Zinc fertilization in rice-wheat cropping system under upland calcareous soil

被引：4
|
作者：
Laik, Ranjan [1 ]
Singh, Santosh Kumar [1 ]
Kumar, Vipin [1 ]
Singh, S. P. [1 ]
Shukla, Arvind [2 ]
Nidhi [3 ]
Yadav, R. C. [1 ]
机构：
[1] Dr Rajendra Prasad Cent Agr Univ, Dept Soil Sci, Samastipur 848125, Bihar, India
[2] Indian Inst Soil Sci, Div PCM, Bhopal, India
[3] Dr Rajendra Prasad Cent Agr Univ, Dept SMCA, Samastipur, Bihar, India
来源：
JOURNAL OF PLANT NUTRITION | 2019年 / 42卷 / 03期
关键词：
Zn fertilization; rice-wheat rotation; Zn concentration; Zn fractions; DTPA-Zn; ORGANIC-MATTER; HEAVY-METALS; FRACTIONATION; GRAINS; ACID; PH;
D O I：
10.1080/01904167.2018.1482916
中图分类号：
Q94 [植物学];
学科分类号：
071001 ;
摘要：
Zinc (Zn) fertilization is important for Zn crop biofortification as well as increasing yields, thus proper Zn recommendations for soil application is needed for Zn deficient soils. The effectiveness of Zn applications was evaluated in different combinations of rates (2.5, 5.0, 7.5, and 10.0 kg ha(-1) per year) and frequencies (initial, alternate, and every year) in rice (Oriza sativa L.) - wheat (Triticum aestivum L.) cropping system in a Zn-deficient upland calcareous soil in the fourth year. Zn applications to rice at 7.5 and 10 kg ha(-1) of alternate year and 5.0 to 10 kg ha(-1) of every year had the highest rice equivalent yield as compared to no-Zn treatment. Hence, Zn application to rice at 7.5 kg ha(-1) at alternate years is the lowest rate at which highest rice equivalent yield of rice-wheat cropping system can be obtained.
引用
收藏
页码：296 / 306
页数：11
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