Effect of low input of organic matter and fertilizer on yield of soft leaf vegetables and accumulation of soil nutrients in greenhouse field

application rates chrysanthemum coronarium crecimiento croissance crop yield cultivos de invernadero dose d'application engrais organique fertilidad del suelo greenhouse crops greenhouse soils growth hortalizas de hoja leaf vegetables nitrate nitrates nitratos organic fertilizers plante de serre rendement des cultures rendimiento de cultivos soil fertility sol de serre suelo de invernaderos