旱作黄潮土中铁元素的有效性研究

通过对不同季节采集的不同质地类型土壤样品中有效铁、有机质和酸碱度的化验分析及对小麦、花生、黄瓜进行根外喷施 0 .5 %硫酸亚铁溶液对比研究 ,认为在旱作黄潮土中铁元素的有效性与土壤粘粒含量和有机质含量呈正相关 ,雨季土壤大于旱季土壤 ,而酸碱度的相关性不明显 ;花生、黄瓜对铁素营养的敏感性大于小麦。根外喷施铁肥应优先在质地较粗的旱季土壤和花生、黄瓜上应用

Study on the availability of iron element in the upland of yellow fluvo-aquic soil

Throungh to analyse Fe,pH and organic matter at different texture types of soil sample in different season and to contrast and study to spray 0.5% FeSO 4 to wheat,peanut and cucumber,this paper consider the correlation between the availability of Fe,the particle of clay and organic matter in soil was positive in the dry farming yellow moist soil.It is greater in rain season than in dry season.But it isn't obvious to the correlation of pH.It is more sensitive to the nutrition of Fe of peanut and cucumber than that of wheat.To spray fertilizer of Fe at first must be apply at soil that texture is lighter in dry season and at peanut and cucumber.