黄花菜配方施肥技术研究

Fertilization Formula for the Cultivation of lily Flower

通过对黄花菜盆栽砂培试验、田间正交和氮磷肥单因素试验，研究了黄花菜配方施肥技术。结果是：黄花菜对N：P2O5：K2O三要素的最佳比例为2：1：2；对N、P、K三要索的总量以每亩40kg为宜（包括土壤供给量）。对不同肥力的土壤，每亩施用量的计算公式是：土壤中黄花菜可利用速效养分含量-每亩土壤速效性养分含量×黄花菜根系实际占用营养面积／栽培面积；在试验土壤条件下。要求施入N素9．5～13．5kg，P2O5 6．6～8．4kg；N、P单独施用，应酌量增加；N、P配合旆用府活当减少：最佳的施肥时期是三月下旬一次施入。

Through potted sandy culture, orthogonal test and N,P single factor experiments, fertilization formula for day - lily flower was studied. The results showed that the optimum ratio of N to P2O5 to K2O was 2：1：2, and the total amount of N, P and K was 40 kg mu^-1. As to the difference in soil fertility, the amount of applied fertilizer could be calculated by our formula.