论文部分内容阅读
化肥长期大量不合理施用导致农田土壤pH值逐年下降,土壤酸化使得土壤理化性状恶化,生产能力衰退,严重制约着农业的健康稳定发展。施用土壤调理剂是预防和治理酸化土壤的重要手段,2014年河南省遂平县土肥站承担并安排了高活性硅钙镁钾土壤调理剂田间试验。结果表明,施用该调理剂能提高酸化土壤的pH值,改善土壤理化性状,促进小麦生长发育。在0~55kg/667m~2施量范围,产量随施用量增加而提高,但土壤调理剂减肥替代作用有限,在减施1/3化肥用量的情况下,产量低于常规施肥。
Due to the unreasonable application of chemical fertilizers for a long time, the pH value of farmland decreased year by year. Soil acidification led to the deterioration of soil physical and chemical properties and the decline of production capacity, seriously restricting the healthy and steady development of agriculture. Application of soil conditioner is an important means to prevent and control acidified soil. In 2014, Suifeng County, Henan Province, fertilizer station to undertake and arrange high-activity silicon-calcium-magnesium-potassium soil conditioner field trials. The results showed that the application of the conditioner can improve the pH of acidified soil, improve soil physical and chemical properties, and promote the growth and development of wheat. In the range of 0 ~ 55kg / 667m ~ 2, the yield increased with the increase of application rate. However, the effect of soil conditioner on weight loss was limited. The yield was lower than that of conventional fertilization when the dosage was reduced by 1/3.