摘要
通过二年三茬作物的田间微区(15)~N 示踪实验,研究了亚硫酸铵(ASI)、亚铵造纸制浆废液(WPF)和液氨(AA)的肥效和残效。作物是水稻—小麦—水稻,主要结果表明,这三种肥料都是很有使用价值的,有待开发。
The fertilizer efficiency and residual effect of ammonium sul- fite(ASI),waste fluid of paper making by ammonium sulfite (WPF),anhydrous ammonia(AA) and ammonium sulfite (CK) were studied with planting paddy- rice (O.sativa.L.sub sp.japonica KATO)-whaat (Triticura aestivum L.)-paddy rice in farm-plot and pot culture in Beijing of China from 1984 to 1985 (reap three crops) .Results obtained were summarized as follows: 1.The yield of paddy rice (1st crop) was increased more obviously by ASI, WPF and AA than by CK.The order was: AA>WPF>ASI>CK The fertilizer efficiency of AA,WPF and ASI was found to be higher than CK. 2.Order of utilized rate of there fertilizers in rice plant was:ASI (65.5%)> AA(63.9%)>WPF(50.3%)>CK(38.0%)Sum of utilized rate in three crops was ASI (68.7%)>AA(66.4%)>WPF(53.2%)>CK(38.5%). 3.ASI was produced with ammonia-method to retrieve waste gas from sul- pharic acid industry.WPF was from paper mill with ammonium sulfite method which prevented pollution from paper making through basic process.AA was high analysis fertilizer (N 82%)and lesser production costs.So far these fertili- zers have not been utilized extensiverty in farm crops in China.In view of the above study result,the three fertilizers were worth exploitage.
