豫东潮土区大蒜氮磷钾推荐施肥研究

Study on nitrogen,phosphorus and potassium fertilizer recommendation of garlic in fluvo-aquic soil region eastern Henan

通过大蒜氮肥用量和丰缺指标多点田间试验研究,采用Excel进行统计分析,建立不同氮肥用量与产量的效应函数,推荐大蒜氮肥用量369.9 kg/hm2;以土壤中速效磷、速效钾养分的测定值及其相对产量拟合回归方程,再以相对产量的55%、75%、80%、90%划分土壤养分丰缺指标,同时结合大蒜的目标产量,进行磷、钾施肥量的推荐,分别为200、300 kg/hm2。

This paper investigated the usage of garlic nitrogen fertilizer and the shortage as well as abundance parameters through muhi-target field trials. Using Excel for statistical analysis, the effect function between different usage of nitrogen fertilizer and yield was established, the recommended usage of nitrogen fertilizer was 369.9 kg/hm2. The regression equation was fitted between the measured value of soil available phosphorus and potassium nutrient and deficiency were divided as 55%, 75%, 80%, 90% of the relative yield. According to the target yield, the usage of phosphorus and potassium fertil- izer was recommender as 200, 300 kg/hm2.