• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Horticultura Brasileira >Nitrogen applied in okra under non-tightness grown and residual fertilization
【24h】

Nitrogen applied in okra under non-tightness grown and residual fertilization

机译：非密实性和残留施肥条件下在秋葵中施用氮

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

摘要

The aim of this study was to evaluate, in the Amazonian rainy season, the effect of nitrogen applied in okra under non-tightness grown and residual fertilization. The trial was carried out in the Embrapa Amazonia Ocidental, in Iranduba, Amazonas state, Brazil, between October/2010 and February/2011, in dystrophic Yellow Argisoil, medium texture, using pits with residual fertility. The experimental design was of randomized blocks with four repetitions (two lines with four plants, spacing of 1.5x1.0 m) and four main treatments (urea: 0.0; 20.0; 40.0 and 60.0 g plant-1 corresponding to 0.0; 60.0; 120.0 and 180.0 kg ha-1 of N, respectively, in two portions) using cv Dardo. Besides two additional treatments: chicken manure (1.0 L pit-1, with the cv Dardo) and cv Santa Cruz-47 (with urea rate of 40.0 g plant-1). Micronutrients in pits and dripping system irrigation were applied. All the studied traits had significant quadratic response with the increase of the urea rates. The highest estimated value for the plant height (39.7 cm), canopy diameter (86.2 cm), fruit number (36.0 un plant-1), fruit average mass (17.3 g), harvest number within production cycle (26.4 un cycle-1) and of the yield (4051 kg ha-1) were observed with (g plant-1 of urea): 48.3; 43.5; 38.5; 49.7; 32.7; and 40.5, respectively. Those original traits contributed reasonably poised for plant overall performance (PC1), but subordinate there was antagonism between harvest number and fruit number versus fruit average mass and canopy diameter (PC2). The chicken manure showed positive response compared to the control treatment, but didn't differ from urea rates for all these characteristics. When compared to cv Dardo, the cv Santa Cruz-47 only presented higher values to canopy diameter and number of harvests. The economical efficiency maximum dose was 40.2 g plant-1 of urea (120.6 kg ha-1 of N), with net income per hectare equal to 2.09 tons of okra fruits.
机译：这项研究的目的是评估在亚马逊雨季，在不致密生长和残留施肥的情况下，秋葵中施用氮的影响。该试验是在2010年10月/ 2011年2月/ 2011年2月在巴西亚马孙州伊兰杜巴的西非Embrapa亚马孙河地区，以营养不良的黄色Argisoil进行的，土壤质地中等，并带有残留肥力的小坑。实验设计是随机分组，重复四次（两行四株植物，间距为1.5x1.0 m），并进行四种主要处理（尿素：0.0; 20.0; 40.0和60.0 g植物-1，对应于0.0; 60.0; 120.0）使用cv Dardo分两部分分别测定18千克ha-1和180.0 kg ha-1的氮。除了另外两种处理方法：鸡粪（1.0 L pit-1，cv Dardo）和cv Santa Cruz-47（尿素含量为40.0 g plant-1）。施用矿坑中的微量元素和滴灌系统。随着尿素含量的增加，所有研究的性状均表现出明显的二次响应。植株高（39.7 cm），冠层直径（86.2 cm），果实数（36.0 un plant-1），果实平均质量（17.3 g），生产周期内的收获数量（26.4 un cycle-1）的最高估计值观察到的产量（4051 kg ha-1）与（g plant-1尿素）：48.3; 43.5; 38.5; 49.7; 32.7;和40.5。这些原始性状为植物的整体性能（PC1）做出了合理的贡献，但从属数量与果实平均质量和冠层直径（PC2）之间却存在拮抗作用。与对照相比，鸡粪表现出了积极的反应，但就所有这些特征而言，尿素的使用率没有变化。与cv Dardo相比，cv Santa Cruz-47仅对冠层直径和收成数量显示出更高的价值。经济有效的最大剂量为40.2克尿素（10.6公斤ha-1的氮），每公顷纯收入等于2.09吨黄秋葵果实。

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