不同浓度保水剂添加对植物幼苗生长的影响

Effect of Different Concentrations of Super Absorbent Polymers on the Growth of Plant Seedlings

本文采用盆栽实验,研究了4个浓度梯度的保水剂(1∶1000、3∶1000、5∶1000、7∶1000)添加对榆、黑麦草、波斯菊、紫花苜蓿、红豆草的出苗、生长高度以及土壤含水率的影响。结果表明:(1)5∶1000实验组的黑麦草、红豆草、紫花苜蓿分别比对照延迟了2d、6d、6d,1∶1000、3∶1000实验组的出苗情况与对照相比差异不显著;(2)保水剂添加可以提高土壤表层含水率,添加保水剂实验组的土壤含水率分别是对照的1.78、4.07、10.10、12.38倍;(3)1∶1000、3∶1000浓度的保水剂添加增加了黑麦草、波斯菊、紫花苜蓿的存活天数。

In this paper,pot experiments were carried out to study the effects of four concentrations(1∶1000、3∶1000、5∶1000、7∶1000)on the emergence,growth height of Loliumperenne L.,UlmuspumilaL.,Cosmosbipinnata,Cav.Medicago sativa L.,OnobrychisviciaefoliaScop and soil water content.The results show:(1)Compared with the CK,Loliumperenne L.,Medicago sativa L.andOnobrychisviciaefoliaScop of 5∶1000 experimental group were delayed by 2d,6d,6d,1∶1000,3∶1000 experimental group of emergence was no significant difference compared with the CK;(2)Super absorbent polymer can increase the moisture content of soil surface,The soil moisture of the experimental group were 1.78,4.07,10.10,12.38 times of the control respectively;(3)The addition of SAP at 1∶1000 and 3∶1000 increased the survival days of LoliumperenneL.,CosmosbipinnataCav.andMedicago sativa L.