Influence of Potassium Fertilization on Yieldand Quality{1mm of Foliar Vegetable Crops

Influence of Potassium Fertilization on Yieldand

Quality{1mm of Foliar Vegetable Crops

佚名

【期刊名称】《《土壤圈（英文版）》》 【年(卷),期】2001(011)001

【摘要】Over a period of two years, field experiments were conducted on foursilty loam soils grown with foliar vegetable crops including Chinesecabbage

({

Brassica

pekinensis

Rupr.,

cv.

Lu-Bai

3),

autumngreens (B. chinensis L., cv. Piao-Geng-Bai), winter greens(B. var. rosularis Tsen et Lee, cv. You-Dong-Er), and summergreens (B. chinensis L., cv. Zao-Shu 5), respectively. Eachexperiment included one CK treatment without K, N and P fertilizersapplied, and four treatments with from low to high doses, 0300kg hm-2 for Chinese cabbage, 0150 kg hm-2 forautumn and winter greens and 0180 kg hm-2 for summergreens, of K fertilizers in the form of sulfate of potash (SOP) appliedtogether with N and P fertilizers. One treatment of K fertilizer in theform of muriate of potash (MOP) applied at high levels (150 or 180 kghm-2) together with N and P fertilizers was included in theexperiments of autumn, winter and summer greens, respectively, in orderto compare the effects of SOP and MOP. The market yields of the testedcrops increased significantly with the increasing rate of Kapplication. The crops supplied with K fertilizers yielded more stablyas