苹果果树渗灌试验研究

1989到1991年对10年生国光和金帅苹果品种的果树进行的渗灌试验结果如下:1,能节水并可防涝;2,可增加土壤孔隙度,提高土壤养分含量;3,增加吸收根数量,促进树体的生长发育。座果率和单株(或单位面积)产量均比漫灌(对照)区高;4,到1991年,果品质量有了明显的改善;5,多孔陶土管成本低;6,田间管理方便。

Studies on Subsoil Irrigation of Apple Trees

The subsoil irrigation of 10 -year -old apple trees CV. "Ralls"and "Golden Delicious" were studied form 1989to 1991. The results were as follows: 1,It can economize on water demand and prevent waterlogging; 2 ,It can increase the .soil porosity and the content of soil nutrients; 3,It can increase the number of absorbing roots and promote the growth of trees. The percentage of fertile fruit and the yield per tree (or per unit area)treated were higher than the flooding irrigation (C. K)plot;4.By the end of 1991,the fruit qualities had improved significantly. 5,The cost of porous clay pipes were lower; 6,The field managements were convenient.