论文部分内容阅读
黄瓜的整个生育期所需用的氮肥比其它蔬菜所需的氮肥都高,通过我们的试验,大棚黄瓜化肥底施效果较好,一般增加产量20％左右。一、化肥底施,当幼苗新根一出便可直接吸收养分,使供肥时间提早,促使幼苗生长快,苗壮,增加叶面积,促进早熟,提高前期产量。二、化肥利用率高,肥效长。底施化肥,化肥不易挥发,利用率可由原来的30％提高到50％,并能延长化肥肥效。
The cucumber required for the whole growth period of nitrogen fertilizer than other vegetables required for nitrogen are high, through our experiments, greenhouse cucumber fertilizer at the end of better facilities, generally increase the yield of about 20%. First, the chemical fertilizer facilities, when a new seedling roots can be a direct absorption of nutrients, so that fertilizer ahead of time, prompting seedlings grow fast, strong, increase leaf area, promote early maturity and improve pre-production. Second, high fertilizer efficiency, fertilizer efficiency. At the end of fertilizers, chemical fertilizers are not volatile, the utilization rate from the original 30% to 50%, and to extend fertilizer efficiency.