【摘要】 为探讨有机无机复混肥对旱藕生长发育及土壤理化性状的影响,本研究设置有机无机复混肥0、750、1500、2250、3000 kg/hm~2 5个施肥量,进行不同施肥量对土壤理化性状、旱藕农艺性状、产量及品质的影响研究。结果表明:随着有机无机复混肥施用量的增加,土壤孔隙度先增加后减少,土壤碱解氮、速效磷、速效钾及有机质含量逐渐增加;旱藕株高、茎径及分蘖数逐渐增加,但旱藕倒伏率也随之增加;旱藕成熟块茎可溶性糖、还原糖、可溶性蛋白质及淀粉含量逐渐增加;旱藕块茎产量先增加后减少,其中施肥量为2250 kg/hm~2的产量最高,比不施肥增产66.01%。综上表明,有机无机复混肥能有效改善土壤理化性状,提高旱藕块茎产量及品质,但施肥量过多会导致土壤板结及旱藕倒伏,块茎产量减少。本研究条件下,有机无机复混肥施肥量为2250 kg/hm~2的效果最好。更多还原

【Abstract】 In order to study the effect of organic-inorganic compound fertilizer on the growth of edible canna and the physical and chemical properties of soil, five fertilization amounts of organic-inorganic compound fertilizer(0, 750, 1500, 2250 and 3000 kg/hm~2) were set to study the effects of different fertilization amounts on the physical and chemical properties of soil, and agronomic properties, yield and quality of edible canna. The soil porosity first increased and then decreased, and the content of available nitrogen, available phosphorus, available potassium and organic gradually increased with the increase of fertilization amounts. The plant height, stem diameter and tiller number of edible canna increased with the increase of fertilization amounts, but the lodging rate also increased. With the increase of fertilization amounts, the content of soluble sugar, reducing sugar, soluble protein and starch in tubers increased. Besides, the yield of edible canna tuber increased first and then decreased, and the yield of 2250 kg/hm~2 was the highest, 66.01% higher than that of no fertilizer. In summary, organic-inorganic compound fertilizer can effectively improve the physical and chemical properties of soil, improve the yield and quality of edible canna tuber, but excessive fertilization will lead to soil hardening, edible canna lodging and tuber yield reduction. In this study, the organic-inorganic compound fertilizer with 2250 kg/hm~2 was the best.更多还原