...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Australian Journal of Crop Science >Differential capacity of wheat, lupin and subterranean clover to acquire P from different sources
【24h】

Differential capacity of wheat, lupin and subterranean clover to acquire P from different sources

机译：小麦，羽扇豆和地下三叶草从不同来源获取磷的差异能力

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

摘要

Most soils in Western Australia are P deficient, whereas water-soluble P fertilizers are expensive and have only about 10% efficiency. A low-cost alternative is phosphate rocks that can mitigate P deficiency. A pot experiment was conducted to evaluate the effectiveness of three plant species; white lupin, wheat and sub clover grown in a mildly acidic soil to acquire P from different phosphorus sources (rock phosphate, composted rock phosphate and potassium phosphate) and a control treatment (without P). The experimental study was set up as a completely randomized block design arranged with three replications in a factorial arrangements. Three P sources [potassium phosphate (KP), rock phosphate=RP and composted rock phosphate (ERAPHOS) =ER] at 60 mg P/kg soil + control (no P application). The three plant species were white lupin (Lupinus albus cv. Kiev), wheat (Triticum aestivum cv. Wyalkatchem) and sub clover (Trifolium subterranean L. cv. Dalkeith) + control (without plant). shoot and root dry matter of three species were the highest when P was supplied as potassium phosphate, while there was no significant differences between two other rock phosphate in associate with dry matter accumulation. Wheat had the highest root and shoot dry matter amongst crop species. Sub clover and wheat had a higher root/shoot biomass ratio than lupin. This indicates that sub clover and wheat have the morphological advantage of an extensive root system which can explore a larger volume of soil to access relatively immobile nutrients like P. Potassium phosphate treatment produced plants with the highest shoot micro- and macronutrient accumulation, except Ca element. Results also showed that composted rock phosphate does not offer significant value over standard rock phosphate and soluble chemical fertilizers like potassium phosphate.
机译：西澳大利亚州的大多数土壤缺磷，而水溶性磷肥价格昂贵，且效率仅约10％。一种低成本的替代品是可以减轻磷缺乏的磷酸盐岩。进行了盆栽试验，以评估三种植物的有效性。在中等酸性土壤中生长的白羽扇豆，小麦和三叶草，可从不同的磷源（磷矿石，磷肥堆肥和磷酸钾）中获取磷，并进行对照处理（不含磷）。实验研究被设置为一个完全随机的区组设计，在因子排列中安排了三个重复。以60 mg P / kg土壤+对照（无磷施用）的三种P来源[磷酸钾（KP），磷酸岩= RP和堆肥磷酸岩（ERAPHOS）= ER]。这三种植物是白羽扇豆（羽扇豆（Lupinus albus），基辅），小麦（小麦（Triticum aestivum），Wyalkatchem）和三叶草（Trifolium subterranean L.cv.Dalkeith）+对照（无植物）。当磷以磷酸钾供给时，三个物种的枝干和根部干物质最高，而其他两种磷酸岩与干物质积累没有显着差异。在作物品种中，小麦的根和茎干物质最高。三叶草和小麦的根/茎生物量比比羽扇豆高。这表明三叶草和小麦具有广泛的根系形态优势，可以探索更大的土壤以获取相对固定的养分，例如磷。磷酸钾处理的植株除钙元素外，还具有最高的微量和大量养分积累。结果还表明，堆肥磷酸岩的价值不超过标准磷酸岩和可溶性化学肥料（如磷酸钾）。

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