RESPONSE OF WEEDS TO APPLICATION OF NITROGEN, PHOSPHORUS AND POTASSIUM ON LOW-FERTILITY ACID SOILS IN SURINAM

被引：8

作者：

EVERAARTS, AP

机构：

[1] AGR UNIV WAGENINGEN, DEPT TROP CROPS SCI, 6708 PD WAGENINGEN, NETHERLANDS

[2] AGR UNIV WAGENINGEN, DEPT VEGETAT SCI PLANT ECOL & WEED SCI, 6708 PD WAGENINGEN, NETHERLANDS

来源：

WEED RESEARCH | 1992年 / 32卷 / 05期

关键词：

D O I：

10.1111/j.1365-3180.1992.tb01899.x

中图分类号：

S3 [农学（农艺学）];

学科分类号：

0901 ;

摘要：

The effect of nitrogen, phosphorus and potassium on the growth of weeds was studied at two locations on low-fertility acid soils in Suriname. Nitrogen stimulated the growth of weeds in terms of ground-cover and weight on a loamy sand of comparatively low fertility, as well as on a sandy loam of higher fertility. Phosphorus ultimately only stimulated ground-cover development and growth on the sandy loam, and interacted positively with nitrogen on that soil. Potassium had no effect on weed weight, but at both locations the number of plants increased with application of K. Differences in the amount of weed growth between the two locations were related to differences in the composition of the weed flora. On the sandy loam with application of 50 kg N, 50 kg P and 40 kg K ha-1, nutrient uptake by the weeds was 72 kg N, 10 kg P and 121 kg K ha- over a period of 35 days.

引用

页码：385 / 390

页数：6

共 21 条

[11]

EVERAARTS AP, 1992, NETH J AGR SCI, V40, P73

[12]

EVERAARTS AP, 1991, THESIS AGR U WAGENIN

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