期刊论文

A PRELIMINARY STUDY ON SPECIFICALLY DESIGNED CULTIVATION OF COTTON——Ⅵ. THE EFFECTS OF COMBINATIONS AND INTERACTIONS OF NITROGEN, PHOSPHORUS AND POTASSIUM ON THE SEEDCOTTON YIELD OF TRANSPLANTED COTTON

中文

湖南农业大学学报(自然科学版)

1007-1032

1989

03

13-20

10.13331/j.cnki.jhau.1989.03.003

本校为第一机构

试验于1985～1986年在湖南农学院教学实验场进行。结果表明,在长沙地区供试土壤条件下,氮、磷、钾三要素其中两个因素固定在一定水平时,随着氮或钾施用量的增加,子棉产量成规律性的二次曲线变化,但磷对产量的影响没有规律。氮、磷、钾之间的交互作用以磷,钾的最强。

Two years' field experiments indicate that when two factorsout of three are fixed to a certain level, the seedcotton yield varies in aquadratic curve with the increase of nitrogen or potassium, whereas the yield ofseedcotton doesn't vary regularly with the increase of phosphorus, which maybe due to the availability of phosphorus in soil.The interaction between phosphorus and potassium is the strongest of allthree interactions and a good comb...