不同复合肥对小麦生长和土壤养分特征的影响

Effects of Different Compound Fertilizers on Wheat Growth and Soil Nutrient Characteristics

采用田间试验方法,以镇麦12为研究对象,研究不同配方的常规复合肥和控释肥对土壤肥力和小麦产量及其构成因子的影响,为泰州地区培肥地力和提高粮食产量提供理论依据。结果表明,常规复合肥和控释肥均能提高土壤有机质、全氮、有效磷和速效钾含量,其中控释肥(28-15-6)培肥效果最好;施肥可促进小麦生长发育,提高有效穗数、穗粒数和千粒重等,小麦产量增幅72.3%~89.0%,控释肥增产效果优于复合肥。综上,兴化地区小麦施肥推荐一次性施用控释肥(28-15-6)525 kg/hm^(2)。

Field experiments were conducted to study the effects of conventional compound fertilizer and controlled-release fertilizer with different formulas on soil fertility,wheat(Zhenmai 12)yield and its constituent factors,so as to provide a theoretical basis for improving soil fertility and grain yield in Taizhou region.Results showed that both conventional compound fertilizer and controlled-release fertilizer could increase the content of soil organic matter,total nitrogen,available phosphorus and available potassium,and the controlled-release fertilizer(28-15-6)was the best.Fertilization could promote the growth and development of wheat,increase the number of effective ears,grains per ear and 1000 grain weight,and increase the yield of wheat by 72.3%-89.0%.At the same time,the effect of controlled release fertilizer was better than that of compound fertilizer.To sum up,it was recommended to apply controlled release fertilizer(28-15-6)once for wheat in Xinghua area,with a dosage of 525 kg/hm^(2).