大麦与谷类科学

为筛选大麦草专用最优叶面肥（含腐植酸水溶肥）施用方案，以垦啤麦13、垦啤麦15、垦啤麦26为试验材料，采用“品种+叶面肥喷施次数”二因素设计，研究含腐植酸水溶肥不同喷施次数对大麦草生育期、产量及品质的影响。结果表明：喷施含腐植酸水溶肥可使大麦抽穗期提前1～2 d；降低大麦草株高、增强抗倒性，显著提高鲜草产量；喷施2次后，大麦粗蛋白含量达最高水平（17.43%），且酸性洗涤纤维和中性洗涤纤维均符合优级标准。最优施用方案：大麦抽穗前1周喷施含腐植酸水溶肥第1次、收获前1周喷施第2次，该方案下大麦草营养均衡、消化率高，适配饲喂需求。

To determine the optimal application schedule of humic acid water-soluble foliar fertilizer for barley grass, three varieties(Kenpimai 13, Kenpimai 15, and Kenpimai 26) were subjected to a two-factor randomized design involving variety and foliar application frequency. The results showed that foliar fertilization advanced the heading stage by 1-2 days, reduced plant height,enhanced lodging resistance, and significantly increased fresh grass yield. With two sprayings, the crude protein content of barley reached the highest level(17.43%) under the two-spray treatment. Meanwhile, the contents of acid detergent fiber(ADF) and neutral detergent fiber(NDF) both met the the criteria for premium-grade forage. The optimal application scheme was determined as follows:the first application one week before heading, and the second application one week before harvest—achieved balanced nutrition and high digestibility, meeting feeding requirements.