Abstract:

To improve the production benefit of shallot onion (Allium ascalonicum L．), and solve the problem of soil continuous cropping obstacle caused by it. An organic fertilizer, which was made of fermentation products from straw mushroom residue and soil modifier, was used in both plot and field trials. The results showed that the organic fertilizer improved the plant height and the leaf length, increased the diameter and the length of bulb and promoted the tillering of shallot onion, and raised the weight of single plant and all parts of organs as well as yield, especially at the early stage, which was increased by 61.6%-72.5%. The difference between plots was extremely significant. The organic fertilizer stabilized or activated nutrients in soil, and also enhanced the amount of exchangeable Ca and Mg in the soil, and neutralized soil acidity, but reduced soil EC value, and finally achieved the effects of balanced soil nutrients, improved physiochemical properties of soil. The results pointed out that, however, too much phosphorous and potassium fertilizer but few magnesium fertilizer were applied by farmers. This experiment provides reasonable and effective technological measures for the integrative use of straw mushroom residue and increasing soil conservation capacity of agro-ecology in suburb areas, production benefit of shallot onion.