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基于盐碱地稻作改良,菌糠、Al_2(SO_4)_3各具优势。以大安市盐碱地稻田为供试对象,共设置菌糠搭载Al_2(SO_4)_3、菌糠、Al_2(SO_4)_3改良剂、单施化肥和池梗地对照五个处理,分别从水稻栽植前及当季生产结束后对盐碱地养分状况进行对比分析。结果表明:与对照相比,基于灌水泡田,四个改良处理均能够迅速提升盐碱地稻田有机质、有效磷的含量,Al_2(SO_4)_3、菌糠及单一化肥施入短期内即可促进稻田全磷、全钾含量的提升,搭载Al_2(SO_4)_3的菌糠尽管对两者影响不大,但能缓解碱解氮的流失;历经水稻生育期,菌糠及其配施Al_2(SO_4)_3以及单一化肥施入的三个处理均能有效促进盐碱地稻田有机质的矿化,反之,Al_2(SO_4)_3改良剂更利于有机质含量的累积;在此过程,各改良处理条件下的全磷含量均有所增加,但碱解氮含量均有消耗,其中,以菌糠搭载Al_2(SO_4)_3处理的效果更为明显;在水稻生产过后,与对照相比,单施化肥及菌糠施入能够对稻田全钾含量有所促进,而单施化肥及Al_2(SO_4)_3改良剂处理能够加速有效磷的消耗,与此同时,菌糠搭载Al_2(SO_4)_3、Al_2(SO_4)_3改良剂及单施化肥的三个处理更有利于速效钾含量的累积。
Based on the improvement of rice in saline-alkali soil, Al2 (SO4) 3 and fungi bran have their own advantages. In order to investigate the effects of Al 2 (SO 4) 3, fungi chaff, Al 2 (SO 4) 3 improver, chemical fertilizers and pond stems on the saline-alkali soil in Da’an City, After season production, the nutrient status of saline-alkali soil was compared and analyzed. The results showed that compared with the control, all the four improved treatments could rapidly increase the content of organic matter and available phosphorus in the paddy soils, and Al 2 (SO 4) 3, bran and single fertilizer could promote the growth of paddy fields Phosphorus and total potassium content, Al2 (SO4) 3 -containing fungus bran could alleviate the loss of alkali-hydrolyzable nitrogen even though it had little effect on them. After rice growth stage, fungus bran and Al2 (SO4) 3 And the three treatments with single fertilizers could effectively promote the mineralization of organic matter in the saline-alkali paddy soil. On the contrary, Al 2 (SO 4) 3 improver was more conducive to the accumulation of organic matter. In this process, the total phosphorus content , But the contents of alkaline hydrolysis nitrogen were consumed. Among them, the treatment with Al 2 (SO 4) 3 was more obvious. After the production of rice, compared with the control, The content of total potassium in paddy field was promoted, while the application of chemical fertilizer and Al 2 (SO 4) 3 improver could accelerate the consumption of available phosphorus. Meanwhile, Al 2 (SO 4) 3 and Al 2 (SO 4) 3 improver The three treatments of fertilizer alone are more conducive to the accumulation of available potassium.