Carrots are widely grown in the Luzhou region, making it essential to explore non-polluting fertilizer formulas that enhance carrot quality. By combining inorganic and organic fertilizers, implementing balanced nutrient application, and using biological fertilizers, farmers can reduce chemical fertilizer use, improve nutrient efficiency, and ultimately boost carrot quality. To this end, we conducted a series of field experiments to evaluate different fertilizer combinations.
The experiment was carried out in Shangheya Village, Nanchentun Township, Ganzhou City, Gansu District. The soil type is cinnamon soil, with moderate fertility. The area is flat, well-irrigated, and has suitable climate conditions for carrot growth. Soil analysis showed: 15.7 g/kg of organic matter, 1.11 g/kg of total nitrogen, 79 mg/kg of available nitrogen, 1.59 g/kg of total phosphorus, 22.9 g/kg of total potassium, and 290 mg/kg of available potassium.
The test crop was Japanese five-inch carrots from Takasaki Kuroda. Fertilizers used included both organic and inorganic types. Organic options were conventional organic fertilizer and biogas residue-based organic fertilizer. Inorganic fertilizers included DAP (diammonium phosphate), urea, superphosphate, and potassium chloride.
There were five treatments, each repeated three times, totaling 15 plots, each measuring 15 square meters. Treatment 1 served as the control, using 15 kg of DAP and 7.5 kg of urea. Treatment 2 used 160 kg of conventional organic fertilizer, 30 kg of superphosphate, and 10 kg of potassium chloride. Treatment 3 applied 200 kg of conventional organic fertilizer, 30 kg of superphosphate, and 10 kg of potassium chloride. Treatment 4 used 100 kg of biogas residue organic fertilizer, 30 kg of superphosphate, and 10 kg of potassium chloride. Finally, Treatment 5 used 140 kg of biogas residue organic fertilizer, 30 kg of superphosphate, and 10 kg of potassium chloride. Sowing took place on May 15th, and all treatments received uniform thinning and topdressing with DAP and urea on June 20th.
Statistical results showed yields per mu of 4858 kg, 5040.3 kg, 5111.4 kg, 4702.5 kg, and 4978 kg respectively. Compared to the control, the increase rates were 3.75%, 5.22%, 5.22%, -3.2%, and 2.47%. Root weights were 0.126 kg, 0.135 kg, 0.149 kg, 0.127 kg, and 0.13 kg respectively.
Among the five treatments, Treatment 4, which used only 100 kg of biofertilizer, had the lowest yield, indicating that this amount may not be sufficient for optimal carrot production in the region. On the other hand, Treatment 5, using 140 kg of biogas residue organic fertilizer, showed a slight improvement compared to conventional methods. When analyzing root weight, there was no significant difference between biofertilizer and conventional organic fertilizer, but both were lower than those from conventional organic fertilizer application.
Overall, the results suggest that optimizing organic fertilizer use, especially with higher amounts of biogas residue, can contribute to better carrot yields while reducing reliance on chemical inputs. This approach supports sustainable farming practices and helps maintain soil health for long-term productivity.
Cervical Tractor,Tractor Cervical,Cervical Vertebra Tractor,Cervical Traction Tractor
Hebei Dingli Medical Equipment Co., Ltd. , https://www.dinglimed.com