采用在生长后期用清水更换营养液的方法，可明显降低小白菜硝酸盐的含量。
By replacing nutrition solution with clear water during the later stage of growth, the nitrate content of pakchoi was significantly reduced.
结果表明：施用有益微生物组合加菌糠可以促进小白菜生长、增加其产量和提高土壤养分含量。
Indicated that application the beneficial microorganisms combination adding waste meterial could promoted growth, increased yield of Brassica pekinesis and improve soil fertility.
结果表明，堆制发酵不充分的芦苇末基质严重抑制小白菜苗期的生长，植株根系腐烂，叶片发黄，生长停滞；
Results showed that insufficient composting reed residue substrates had inhibited the growth of Pak Choi seriously, in root rotting and leaf etiolating.
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