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以芸豆为试材,开展田间小区试验,研究冷凉气候条件下新型缓释肥与普通氮肥用量对芸豆(Phaseolus vulgaris L.)产量和早、中、后生育期品质的影响。结果表明:与当地习惯施肥相比,150、240kg/hm2缓释肥(纯氮,下同)和450kg/hm2普通尿素处理芸豆产量分别增加10.42%、8.57%、14.11%,三者之间差异不显著。随生育时期的延长,芸豆品质指标变化规律不同,所有处理下硝酸盐含量呈显著性增加,后期与早期相比,150、240kg/hm2缓释肥和450kg/hm2普通尿素处理增幅较大,三者之间差异不显著;维生素C含量呈显著增加趋势,总体来看,150kg/hm2缓释肥、450kg/hm2普通尿素处理相对较高,二者之间差异不显著;可溶性糖呈显著性下降,总体来看,150、240kg/hm2缓释肥和450kg/hm2普通尿素处理相对较高,三者之间差异不显著;蛋白质含量呈中期显著性增加后期下降,中后期不同处理之间都没有显著差异。以上结果说明,当地气候和生产条件下,低量缓释肥施用具有较好效果,减少投入的同时,能够保持蔬菜产量和品质的稳定。
Taking kidney bean as test material, field experiment was carried out to study the effects of new slow-release fertilizer and common nitrogen fertilizer on the yield and early, middle and late growth stages of kidney bean (Phaseolus vulgaris L.) in cool climate. The results showed that the yield of kidney bean increased by 10.42%, 8.57% and 14.11% respectively when compared with the conventional fertilization, with the addition of 150,240 kg / hm2 slow release fertilizer (pure nitrogen, the same below) and 450 kg / hm2 ordinary urea Not obvious. With the extension of growth period, the quality of kidney beans varied with different rules, the nitrate content increased significantly under all treatments. Compared with the early stage, the treatment of 150,240kg / hm2 slow-release fertilizer and 450kg / hm2 ordinary urea increased greatly. There was no significant difference between the two groups. The content of vitamin C showed a significant increase trend. Generally speaking, 150kg / hm2 slow-release fertilizer and 450kg / hm2 ordinary urea were relatively high, with no significant difference between them; soluble sugar decreased significantly In general, 150,240 kg / hm2 slow-release fertilizer and 450 kg / hm2 ordinary urea were relatively high, with no significant difference among the three. The protein content showed a significant increase in the mid-term and then decreased in the late stage. Significant differences. The above results show that the local climate and production conditions, slow release fertilizer application has a good effect, reduce input, while maintaining vegetable yield and quality stability.