关键词: 松材线虫, 松材线虫

Abstract: Whether wastewater irrigation can proceed safely depends on proper wastewater quality and reasonable irrigation scheduling. In order to investigate the feasibility of domestic reclaimed water irrigation for cabbage and its proper irrigation schedule, pot trials were carried out with two kinds of water, i.e. EM treated domestic waste water (RW) and clean water (CW), and four lower limitations of soil moisture (60%, 70%, 80% and 90% of field capacity) were set. Cabbage yield and qualities such as total nitrogen, phosphorus and heavy metal (Cu, Cd and Pb) were investigated, with available nitrogen, available phosphorus, organic matter, EC and heavy metals in soil were examined. The results confirmed that the effect of wastewater irrigation on cabbage yield and absorption of nitrogen, phosphorus and heavy metal was not obvious, and the absorption ability of cabbage differed for metal sorts. Reclaimed water irrigation caused to augment of organic matter, available nitrogen and available phosphorus in soil, and the augment was relevant to irrigation lower limitation. In short, domestic reclaimed water could be used to short term irrigation for cabbage, and the irrigation schedule couldn’t adopt the indexes of clean water irrigation.