种肥混播用小麦控释肥拌种量及效应分析

A dose study and effectiveness analysis on control-release fertilizers mixing with seed in wheat

本研究测定了三种种肥混播用控释肥在土壤中的养分释放特性,然后以不同拌种量下小麦苗期生长情况为依据,对三种控释肥的最佳拌种量及其效应进行分析。结果表明:小麦种肥混播技术对促进小麦苗期生长是可行的;种肥混播用控释肥的最佳拌种量取决于肥料前期的养分释放速率;施用较低释放率的C肥小麦发芽率高且不易烧苗;A肥、B肥、C肥最佳拌种量分别为种子质量的30%、30%、50%,7天平均高度分别提高了9.84%,8.52%,8.28%,平均单株干重分别提高了8.84%,8.48%,8.22%,与传统施肥相比,肥料用量节省了90%以上。

The study was conducted to measure the nutrient release characteristics of three different control-release fertilizers,and then investigate the optimum composition and effect analysis of fertilizer-seed mixture among three different fertilizers based on seeding growth of wheats under various fertilizing dosages.The results indicate it is feasible to apply such fertilizer-seed mixture in growing wheat seedlings.The optimal dose of control-release fertilizer for mixing with seed depends on the nutrient release rate in the early stage.The C fertilizer with lower release rate had higher germination rate and not easy to lead to burning seedlings.The optimum use for Fertilizer A,B and C are 30%,30% and 50% according to weight of seeds.Comparing to each control group,the corresponding optimum dose leads to an average height increase by 9.84%,8.52% and 8.28%,together with an average dry-mass increase by 8.84%,8.48% and 8.22% per seedling in seven days,respectively.Compared with traditional fertilization,the dosage of fertilizer was reduced by more than 90%.