不同氮磷配施对旱地胡麻总糖含量及品质的影响

本试验通过研究不同氮磷配施对旱地胡麻生育期期间植株中总糖含量的变化规律和品质的影响，以期为旱地胡麻科学施肥提供一定理论依据。结果表明：氮磷配施可以提高植株中总糖的含量，当氮肥、磷肥施用量均为60 kg/hm²时，植株中总糖含量最大。在胡麻整个生育期，植株中总糖含量呈M型，在现蕾期总糖含量最低。不同氮磷配施对胡麻含油率、亚油酸和棕榈酸的影响差异不显著，但硬脂酸和油酸含量均高于对照(N0P0)。与不施肥相比，单施氮、磷肥均可促进胡麻籽粒产量增加，但氮磷配施促进效果更显著，其中N1P1籽粒产量为1620.81 kg/hm²，较CK (N0P0)增加了27.24%。

Combined Fertilization of Nitrogen and Phosphorus:Effect on Total Sugar Content and Quality of Dryland Flax

In order to conduct scientific fertilization on dryland flax, the effect of combined fertilization of nitrogen and phosphorus on total sugar content and quality was studied. The results showed that combined fertilization of nitrogen and phosphorus could increase the content of total sugar in plants, and the content reached the highest when the application amount of nitrogen and phosphorus was 60 kg/hm², respectively. In the whole growth period, the total sugar content in plants showed a M type, and reached the bottom in squaring period. Different combinations of nitrogen and phosphorus had different effects on flax oil length, linoleic acid content and palmitic acid content, but the contents of stearic acid and oleic acid were higher than that of CK (N0P0). Compared with no fertilization, single application of nitrogen or phosphate could increase the grain yield of flax, but the increasing effect of combined fertilization was more obvious, the yield of treatment N1P1 was 1620.81 kg/hm², which increased by 27.24% in comparing with that of CK (N0P0).