基于化肥、菌肥与沼肥对白菜生长影响的经济对比分析

Comparative Analysis on the Influence of Different Fertilizer on Growth of Chinese Cabbage

试验以白菜为试材,研究了菌肥、沼肥与化肥单独施用下对作物生长影响及经济对比分析。综合不同的指标做出合理预测分析,结果表明施用沼肥对土壤全氮、速效磷、速效钾的影响效果最好,一轮耕种后种植白菜的土壤中全氮含量为765 mg·kg^(-1),速效磷含量为5.98 mg·kg^(-1),速效钾含量为138.95 mg·kg^(-1);浇沼肥作物品质最优,总糖含量占4.7%,比浇水提高了159.16%,VC含量85.25 mg·kg^(-1),比浇水提高了23.68%;相对于无肥、化肥、菌肥,施用沼肥经济效益最高。菌肥对白菜品质影响较好,总糖含量占4.15%比浇水的提高了128.97%,VC含量73.59 mg·kg^(-1)比浇水提高了11.98%;对土壤的肥力提升效果趋势优于浇化肥的,经济效益较低,不适合单独施用。综上,对化肥、菌肥、沼肥对作物生长影响进行经济对比分析得出沼肥优于菌肥优于化肥。

Using Chinese cabbage as test material, the effects of chemical fertilizers, microbial fertilizers and biogas fertilizer on crop growth were studied and their economic comparative analysis were made. The resuhs showed that the biogas fertilizer had the best effect on total soil nitrogen （765 mg . kg-1 ） , available phosphorus （5.98 mg . kg-1 ） and available potassium（ 138.95 mg . kg-1）. And the cabbage quality applied by biogas fertilizer were also better than other fertilizer, with the total sugar content of 4.7 % , which was 159.76 percent higher than that of control （watering without fertilizer） ; the VC content was 85.25 mg . kg- 1, which was 23.68 % higher than that of control. Biogas fertilizer had the best economic benefit comparing with chemical fertilizer and microbial fertilizer. Microbial fertilizer had better effect on soil fertility and cabbage quality than that of chemical fertilizer, but it was not suitable for individual use due to the relatively low economic benefit. In summary, the biogas fertilizer was superior to the microbial fertilizer, while microbial fertilizer superior to the chemical fertilizer.