...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Journal of Agricultural Science >Phosphorus Availability for Irrigated Rice Cultivated Under No-Tillage and Different Phosphate Sources
【24h】

Phosphorus Availability for Irrigated Rice Cultivated Under No-Tillage and Different Phosphate Sources

机译：免耕和不同磷源下灌溉水稻的磷有效性

获取原文
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

The objective of this work was to evaluate the response of irrigated rice to phosphate fertilization using triple superphosphate (TSP) and Arad phosphate rock (APR), and the phosphate residual effects of upland crops in no-tillage system on the following rice crop. Also, it aimed to evaluate the efficiency of Mehlich-1 and anion exchange resin as soil P extractors. Two experiments were conducted in Albaqualf soil under irrigated conditions in the southern region of Rio Grande do Sul State. The experiments were designed as random blocks with four replications and the treatments were displayed as a 2 × 2 factorial (TSP and APR, with and without annual P application as TSP). No yield responses to phosphate were observed. Phosphate fertilization performed on upland crops (maize and soybeans) presented a residual effect on the rice crop even after four years of consecutive cropping under no-tillage. The extractors Mehlich-1 and AER were equally efficient in the evaluation of P availability for the rice crop. P content values obtained by both methods did show a significant correlation with accumulated plant P. The APR presents a similar performance as the TSP in regard to phosphate nutrition in irrigated rice when rotated with upland crops under no-tillage system.
机译：这项工作的目的是评估灌溉稻对使用三重过磷酸钙（TSP）和阿拉德磷酸盐岩（APR）的磷酸盐施肥的响应，以及免耕系统下旱地作物对后续稻米作物的磷酸盐残留效应。此外，它的目的是评估Mehlich-1和阴离子交换树脂作为土壤P提取剂的效率。在南里奥格兰德州南部地区，在灌溉条件下的Albaqualf土壤中进行了两个实验。实验被设计为具有四次重复的随机区组，并且处理被显示为2×2阶乘（TSP和APR，有和没有每年P施用为TSP）。没有观察到对磷酸盐的产量响应。即使在连续四年免耕种植的情况下，对旱地作物（玉米和大豆）进行的磷酸盐施肥对水稻作物也有残留影响。 Mehlich-1和AER提取器在评估水稻中磷的有效性方面同样有效。通过两种方法获得的P含量值均与累积的植物P值显示出显着的相关性。当在免耕体系下与旱地作物轮作时，APR在灌溉水稻的磷酸盐营养方面表现出与TSP相似的性能。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号