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为使农户合理施肥,提高肥料利用率,实现农业可持续发展,2016年进行了错期地膜马铃薯施入不同配比氮磷钾自混肥肥效试验研究。结果表明,氮磷钾自混肥料配比以N∶P_2O_5∶K_2O=40∶15∶20,施肥量以纯N 600 kg/hm~2、P2O5225 kg/hm~2、K_2O 300 kg/hm~2商品薯产量最高,达37 738.1 kg/hm~2,极显著高于其他配比氮磷钾自混肥的商品薯产量;同时,该配比的经济效益也最高,达49 639.65元/hm~2。
In order to enable farmers to rationally fertilize, improve the utilization rate of fertilizer and realize the sustainable development of agriculture, a trial of fertilizer application efficiency of different proportion of nitrogen, phosphorus and potassium fertilizers was conducted in 2016. The results showed that the ratio of N, P and K fertilizers was N:P_2O_5:K_2O = 40:15:20, and the fertilizers were pure N 600 kg / hm 2, P 2 O 5225 kg / hm 2, K 2 O 300 kg / hm 2 The highest yield of potato was 37 738.1 kg / hm ~ 2, which was significantly higher than that of other compounded NPK fertilizers. At the same time, the economic benefit was the highest, reaching 49 639.65 yuan / hm 2 .