摘要
采用四元二次通用旋转组合设计，对影响夏谷茬小麦产量形成的密度、氮、磷、钾肥四项关键农艺措施进行了综合研究。结果表明，夏谷茬小麦每公顷产７．５ｔ以上的关键措施与每项措施增产作用的主次顺序是：密度（基本苗）＞磷肥用量＞氮肥用量＞钾肥用量。其最佳农艺组合方案是：基本苗１８７．０５～２６２．９５万／ｈｍ２；每公顷施纯Ｎ１５０—２２５ｋｇ；Ｐ２Ｏ５１１２．５～１６８．７５ｋｇ；Ｋ２Ｏ４１．２５ｋｇ以下。并建立了基本苗、氮、磷、钾肥用量与夏谷茬小麦每公顷产７．５ｔ以上产量关系的数学模型。
This paper dealt with the effect of density of basic seeding. N, P2OS5 and K2O on the yield of winter wheat after summer millet. The results shown that according to their effect on the yield of winter wheat, the sequence was as follows: denesity of basic seedling>amount of P2OS5>amount of N application>amount of K2O 1.87～2.63 million basic seedling / hm2 and application amount of 150～225kg N / hm2 and 112.5～168.75kgP2O5 and fewer than 41.25kg K2O were the best agricultural composed scheme. The mathmatic model of relationship between density of seedling、N、 P2OS. K2O and winter wheat after summer millet with yield over 7.5T / hm2 was established.
出处
《莱阳农学院学报》
1995年第4期252-256,共5页
Journal of Laiyang Agricultural College
关键词
谷茬麦
农艺组合方案
产量
小麦
winter wheat after susmmer millet
the best agricultural composed scheme
yield
