| Abstract: In order to study the optimal dosage of earthworm manure in tomato production, the tomato 'Xiweimei 191' was used as the test material, and a completely random design was adopted to compare the effects of different dosage of earthworm manure, different dosage of cow dung and commercial organic fertilizer on tomato growth, yield, quality, and so on. The results showed that the soil alkalinity increased but the soil salt damage reduced by application of earthworm manure. The soil salt content increased by application of cow dung, and soil organic matter content increased with the increasing of cow dung application amount. The application of cow dung before transplanting was beneficial to the nutrients' supply of crop, and earthworm manure released effective nutrients in the soil faster and more than ordinary organic manure before transplanting. Adding organic fertilizers before transplanting was beneficial to the rapid growth of tomato, the growth, yield and quality of tomatoes in treatments of T3 (with earthworm manure 2 t per 667 m2 ), T4 (with earthworm manure 3 t per 667 m2
), T6 (with cow dung 2 t per 667 m2
), T7 (with cow dung 3 t per 667 m2
) were higher than
other treatments. In particular, the yield, soluble protein content, soluble solid content and sugar-acid ratio of
tomato in T3 treatment (with earthworm manure 2 t per 667 m2
) were the highest, which increased by 39.82%, 1.2
percentage points, 0.2 percentage points and 26.43% compared with the control, respectively. And the total acid
content was the lowest, which decreased by 19.37% compared with the control, and the fruit quality was the best. |