首页/ 题库 / [问答题]简述薄荷的生长发育习性?的答案

简述薄荷的生长发育习性?

问答题
2021-12-28 10:54
查看答案

正确答案

长江流域薄荷出苗至停止生长需240d左右。薄荷一生可分为五个生育时期。
(1)发苗期:也称返青生长期,是幼苗发芽至开始分枝的一段时间。头刀40天左右,3月至4月上旬完成。二刀15-25天,老苗返青生长。
(2)分枝期:幼苗开始分枝至开始现蕾,是植株迅速生长时期。头刀5-7月完成,需80天左右,二刀为60-70天。
(3)现蕾开花期:7月上旬-7月下旬,下旬现蕾开花,现蕾至开花需15d左右。
(4)种子成熟:8月中下旬,开花至种子成熟需20天左右。8月中旬种子成熟,花期可延续至8月底,9月初。
(5)休眠期:10月下旬地上部停止生长,至次年3月上旬。


试题解析

相关题目
boost的意思是:help or encourage to increase or improve
eloquent的意思是:fluent or persuasive in speaking or writing

A campus emergency ______ occur at any time of the day or night, weekend, or holiday, with little or no warning.

大豆生长习性有几种?
薄荷各生育期左旋薄荷醇含量高低依次为花期、()、营养生长期。
果树根系生长有什么习性?栽培上如何加以调控?
下列()措施不符合唐菖蒲的生长发育习性。
简述三七的生长发育习性?
简述薄荷的生长发育习性?
种子植物茎的生长习性主要有()
()any case or suspected case of quarantinable disease,or any case of eruptive disease or any death be discovered,the local quarantine officer must be notified immediately.
Should any case or suspected case of quarantinable disease,or any case of eruptive disease or any death be discovered,the local Quarantine Officer must be()immediately.
Masters are()solely responsible for all damages or accidents of whatever kind resulting from the navigating or handling of their vessels by day or by night.
系统中雷达状态包括Unknown、Operational(or ON)、Failed(or OFF)、Detached。
The carrier is liable for loss of or damage to the goods or delay in delivery caused by fire,()the claimant proves that the fire arose from fault or neglect on the part of the carrier,his servants or agents.
Shutdown price(or point,or rule) 停业价格(或停业点、停业原则)
翻译:With Average or With Particular Average(WA or WPA)()
简述布尔算符(OR)的作用。
()shall be liable for loss of and damage to the Vessel and/or goods arising or resulting from inaccuracies in stating the description,quantity,weight,measurement or contents.
八角金盘的生长习性为()
广告位招租WX:84302438

免费的网站请分享给朋友吧