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研究氮磷钾肥、微肥、有机肥三者配施对紫花苜蓿饲草产量和品质的影响。采用田间试验。结果表明:几种配施肥料能显著提高紫花苜蓿饲草产量,与未施肥处理相比,施肥处理饲草产量增幅为13.70%～28.71%,且氮磷钾肥、微肥、有机肥配施效果显著优于氮磷钾肥和微肥,氮磷钾肥、微肥、有机肥三者配施效果最好,显著优于其他处理;能显著提高紫花苜蓿粗蛋白、粗纤维、粗灰分、磷、锰、钼、硼、钴、硒的含量,促进紫花苜蓿粗脂肪、铁、铜、锌含量的提高,且氮磷钾肥、微肥、有机肥三者配施效果最好,显著优于未施肥处理,导致了紫花苜蓿无氮浸出物含量显著降低。在肥力水平不高的土壤上,对初种植的紫花苜蓿应合理配施氮磷钾肥、微肥和有机肥。
The effects of NPK fertilizers, micronutrients and organic fertilizers on the forage yield and quality of alfalfa were studied. Field trials. The results showed that several kinds of fertilizers could significantly improve the forage yield of alfalfa. Compared with no fertilization treatment, the forage yield increased by 13.70% -28.71%, and the compounding effect of NPK fertilizers, trace fertilizers and organic fertilizers Was significantly better than the NPK fertilizers and trace fertilizers, NPK fertilizers, trace fertilizers and organic fertilizers were the best, which was significantly better than other treatments; significantly increased alfalfa crude protein, crude fiber, crude ash, phosphorus, manganese , Molybdenum, boron, cobalt and selenium, and promoted the increase of alfalfa crude fat, iron, copper and zinc content, and the combination of NPK fertilizer, micronutrient fertilizer and organic fertilizer had the best effect, which was significantly better than that without fertilization , Resulting in a significant reduction of nitrogen-free extract content of alfalfa. Fertility in the soil is not high, the first planted alfalfa should be rationally allocated NPK fertilizers, trace fertilizers and organic fertilizer.