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以玉溪市当地洋葱品种为试材,采用不同施肥方法处理获得不同质量的洋葱幼苗,研究幼苗质量对洋葱植株生长发育及产量和品质的影响。结果表明,不同等级的苗定植后,对植株株高、商品率、最大横径、茎粗、未熟抽薹率、分球率、产量、叶片数差异并不显著。但洋葱株高、未熟抽薹率和产量随分类等级的升高而增加,叶片数、茎粗和分球率呈现先增加后减小的变化规律,最大横径和商品率则与叶片数等性状相反;产量随壮苗指数的增加而增加,壮苗指数的数值每增加0.001 g,洋葱亩产将增加217.23 kg。为此,玉溪市洋葱生产应采取适当稀植,强化水肥管理、增加光照和气温等技术措施,提高壮苗指数,形成高产。
Using local onion varieties of Yuxi City as test materials, different quality of onion seedlings were treated with different fertilizers to study the effects of seedling quality on onion plant growth, yield and quality. The results showed that the plant height, product rate, maximum diameter, stem diameter, immature bolting rate, percentage of shots, yield, number of leaves were not significantly different after different levels of seedlings were planted. However, the plant height, immature bolting rate and yield of onion increased with the increase of the classification level, the number of leaves, stem diameter and percentage of ball increased first and then decreased, the maximum diameter and product rate were related with the number of leaves On the contrary, the yield increased with the increase of strong seedling index, and for every increase of 0.001 g seedling index, onion per mu would increase by 217.23 kg. To this end, Yuxi City, onion production should take appropriate sparse planting, strengthen water and fertilizer management, increase light and temperature and other technical measures to improve strong seedling index, the formation of high yield.