长期定位施肥对保护地黄瓜产量及磷、钾养分吸收的影响

Effect of Long-term Fertilization on Yields and Absorption of Phosphorus and Potassium of Cucumber in Vegetable Soils in Greenhouse

以沈阳农业大学蔬菜保护地长期定位试验为基础,通过田间试验、化验分析相结合的方法,系统的研究了长期定位条件下,不同施肥处理对保护地黄瓜产量及其吸收养分的影响。结果表明:BNK(1000.00 g.株-1)和ANPK(982.78 g.株-1),APK(876.11 g.株-1)和BN1(792.22 g.株-1),BNP(758.33 g.株-1)和AP(758.33 g.株-1),AK(657.22 g.株-1)和AN0(626.11 g.株-1),BP(327.78 g.株-1)和BK(313.89 g.株-1)、BN0(297.22 g.株-1)之间差异不显著,说明化学氮肥和有机肥在增产效应上作用相当;ANK(1188.89 g.株-1)、BNK(1000.00g.株-1)处理的产量较高,并与其它处理差异极显著;表明钾肥及氮钾肥配施都能够起到明显的增产效应。黄瓜植株从土壤中吸收磷素、钾素养分的量主要受土壤中磷素、钾素释放量的影响。

Through long-term experiment in vegetable greenhouse of Shenyang Agriculture University and through the cooperation of field experimen and the chemical analysis, it was conducted to study the effects of different fertilization on the contents of phosphorus and potassium. The results were summarized as follows, the differentiation of BNK（1 000. 00 g·plant^-1） and ANPK （982. 78 ·plant^-1）, APK （876. 11 g·plant^-1） and BN1 （792. 22 g·plant^-1）, BNP （758.33 g·plant^-1） and AP（758. 33 g·plant^-1）,AK（657. 22 g·plant^-1） and AN0（626. 11 g·plant^-1）,BP （327.78 g·plant^-1） and BK（313.89 g·plant^-1）,BN0（297. 22 g ·plant^-1）was indistinctively. That direct Nitrogen fertilizer and organic fertilizer had the same effect on increasing soil productivity. The yields of ANK（1 188. 89 g ·plant^-1 ）and BNK（1 000. 00 g·plant^-1） was higher and the differentiation with others was very distinctively. This conduct that the applying of K or N-K fertilizer considerably increased the productivity. The contents of phosphorus and potassium absorbed by cucumber were closely related with and were significantly linearly correlated to the releasing contents of phosphorus and potassium.