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Effect of Sand Burial and Water Supply on Seedling Emergence of P.cornutum and P.dolabratum in Mu Us Sandy Land(PDF)

《北方园艺》[ISSN:1001-0009/CN:23-1247/S]

Issue:
2015年04
Page:
76-80
Research Field:
Publishing date:

Info

Title:
Effect of Sand Burial and Water Supply on Seedling Emergence of P.cornutum and P.dolabratum in Mu Us Sandy Land
Author(s):
HUANG Xiu-mei1; 2; HAO Li-zhen2; 3; ZHANG Feng-lan2; 3; YANG Zhong-ren2; 3
(1.Vocational Technology College，Inner Mongolia Agricultural University，Hohhot，Inner Mongolia 010019；2.Key Laboratory of Wild Peculiar Vegetable Recourse and Germplasm Enhancement，Hohhot，Inner Mongolia 010019；3.Agriculture College，Inner Mongolia Agricultural University，Hohhot，Inner Mongolia 010019)
Keywords:
Mu Us Sandy Land; P.cornutum; P.dolabratum; sand burial; water supply; seedling emergence
PACS:
-
DOI:
10.11937/bfyy.201504018
Abstract:
Taking P.cornutum a special species in China and P.dolabratum listed an endangered species in 1992 as materials，the effect of water supplying and sand burial on seedling emergence of P.cornutum and P.dolabratum were studied，a set of experiments were conducted under six depths of sand burial and four kinds of continual water supply.The results showed that the buried depth was closely correlated with water supply.When the water supply was 22.5 mm that would be 50% of the average rainfall of Mu Us Sandy Land in June,the seeds couldn’t emerge.When the water supply was 50 mm(the average rainfall in June),the seeds could germinate on the superficial layer of P.cornutum(1—4cm) and P.dolabratum(1-2cm).When the water supply was 100 mm (the average rainfall in July ),a few seeds could emerge well in 1-4cm of P.cornutum and 0-6cm of P.dolabratum.When the water supply was 150 mm (50% of water supply of the average rainfall in July),the seeds could emerge in 1-8cm of P.cornutum and 0-8cm of P.dolabratum.The emergence rate of P.cornutum would be increase with water supply increasing.For P.cornutum, there was the fastest emergence rate in 135 mL in all sand burial，and 2cm in all the buried depth.For P.dolabratum, 90 mL was faster than 135 mL in the water supply of the seedling emergence,and 1cm was the fastest seedling emergence in all sand burial depth.Based on our experiment results and precipitation characteristics of the Mu Us sandy land，there would be the important conditions for P.cornutum and P.dolabratum in 1.0-2.0cm buried depth and 100 mm average rainfall.

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Last Update: 2015-04-17