Karstification is mainly the chemical corrosion of water to soluble rocks, and also includes the mechanical erosion and the collapse as well as moving out, transporting and redepositing of matter.
ZD1 is cultured in liquid and wheat grain solid culture, and metabolic product is extracted to obtain watersoluble and liposoluble matter for preparing nematode killing biological toxin.
ZD1通过液体和麦粒固体培养后，从代谢产物中提取有效的水溶和脂溶性物质制备成杀线虫生物毒素。
3
This study was conducted to investigate the effect of the water - soluble organic matter (WSOM) extracted from peat and rice straw on the growth and the element uptake of rice by water culture.