氮钾铁肥的不同配比对油菜生长及品质的影响研究

EFFECT OF THE PRESCRIPTION OF NITROGEN POTASSIUM AND IRON ON YIELD AND QUALITY OF RAPE

本文通过供试作物新华油菜研究了氮钾铁的不同配比对油菜产量、活性铁含量、硝酸盐的累积、维生素C含量的影响。结果表明:施用氮肥能极大地提高油菜产量,钾、铁肥增产效果不显著;铁肥是影响油菜体内活性铁含量的主因子,适量铁肥能够显著提高活性铁含量;氮钾铁肥均能提高油菜体内维生素C的含量;油菜体内硝酸盐的累积与氮肥施入量呈正相关,施用铁、钾可在一定程度上降低油菜硝酸盐累积量。经数学模拟和综合选优,本试验条件下油菜的最优施肥方案为柠檬酸铁:118.18～144.17kg/hm2,尿素:629.37～731.98kg/hm2,硫酸钾:585.23～673.65kg/hm2。

A xinhuayoueai pot experiment was conducted to study the effects of the prescription of N, K, Fe on yield, active Fe content, vitamin C content and accumulation of nitrate of rape. Results showed that N, K,Fe fertilizer could increase rape yield, but the effects of K, Fe fertilizer was not so obvious as N fertilizer. Fe fertilizer could increase active Fe content. N, K,Fe can all improve the content of vitamin C in the body of the rape to a certain extent ,but cant use them excessively. The nitrate accumulates and constructs the entering amount presents positive correlation, Using K, Fe can reduce the accumulating amount of rape nitrate to a certain extent. And select synthetically by mathematics simulation,the optimum application rates was Critic acid -Fe： 118.18- 144.17kg/hm^2, CO（ NH2 ）2：629.37 731.98 kg/hm^2, K2SO4：585.23 - 673.65 kg/hm^2.