摘要
试验采用苗床施肥，６个处理，３次重复，田间随机区组排列。试验结果表明，氮肥用量适宜，促进营养元素吸收利用，７～８月份苗木叶片含Ｎ量３．５％～４．０％，含Ｐ量０．２％～０．３％，含Ｋ量１．０％或稍高时，苗木生长良好。在该试验条件下，施Ｐ２Ｏ５１２０ｋｇ·ｈｍ２时，施纯Ｎ１８０ｋｇ·ｈｍ－２左右，幼苗产量、质量及施肥效益均达到较高水平。
The experiments on fertilizer application forDiospyros lotus were made with seed-lings grown in nursery bed,with 6 treatments and 3 repeats. The effects of added nitrogen and phosphorus on growth and foliar concentration of N, P and K of seedling were determined.When N content was 3.5%～4,P content was 0.2%～0.3%,K content 1.0% of foliar in Ju-ly and August,the seedlinggrowth was significant for yield and profit of seedlings. In local natural condition, application N 180kg/ ha and P2O5120kg / ha were the suitable fertilizer rate.
关键词
黑枣苗
氮素营养
施肥
Diospyros lotus L.seedling
nitrogen nutrition
factors content
econmic fertilizer application
