海水养殖废水灌溉对碱蓬和海蓬子生长和品质的影响

Effects of irrigation with saline aquaculture wastewater on growth and quality of Suaeda salsa and Salicornia bigelovii

通过田间试验,研究了海水养殖废水灌溉对碱蓬和海蓬子生长特性和品质的影响。结果表明:在7月中下旬,海水养殖废水灌溉显著降低了碱蓬的株高、基茎以及生物量,但并未影响海蓬子生物量。海水养殖废水灌溉对两种海水蔬菜的品质也产生了影响。海水养殖废水灌溉条件下碱蓬的蛋白质、可溶性总糖以及游离氨基酸含量均显著降低,而海蓬子可溶性总糖和游离氨基酸含量却显著增加。从矿质品质来看,7月15日,海水养殖废水显著降低了碱蓬Na+含量和海蓬子Ca2+含量,却提高了碱蓬K+,Mg2+含量和海蓬子Na+,K+含量。7月28日,海水养殖废水灌溉提高了碱蓬Na+含量和海蓬子Mg2+含量,却抑制了碱蓬的K+,Mg2+吸收。总体来说,在浙江温州滩涂上,海蓬子较碱蓬更适合海水养殖废水灌溉。

The effects of agricultural use of saline aquaculture wastewater for irrigation of Suaeda salsa and Salicornia bigelovii on growth and quality in a field-trial were studied. The results showed that plant height, stem width and shoot biomass of Suaeda salsa and plant height of Salicornia bigelovii significantly decreased by irrigation with saline aquacuhure wastewater, but not significantly affected biomass of Salicornia bigelovii in mid-to-late July. Contents of protein, total soluble sugars and free amino acid in Suaeda salsa significantly decreased under irrigation with saline aquaculture wastewater, while total soluble sugars and free amino acid in Salicornia bigelovii increased. On July 15th, contents of Na2＋ in Suaeda salsa and Ca22＋ in Salicornia bigelovii significantly decreased under irrigation with sa-line aquaculture wastewater, while contents of K＋ and Mg2 2＋ in Suaeda salsa and Na 2＋ and K 2＋ in Salicornia bigelovii increased. On July 28th, contents of Na 2＋ in Suaeda salsa and Mg2 2＋ in Salicornia bigelovii increased under irrigation with saline aquaculture wastewater, while absorption of Na 2＋ and Mg2 2＋ were inhibited in Suaeda salsa. Thus, aqua- cuhure wastewater irrigation was more suitable for Salicornia bigelovii than Suaeda salsa.