Response of Tomato on Calcareous Soils to Different Seedbed Phosphorus Application Rates

ZHANG Xiao-Sheng; LIAO Hong; CHEN Qing; P. CHRISTIE; LI Xiao-Lin; ZHANG Fu-Suo

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Response of Tomato on Calcareous Soils to Different Seedbed Phosphorus Application Rates

机译：石灰性土壤上番茄对不同苗床磷施用量的响应

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Field experiments were conducted with five rates (0, 75, 150, 225, and 450 kg P2O5 ha-1) of seedbed P fertilizer application to investigate the yield of tomato in response to fertilizer P rate on calcareous soils with widely different levels of Olsen P (13-142 mg kg-1) at 15 sites in some suburban counties of Beijing in 1999. Under the condition of no P fertilizer application, tomato yield generally increased with an increase in soil test P levels, and the agronomic level for soil testing P measured with Olsen method was 50 or 82 mg kg-1 soil to achieve 85% or 95% of maximum tomato yield, respectively. With regard to marketable yield, in the fields where Olsen-P levels were ＜ 50 mg kg-1, noticeable responses to applied P were observed. On the basis of a linear plateau regression, the optimum seedbed P application rate in the P-insufficient fields was 125 kg P2O5 ha-1 or about 1.5-2 times the P removal from harvested tomato plants. In contrast, in fields with moderate (50 ＜ Olsen P ＜ 90 mg kg-1) or high (Olsen P ＞ 90 mg kg-1) available P, there was no marked effect on tomato fruit yield. Field survey data indicated that in most fields with conventional P management, a P surplus typically occurred. Thus, once the soil test P level reached the optimum for crop yield, it was recommended that P fertilizer application be restricted or eliminated to minimize negative environmental effects.

机译：在5种不同的苗床施用磷肥（0、75、150、225和450 kg P2O5 ha-1）下进行了田间试验，研究了在Olsen水平差异很大的石灰性土壤上，番茄对磷肥的响应对产量的影响1999年在北京一些郊区县的15个地点施用的磷（13-142 mg kg-1）。在不施用磷肥的条件下，番茄的产量通常随土壤试验磷水平和土壤农艺水平的提高而增加。用Olsen方法测得的试验P为50或82 mg kg-1土壤，分别达到最大番茄产量的85％或95％。关于可销售的产量，在Olsen-P水平<50 mg kg-1的田地中，观察到对施用的P有明显的反应。根据线性高原回归分析，在缺磷的田间，最佳苗床施磷量为125 kg P2O5 ha-1或从收获的番茄植物中除磷的约1.5-2倍。相反，在中等（50 ＜Olsen P ＜90 mg kg-1）或高（Olsen P＞ 90 mg kg-1）的田间，对番茄果实产量没有显着影响。现场调查数据表明，在大多数采用常规磷管理的油田中，通常会发生磷过剩。因此，一旦土壤测试中的磷水平达到了农作物的最佳产量，建议限制或取消磷肥的施用，以最大程度地减少对环境的不利影响。

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来源
《土壤圈（英文版）》 |2007年第1期|70-76|共7页
作者
ZHANG Xiao-Sheng; LIAO Hong; CHEN Qing; P. CHRISTIE; LI Xiao-Lin; ZHANG Fu-Suo;
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作者单位

College of Resources and Environmental Sciences, China Agricultural University, Beijing 100094 (China);

Soil and Ferzilizer Extension Center, Beijing Agricultural Bureau, Beijing 100026 (China);

College of Resources and Environmental Sciences, China Agricultural University, Beijing 100094 (China);

College of Resources and Environmental Sciences, China Agricultural University, Beijing 100094 (China);

Agricultural and Environmental Science Department, The Queen's University of Belfast, Belfast BT9 5PX (UK);

College of Resources and Environmental Sciences, China Agricultural University, Beijing 100094 (China);

College of Resources and Environmental Sciences, China Agricultural University, Beijing 100094 (China);

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收录信息中国科学引文数据库(CSCD);中国科技论文与引文数据库(CSTPCD);
原文格式 PDF
正文语种 chi
中图分类农业基础科学;
关键词
calcareous soils; fertilizer P rate; soil test P; tomato yield; vegetable fields;

机译：石灰性土壤;肥料P速率;土壤试验P;番茄产量;蔬菜田;

Response of Tomato on Calcareous Soils to Different Seedbed Phosphorus Application Rates

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