两个春季油菜品种植株密度与产量的关系

IF 1.7 4区农林科学 Q2 AGRONOMY

Acta Agriculturae Scandinavica Section B-Soil and Plant Science Pub Date : 1999-09-01 DOI:10.1080/09064719909362508

M. Al-barzinjy, O. Stølen, J. Christiansen, J. E. Jensen

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引用次数: 29

摘要

研究了2个春季油菜品种在5种不同种植密度下的产量/密度关系。密度从20到130株m−2不等。采用不同的回归模型研究了单株荚果数、单株种子重和单株干物质3个响应变量与密度的关系。使用变换来改善模型的拟合。单株荚果数、种子重和单株干物质随密度的增加而降低。两个品种的种子重和干物质m - 2对不同植株密度的响应相似。对于所有响应变量，逆指数模型对数据拟合最佳，表明存在最佳密度，该密度约为官方推荐播种密度的一半。

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Relationship between plant density and yield for two spring cultivars of oilseed rape (brassica napus l.)

Yield/density relationships of two spring cultivars of oilseed rape were investigated under five different plant densities. Densities ranged from 20 to 130 plants m−2. Three response variables, number of pods per plant, seed weight per plant and dry matter per plant, were studied using different regression models to examine their relationship with density. Transformations were used to improve the fit of the models. Pods per plant, seed weight and dry matter per plant decreased as plant density increased. Seed weight and dry matter m−2 responded similarly to varying plant density for the two cultivars. For all response variables, the inverse exponential model gave the best fit to the data, indicating the existence of an optimum density, which was about half the official recommended sowing density.

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来源期刊

Acta Agriculturae Scandinavica Section B-Soil and Plant Science 农林科学-农艺学

CiteScore

4.40

自引率

0.00%

发文量

审稿时长

2.3 months

期刊介绍： Acta Agriculturæ Scandinavica Section B publishes original research in applied soil and plant science with special attention given to to crop production in agri- and horticultural systems. We welcome manuscripts dealing with: Climate smart and sustainable crop production systems Water and nutrient efficiency Soil conservation and productivity Precise agriculture systems Applications of bio- and nanotechnology Digitalisation and robotics Soil-plant interactions Acta Agriculturæ Scandinavica, Section B – Soil & Plant Science forms part of a series of titles published on behalf of the Nordic Association of Agricultural Science (NJF). The series also includes Section A - Animal Science .