摘要
本研究运用三元二次旋转回归设计进行四季萝卜（ＲａｐｈａｎｕｓｓａｔｉｖｕｓＬ．ｖａｒ．ｒａｄｉｃｕｌｕｓ）的追肥研究。研究结果表明：在低肥力地块上种植四季萝卜，追肥对产量形成有重要作用．氮、磷、钾单独施用均有提高产量的作用，配合施用时，它们彼此间对产量形成有交互作用．氮肥施用过量，不利于磷、钾增产作用发挥，增施磷肥，对氮的增产作用有所促进。为获得较好的产量，追肥适宜的用量分别是Ｎ４９４．７０ｋｇ／ｈｍ２，Ｐ２Ｏ５３１１．８５ｋｇ／ｈｍ２，Ｋ２Ｏ３１７．４０ｋｇ／ｈｍ２。
Research on the amount of dressing fertilizers to radish was carried out usinga design of three factors with square rotation regression.The result has shown that nitrogen, phosphorus and potassium contributed to the yield of radish respectively,butdressing N,P2O5 and K2O in combination resulted in interaction among themselves.Overapplication of N reduced the effect of P2O5 and K2O on the yield. Increasing the amountof P2O5 to radish is benificial to the effect of N on the yield. To obtain the high yield,theappropriate amount of dressing fertilizers are:494. 7kg N/hm2, 311.85kg P2O5/hm2 and317. 4kg K2O/hm2 in cooperation with each other.In the future it is a basic method topay close attention to soil amelioration.
出处
《山东农业大学学报（自然科学版）》
CSCD
1996年第2期135-140,共6页
Journal of Shandong Agricultural University：Natural Science Edition
关键词
四季
萝卜
追肥
氮肥
磷肥
钾肥
radish
dressing fertilizer
nitrogen
phosphorus
potassium
