Scientific fertilization method for tomato

  1. Apply enough base fertilizer. The base fertilizer is sufficient, the seedling is early, the early growth is fast, the vegetative growth and reproductive growth are good, which is the key to the early maturity and high yield of tomato. General binding arable mu manure applicator 5000 kg, when administered mounding re quality fertilizer furrow or hole, such as cake, and other dry manure 100 kg, 20-25 kg and fertilizer. Tomato is very sensitive to the reaction of fertilizer. High-fertilizer water can produce high yield. However, when applying base fertilizer, it is not possible to use too much nitrogen to balance nitrogen, phosphorus and potassium.

 

    2 , the fate is reasonable. Tomatoes are vegetables that grow in succession. In addition to the base fertilizer, it is necessary to apply top dressing. 1st top dressing after planting, combined with water Huanmiao reminder Miaofei, it was kind of waste, ammonium sulfate, urea, fertilizer accounts for about 20% of the number of total full of fertilizer; at the end of the first Dunmiao after the spike fruit began to expand, 2nd fertilizer to be applied, this is the focus of dressing period, to a large amount, about 40% of the total amount of fertilizer, the type of fertilizer is ammonium sulfate, urea, ammonium bicarbonate, human waste, Superphosphate, potassium fertilizer, etc., should pay attention to the application of nitrogen fertilizer and phosphate fertilizer; the first fruit will mature, in order to promote the growth of the second and third ear fruits, and prevent premature aging of the seedlings, the third top dressing, the total amount of total fertilizer of 20%; the second ear on the fruit began to mature, the third and fourth ear during rapid fruit growth, a fourth dressing; if insufficient soil fertility, low basal amounts administered, seedling growth retardation, according to the actual situation may Carry out the 5th and 6th top dressings. When using human and animal excrement as top dressing, the initial should be lighter and thicker in the later stage. According to the fertility level of the soil and the amount of base fertilizer applied, as well as the length of the harvest period of the tomato fruit, the total fertility period is 80-100 kg.

 

    The method of top dressing can be applied dry or watered. When dry application, the fertilizer should be sprinkled between the plants ( not to be scattered on the leaves and fruits ) and then watered. It can also be ditched or digging a small pit to be applied, watering after soiling, not too close to the main root when ditching, otherwise it is easy to burn roots, and the fertilizer applied to the ditch is not only concentrated, but also has quick fertilizer effect, but it is relatively labor-intensive. That is, save labor, materials, fertilizer foliar application method is efficient and fast, with the use of the main species concentrations: 2% superphosphate, 1% potassium dihydrogen phosphate, 0.5% urea. Foliage should choose sunny, after spraying should ensure that there is no rain 24 hours gas to bear fruit, the best spraying time should not be carried out at noon in the evening or morning dew still, so as to avoid high temperatures accelerate the speed of the liquid concentrate Cause phytotoxicity. In addition, foliar application with trace elements such as boron, manganese and copper has the effect of increasing the vitamin C and soluble matter content of the tomato .

    The response of tomato to the application rate of nitrogen fertilizer is sharp. When the irrigation is high, the temperature is high, and the seedlings are fixed and weak, if the nitrogen fertilizer is applied too much, the stems and leaves are easy to be too lush, and the phenomenon of prolonged stems and abnormal stems often occur. flowering and fruiting fruits develop normally. Therefore, in the early stage of plant growth, before the fruit growth and development, the application rate of nitrogen fertilizer should not be too much. During fruit enlargement, umbilical rot is often caused by calcium deficiency in the soil or the ability of the plant to absorb calcium . If calcium phosphate is sprayed early, it will receive obvious control effects.