土壤结构改良剂在盆栽花卉土壤上的应用研究  

APPLICATION OF SOIL CONDITIONERS TO THE SOIL OF POTTING FLOWER-PLANTS

作　　者：万建伟[1] 朱永绥[1] 邵建清 王云翔[1] 

机构地区：[1]苏州职业大学农业分校

出　　处：《园艺学报》1989年第1期68-72,共5页Acta Horticulturae Sinica

摘　　要：将CMC(羧甲基纤维素钠盐,Carboxyl-methyl cellulose)和PVA(聚乙烯醇,Polyvinylalcohol)两种高分子聚合物,制备成土壤结构改良剂,从胶结性能、团聚体的稳定性、对土壤理化性质及花卉生育的影响等方面进行比较研究,认为PVA是目前盆栽花卉较为优良的土壤结构改良剂。 施用0.2％PVA可使粘壤土水稳性团聚体从25％左右提高到90％以上,团聚体的有效性超过两年,显著地改善了土壤孔隙性状,提高了土壤保水透水性和土壤温度改善了土壤养分状况,为花卉种子萌发、插条成活和以后的生育创造了极为有利的条件。In this study authors have selected PVA ( a polyviny.lalcohol ) as a soil conditioner from synthetic polymers in our country. Both PVA and CMC can improve soil physical and chemical properties, and enhan-ce the growth and development of flower-plants. But PVA has advan-tage over CMC. After utilizing 0.2% PVA in soil, the contect of soil water-stable aggregate ( >0.25mm ) is increased to 90% or more, it also can incr-ease soil total porosity and especially non-capillary porosity, and decrea-se soil volume weight. Soil becomes loose and friable. PVA is able to reduce soil water vaporation,and raise soil tempera-ture. The content of effective nitrogen and potassium of soil which is app-lied by PVA is higher than those of control,pH value is similar, but effective phosphorus is decreased.

关 键 词：CMC PVA 花卉 盆栽 土壤 

分 类 号：S688.1[农业科学—观赏园艺]