First, the principle of fertilization of protected tomato: Mainly based on base fertilizer, supplemented by topdressing.
Re-application of high-quality organic fertilizer as a base fertilizer can not only provide the nitrogen nutrients needed in the early stage, but more importantly, the organic fertilizer can supplement the deficiency of nitrogen, phosphorus, potassium, calcium and some trace elements in the soil. Under the general soil fertility level, you can apply high-quality and decomposed farmyard manure 7000-8000 kg/mu, deep turn 40 cm, then turn over again, mix the fat soil, and finely level. The ditch is 10-15 cm deep, and the ditch is applied with 20-30 kg/mu of calcium phosphate or 20 kg/mu of diammonium phosphate, 10 kg/mu of urea, 20-30 kg/mu of potassium sulfate, and closed greenhouse heating After the day, pour the bottom of the water and plant it again. Watering at the time of planting, controlling watering after slow seedlings, digging in the field, promoting roots and slashing, preventing high temperature and high humidity.
The top dressing of the tomato should not be too much. In the future, heavy fertilizer should be applied. The principle of topdressing is: from less to more, from thin to thick, mainly in the early stage, mainly in the late stage. Dilute manure and fertilizer are used interchangeably. Soil drought and fertilizer should be light, and the soil should be moist and strong. Topdressing 3 to 5 times during the whole growth period.
(1) Light application of fertilizer: After the seedlings are planted, they are mainly based on nitrogen nutrition, preferably in the flowering stage of the second ear, which will promote early results and high yield. Generally, 10 to 15 days after planting, combined with watering, manure urine 500 kg/mu, or urea 10 kg/mu, or ammonium sulfate 20 kg/mu.
(2) Heavy application of fruit fertilizer: When the first ear fruit begins to expand, the root system absorbs nutrients vigorously. At this time, nutrient supply is very important, and it is also the key topdressing period in tomato life. It is mainly based on nitrogen fertilizer and is applied with phosphorus and potassium fertilizer. Generally, the application of diammonium phosphate is 10-15 kg/mu, or ammonium nitrate is 15-20 kg/mu, and the application of potassium sulfate is about 10 kg/mu.
(3) Qiao Shisheng fruit fertilizer: After the first ear fruit is harvested, the second ear fruit is applied when it is swollen. Because the tomato enters the fruit for a long time, it needs more fertilizer and water, otherwise it is easy to fall and fall. In this period, the amount of fertilizer applied should be large, and special attention should be paid to the application of phosphorus, potassium fertilizer and trace element fertilizer. Generally apply ternary compound fertilizer or diammonium phosphate 40 ~ 50 kg / acre, or decomposed thin human excrement 1000 ~ 1500 kg / acre, with water.
(4) Applicable relay fertilizer: in the greenhouse, winter and spring, or autumn and winter cultivation, late-maturing tomato, the result is long, the yield is high, and the fertilizer is large. Therefore, timely and appropriate amount of anti-early early fat is very important. Generally, 30 to 50 kilograms of ternary compound fertilizer or 1000 to 1500 kilograms of diluted manure are applied.
In addition, if the umbilical rot fruit occurs, 0.5% calcium chloride can be sprayed in time, and the spray is applied several times, and the control effect is remarkable.
Huaxian County Fertilizer Station Zhao Dongli
Re-application of high-quality organic fertilizer as a base fertilizer can not only provide the nitrogen nutrients needed in the early stage, but more importantly, the organic fertilizer can supplement the deficiency of nitrogen, phosphorus, potassium, calcium and some trace elements in the soil. Under the general soil fertility level, you can apply high-quality and decomposed farmyard manure 7000-8000 kg/mu, deep turn 40 cm, then turn over again, mix the fat soil, and finely level. The ditch is 10-15 cm deep, and the ditch is applied with 20-30 kg/mu of calcium phosphate or 20 kg/mu of diammonium phosphate, 10 kg/mu of urea, 20-30 kg/mu of potassium sulfate, and closed greenhouse heating After the day, pour the bottom of the water and plant it again. Watering at the time of planting, controlling watering after slow seedlings, digging in the field, promoting roots and slashing, preventing high temperature and high humidity.
The top dressing of the tomato should not be too much. In the future, heavy fertilizer should be applied. The principle of topdressing is: from less to more, from thin to thick, mainly in the early stage, mainly in the late stage. Dilute manure and fertilizer are used interchangeably. Soil drought and fertilizer should be light, and the soil should be moist and strong. Topdressing 3 to 5 times during the whole growth period.
(1) Light application of fertilizer: After the seedlings are planted, they are mainly based on nitrogen nutrition, preferably in the flowering stage of the second ear, which will promote early results and high yield. Generally, 10 to 15 days after planting, combined with watering, manure urine 500 kg/mu, or urea 10 kg/mu, or ammonium sulfate 20 kg/mu.
(2) Heavy application of fruit fertilizer: When the first ear fruit begins to expand, the root system absorbs nutrients vigorously. At this time, nutrient supply is very important, and it is also the key topdressing period in tomato life. It is mainly based on nitrogen fertilizer and is applied with phosphorus and potassium fertilizer. Generally, the application of diammonium phosphate is 10-15 kg/mu, or ammonium nitrate is 15-20 kg/mu, and the application of potassium sulfate is about 10 kg/mu.
(3) Qiao Shisheng fruit fertilizer: After the first ear fruit is harvested, the second ear fruit is applied when it is swollen. Because the tomato enters the fruit for a long time, it needs more fertilizer and water, otherwise it is easy to fall and fall. In this period, the amount of fertilizer applied should be large, and special attention should be paid to the application of phosphorus, potassium fertilizer and trace element fertilizer. Generally apply ternary compound fertilizer or diammonium phosphate 40 ~ 50 kg / acre, or decomposed thin human excrement 1000 ~ 1500 kg / acre, with water.
(4) Applicable relay fertilizer: in the greenhouse, winter and spring, or autumn and winter cultivation, late-maturing tomato, the result is long, the yield is high, and the fertilizer is large. Therefore, timely and appropriate amount of anti-early early fat is very important. Generally, 30 to 50 kilograms of ternary compound fertilizer or 1000 to 1500 kilograms of diluted manure are applied.
In addition, if the umbilical rot fruit occurs, 0.5% calcium chloride can be sprayed in time, and the spray is applied several times, and the control effect is remarkable.
Huaxian County Fertilizer Station Zhao Dongli
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