干旱区生态环境知识资源中心(Arid): 滴灌磷肥在灰漠土中运移的研究

Arid

	滴灌磷肥在灰漠土中运移的研究
其他题名	Phosphorus migration of monoammonium phosphate via drip-irrigation in gray desert soil
	杨国江; 彭懿; 尹飞虎; 石磊
来源期刊	中国土壤与肥料
ISSN	1673-6257
出版年	2020
期号	6
中文摘要	磷在土壤中的迁移是影响农业系统磷利用效率的关键因素之一。应用同位素~(32)P示踪和放射性同位素自显影技术,研究了滴施磷酸一铵在灰漠土中的运移。结果表明:与不施磷处理相比,滴施磷肥可以增加0 ~ 15 cm土层有效磷的含量。在0 ~ 20 cm土层均有不同比例~(32)P的分布,但大部分~(32)P仍集中分布在表层,0 ~ 10 cm土层中的~(32)P占总量的72.7% ~ 89.5%,最高可达99%。不同施肥时期磷的运移距离有很大差异,T3(0 ~ 20 cm)>T2(0 ~ 10 cm)>T1(0 ~ 5 cm),这可能是由于干湿交替导致土壤孔隙率变化,进而影响了磷的移动距离。平行于滴灌带方向上磷的运移距离比垂直于滴灌带方向更远。随着正磷酸盐浓度增加,磷的运移距离变大,滴施磷酸一铵处理~(32)P的移动距离达到对照的2倍。
英文摘要	The migration of phosphorus in soil is one of the key factors affecting the P use efficiency in agriculture system.Phosphorus distribution in gray desert soil from monoammonium phosphate(MAP)applied by drip-irrigation was studied by ~(32)P isotope tracing and autoradiography technique in greenhouse.Our results showed that compared with no phosphate treatment(CK),drip fertigation of phosphate fertilizer increased the Olsen P in the 0 ~ 15 cm layer.Different proportions of ~(32)P were found in every layers within 20 cm depth and 72.7% ~ 89.5% of the ~(32)P was retained in the 0 ~ 10 cm depths.The decreasing order of the migration distance of the P was T3(0 ~ 20 cm)>T2(0 ~ 10 cm)>T1(0 ~ 5 cm),which was mainly attributed to the dry and wet alternation and different soil porosity at different times.The migration of phosphorus,which was in parallel to the drip tape,was more active than that of vertical to the drip tape.The longer distance P migration was with higher P concentration in soil.The ~(32)P migration in treatments of MAP was twice than that of the CK treatment.
中文关键词	滴灌 ; 灰漠土 ; ~(32)P示踪 ; 磷素运移
英文关键词	drip fertigation gray desert soil ~(32)P isotope tracing phosphorus migration
类型	Article
语种	中文
收录类别	CSCD
WOS类目	Agriculture
CSCD记录号	CSCD:6875835
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/354118
作者单位	杨国江, 新疆农垦科学院农田水利与土壤肥料研究所, 石河子, 新疆 832000, 中国. 石磊, 新疆农垦科学院农田水利与土壤肥料研究所, 石河子, 新疆 832000, 中国. 彭懿, 中国农业大学资源与环境学院, 生物多样性与有机农业北京市重点实验室, 北京 100193, 中国. 尹飞虎, 新疆农垦科学院, 石河子, 新疆 832000, 中国.
推荐引用方式 GB/T 7714	杨国江,彭懿,尹飞虎,等. 滴灌磷肥在灰漠土中运移的研究[J],2020(6).
APA	杨国江,彭懿,尹飞虎,&石磊.(2020).滴灌磷肥在灰漠土中运移的研究.中国土壤与肥料(6).
MLA	杨国江,et al."滴灌磷肥在灰漠土中运移的研究".中国土壤与肥料 .6(2020).