需用种子体积20~30倍的细腐殖质土与种子拌和均匀、撒播于畦面,然后盖0.5~lcm厚干细腐熟牛马粪一层。播种后一般于翌年2月份出苗。每667平方米播种2.5~3kg,可育成45万~46万株苗。第二年春移栽定植,按行株距10cm×l0cm,一般每667平方米栽苗6万株左右。黄连移栽前,用5~10μl/L2,4-D溶液浸根12h,可提早20天以上生根,且根系增长速度快。
3.分株繁殖3~4年生的植株,可进行分株,选留根茎长0.5~1cm的连苗作分株苗,栽后当年就有70%植株开花结籽。分株繁殖,有生长快、质量好的优点。

那么看样子
形态后熟好像是一个小孩子长大了
生理后熟类似于性成熟

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