叶面施肥对紫花苜蓿种子产量及质量的影响

Effects of Foliar Application Fertilizers on Alfalfa Seed Yield and Quality

该研究在甘肃省庆阳市南部研究了叶面喷施硼肥及磷酸二氢钾对紫花苜蓿种子产量、产量因子及种子质量的影响。结果表明:初花期和结荚期叶面喷施硼肥显著提高了紫花苜蓿的种子产量,最佳的喷施浓度为0.4%;叶面喷施磷酸二氢钾也显著提高了种子产量,最佳的施用浓度为0.3%。叶面喷施硼肥可显著降低收获种子的死种子比率,而对种子发芽势、发芽率、硬实率没有显著影响;叶面喷施磷酸二氢钾对紫花苜蓿种子的发芽势、发芽率没有显著影响,但死种子数随着施用浓度的增加显著下降,硬实率则随施用浓度的增加显著上升。

A field experiment was carried out in Qingyang,Gansu Province,to evaluate the effects of foliar application boron and KH2PO4 on alfalfa seed yield,seed yield components and seed quality.The results showed that foliar application boron significantly increased the seed yield,the prime application concentration was 0.4%. Foliar application KH2PO4 increased the seed yield as well,the prime application concentration was 0.3%. The application of boron decreased the death seed percentage significantly,but not changed the first count germination percentage and hard seed percentage significantly. The application of KH2PO4 did not affect the first count and germination percentage,but the death seed percentage decreased significantly and the hard seed percentage increased significantly with application concentration increasement.