不同播种密度、不同N肥用量及不同NPK比例与亚麻产量的关系

Study on relation among product of flax and different density, amount of nitrogen, NPK ratio

研究了不同播种密度、不同N肥用量及不同NPK比例与亚麻产量的关系。结果表明，影响云南省冬季亚麻原茎产量的因素依次为：播种密度、施肥量、M，K比例；多数产区播种密度应达到3300万粒／hm^2，少数出苗率和成苗率较高的产区可适当降低播种密度；多数产区尿素施用量应控制在225kg／hm^2左右；多数产区N、P、K的施肥比例应采用2：1：1或1：1：2。

The relation among product of flax and different, density amount of nitrogen, NPK ratio was studied. The factor which influence the product of stem of flax most in winter in Yunnan is density, then amount of fertilizer, and NPK ratio. It is recommended that seed above 3 300 7万/hm^2 should be sowed, the sowed amount might be decreased properly where the rate of seedling emergence is relative high. Approximate urea is recommended for 225kg/hm^2, the NPK ratio recommended is 2：1：1 or 1：1：2.