亚麻生育期短,对速效性养分要求迫切;亚麻为直根系作物,根系密集层不是在0—4厘米表土中,而是在土壤的较深处;我省十年九春旱,亚麻丛形期和快速生长前期正处春早之时,土壤表层水分条件差,肥料施在表层不易为亚麻吸收。基于上述原因,我们于1979—1980年进行了田间和盆栽深施化肥研究,同时进行了大面积中间试验。其结果表明:深施肥的产量高,其中以深 Flax growth period is short, fast-acting nutrient requirements are urgent; flax straight root crops, root dense layer is not in the 0-4 cm topsoil, but in the deeper soil; nine years of drought in our province nine, linen clumps Period and rapid growth Early in the spring is early, the soil surface water conditions are poor, fertilizer applied to the surface is not easy to absorb flax. Based on the above reasons, we conducted field and pot fertilization studies in 1979-1980 and conducted a large-scale pilot study. The results show that: the high yield of deep fertilization, of which deep