配合施肥对牧1号苜蓿产量和品质的影响

在天山畜牧昌吉生物工程有限责任公司榆树沟良种繁育基地,土壤较瘠薄,盐碱较重的地段,进行了苜蓿配合施肥试验。结果表明:配合施肥可提高杂花苜蓿干草产量,过磷酸钙与硫酸钾配合施用干草产量最高为15 860.80 kg/hm2,高于对照36.81%;同时也提高了苜蓿粗蛋白含量,改善了苜蓿品质。尿素,过磷酸钙及硫酸钾配合施用时,前两茬草粗蛋白含量分别为19.12%和19.90%,高于对照的17.4%和12.8%;提高了苜蓿种植的经济效益,尿素与过磷酸钙配合施用时效果最好,净增1 826.55元/hm2。

Effects of combined fertilization on the yield and quality of Medicago varia cv. Xin mu No. 1

The experiment was carried out in Yushugou Seed Production Base of Thanshan Changji Biological Engineering Company,its′ soil was poor and salinealkali content was higher.The results showed that combined fertilization could elevate hay yield of Medicago varia cv.Xinmu No.1.The highest hay yield(15860.80(kg/ hm~(2)))was gained when fertilizing Ca(H_2PO_4)_2 and K_2SO_4,higher 36.81% than CK.Meanwhile,crude protein content and quality of hay were also improved.When fertilizing urea,Ca(H_2PO_4)_2 and K_2SO_4,crude protein content of the first two cuts were 19.12% and 19.90%,which were increased by 17.4% and 12.8% when compared with CK.Economic benefit was also elevated,and among which,combination of urea and Ca(H_2PO_4)_2 was the best,its′ net benefit was 1826.55 yuan/hm~2.