摘要
通过考察不同的土壤温度和湿度,考察了自制淀粉/PVA长效液体地膜、自制淀粉/腐植酸钠短效液体地膜覆盖对小白菜发芽的影响。结果表明,前者的成膜效果和后期的保湿效果较好,但对小白菜的发芽有抑制作用,其缺陷在于抑制发芽期间气体交换及幼苗顶出;后者对小白菜发芽有较好的促进作用,但由于腐植酸钠具有一定的盐度,保湿效果不如聚乙烯醇。
Through investigeting the difference temperature and humidity of soil,the effect of homemade starch/PVA long-acting liquid film and home made starch/sodium humate short-acting liquid film to chinese cabbage planting are compared.The result shows,the membrane effect and later period moisturiz-ing effect of the formers are good,but,it has inhibitory action to chinese cabbage germinating,its fault is restraining gas exchange and seedling ejection during germinate period;the latter has better auxo-action to chinese cabbage, but due to sodium humate has some salinity, its moisturizing effect is not equal to PVA.
出处
《河南化工》
CAS
2015年第5期26-30,59,共6页
Henan Chemical Industry
基金
泉州市科技局科学计划项目(2014Z119)
关键词
淀粉
聚乙烯醇
腐植酸钠
成膜
保湿
starch
poval
sodium humate
film build
preserve moisture
