The optimal drainage line of potted flowers of soilless culture

Water is the source of life. China ranks No.13 among the water shortage countries. The most of the water is utilized in agriculture, while the utilization rate of irrigation water is only 40%, so it is very important to study on the theory and technology on high efficient water utilization. The purpose for this study is to find out the optimal drainage line on potted flowers through the analysis of experimental results of Aglaonema modestum and Rhododendron simsii Planch in different drainage lines.

起垅覆草对苹果园土壤温、湿、气变化的影响

对7a生新红星苹果采取行内起垄覆草处理,结果表明:起垅覆草对果园土壤具有改善其物理性状、调节温度和保持水分等多种作用。处理区表层土壤孔隙度提高6 5%,土壤含水量增加4 7%,冬季增温4 6℃,夏季降温达13 7℃。由于综合改善了根系生态条件,从而明显促进了根系生长发育,表层土壤中的根系分布比例增高。