不同钾肥品种和用量对甘蓝产量、品质和养分吸收利用的影响

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摘要

以俄罗斯产KCl和K₂SO₄、新疆罗布泊产K₂SO₄、开封产K₂SO₄为试材，比较了不同钾肥品种和罗布泊产K₂SO₄不同用量在

热带和墨玉两个甘蓝品种上的应用效果。结果表明:施用钾肥可以增加甘蓝产量、蛋白质及VC含量,降低硝酸盐含量。在钾肥

用量为300 kg·hm^-2时,罗布泊产K₂SO₄的施用效果好于或接近其他钾肥品种,俄罗斯产K₂SO₄和开封产K₂SO₄施用效果最差。随

着施钾量的增加，蛋白质含量变化不显著，VC含量增加，硝酸盐含量下降。施钾后热带产值提高29.9 %~33.2 %,墨玉产量提

高15.8 %~20.5 %。利用回归方程求得热带的经济最佳钾肥用量为354.0 kg·hm^-2,最高产值为98 463.4元·hm^-2;墨玉经济最

佳钾肥用量为333.0 kg·hm^-2,最高产值为98 201.2元·hm^-2。

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	王桂良
	黄玉芳
	叶优良*

关键词 ：钾肥, 甘蓝, 产量, VC, 硝酸盐, 经济效益

Abstract：

Taking KCI and K₂SO₄ produced in Russia,Luobupu K₂SO₄produced in Xinjiang and K₂SO₄ produced in

Kaifeng as experimental materials,the experiment was carried out to study the effects of different K sources

and applying dosage on cabbage varieties of‘Redai’and‘Moyu’.The results showed:potassium application

could increase cabbage yield，the content of protein and VC,decrease the content of nitrate.When the amount

of K application was 300 kg·hm^-2,the effects of Luobupu K₂SO₄ was better than or close to the other K

sources.K₂SO₄ produced in Russia and K₂SO₄ produced in Kaifeng had the worst effect.Potassium application

increased‘Redai’output value by 29.9 %-33.2 %,and that of‘Moyu’by 15.8 %-20.5 %.Utilizing return

equation,it gained the best economical potassium application for‘Redai’was 354.0 kg·hm^-2,the highest

output value was 98 463.4 Yuan·hm^-2;that for‘Moyu’was 333.0 kg·hm^-2 and the highest output value was 98

201.2 Yuan·hm^-2.

收稿日期: 2008-12-12

PACS:

S635

引用本文:

王桂良;黄玉芳;叶优良*. 不同钾肥品种和用量对甘蓝产量、品质和养分吸收利用的影响[J]. 中国蔬菜, 2009, 1(20): 40-45. WANG Gui-liang;HUANG Yu-fang;YE You-liang*. Effects of Different K Source and Applying Dosage on Yield，Quality and Nutrient Absorption on Cabbage. , 2009, 1(20): 40-45.

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http://www.cnveg.org/CN/ 或 http://www.cnveg.org/CN/Y2009/V1/I20/40