The method of zero drainage rate combined with short-term high-concentration nutrient solution to increase the sugar content of tomato fruit
A nutrient solution, high-concentration technology, applied in fertilization methods, botanical equipment and methods, agriculture, etc., can solve problems such as yield decline, achieve stable yield, increase sugar content, and simple operation methods.
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Embodiment 1
[0020] 1.1 Test materials and test methods
[0021] The experiment was carried out in the plastic greenhouse of the School of Horticulture, South China Agricultural University. On May 11, 2014, the "Greenhouse Momotaro" tomato plants that had grown to bloom in the first greenhouse were planted in a non-woven single cultivation pot with a volume of 750mL. Filled with coconut peat as a cultivation substrate. After the fourth inflorescence of the plant blooms, leave two leaves on the top for topping, and leave 4 fruits in each fruit room. After planting, monitor the daily change of substrate water potential in the substrate, and perform automatic drip irrigation below -2kPa (such as figure 1 ), the nutrient solution is the Japanese garden test formula EC1.6dS / m (NO 3 -N 11me / L, P 3.0me / L, K 5.0me / L, Ca 5.0me / L, Mg 3.0me / L), EC2.4dS / m (NO 3 -N 16me / L, P 4.0me / L, K 8.0me / L, Ca 8.0me / L, Mg 4.0me / L).
[0022] By adjusting the liquid supply frequency of automatic irrigation, the d...
Embodiment 2
[0026] 2.1 Test materials and test methods
[0027] The experiment was carried out in the plastic greenhouse of the School of Horticulture, South China Agricultural University. On September 10, 2014, the "Greenhouse Momotaro" tomato plants that had grown to bloom in the first greenhouse were planted in a non-woven single cultivation pot with a volume of 750mL. Filled with coconut peat as a cultivation substrate. Other experimental conditions are the same as in Example 1.
[0028] EC value of nutrient solution: Increase the EC value of nutrient solution from 1.6dS / m to 2.4dS / m in the third week after flowering, and return to 1.6dS / m after the fifth week. Drain rate: 0%, 20%.
[0029] 2.2 Results and analysis
[0030] image 3 and Figure 4 It shows that the EC value of the matrix solution shows an upward trend in the flowering period, reaches the peak at the 5th week after flowering, maintains a stable high level in the fruit hypertrophy period, and declines in the harvest...
Embodiment 3
[0033] 3.1 Test materials and test methods
[0034] The experiment was carried out in the plastic greenhouse of the School of Horticulture, South China Agricultural University. On May 11, 2014, the "Greenhouse Momotaro" tomato plants that had grown to bloom in the first greenhouse were planted in a non-woven single cultivation pot with a volume of 750mL. Filled with coconut peat as a cultivation substrate. Other experimental conditions are the same as in Example 1. The experimental design included three treatments ( Figure 5 ), the drainage rate was all 0%.
[0035] Nutrient solution treatment: On the basis of EC1.6 / 2.4 / 1.6 in Example 2, two additional NaCl nutrient solution treatment areas were added during the promotion and maintenance period, and salt stress was carried out at the 2nd week and the 3rd week after flowering respectively.
[0036]3.2 Results and Analysis
[0037] Figure 6 It was shown that during the promotion period of salt accumulation, the EC value o...
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