江汉平原灰潮土几种旱作物锰肥效应研究

STUDIES ON THE EFFECTS OF APPLYING MANGANESE FERTILIZER TO SEVERAL DRY LAND CROPS CULTIVATED ON GREY FLUVO AQUIC SOIL IN JIANGHAN PLAIN

用江汉平原灰潮土进行小麦、油菜、蚕豆和棉花锰肥盆栽和田间试验。结果表明：①这４ 种作物施用锰肥增产效果显著。②不同用量的硫酸锰作基肥施在小麦、油菜和蚕豆上，其肥料效应函数相似，不同的是蚕豆需要的锰肥用量略高。③用０ ．１％ 的硫酸锰溶液浸种或移栽时浸根加生殖生长期喷施增产效果好。④用硫酸锰拌种，对棉花的增产效果比作基肥的好，两者差异极显著；对小麦和蚕豆的增产效果略优于作基肥的增产效果；对油菜则相反，作基肥比拌种产量高且差异达到极显著水平。

Under pot culture and field test, wheat,rape,broad bean and cotton were cultivated with manganese fertilizer treatment on grey fluvo aquic soil in Jianghan Plain.The results showed:(1)The yields of the four plants were significantly increased with applying manganese fertilizer to them. (2)For wheat, rape and broad bean applyed spreading with different quantities of MnSO 4 as base fertilizer,the effects of fertilizer were similar,but the quantity of manganese used to broad bean was higher than the others.(3)When the four crops were treated with seed soaking, foot soaking while being transplanted and sprayed in the procreation growth period with 0.1% MnSO 4 respectively,and the effects of yield increase were good.(4)The four crops were treated with seed dressing and applyed with MnSO 4 as base fertilizer. For cotton,the effect of yield of the former treatment was better than the latter and the difference between them was extremely remarkable. For wheat and broad bean,the former effect was a little better than the latter. As to rape,on the contrary,the yield increase of the latter treatment was higher than the former and the difference was extremely significant.