Tomato cutting and cutting is the use of tomato lateral branches for asexual propagation of seedlings. This kind of nursery can maintain the characteristics of breeds better; the time of raising seedlings is short, usually 15 to 20 days; the results are early, generally from the beginning of the third quarter, spikes appear (seedlings only appear in the sixth to eighth section spikes ); can also save seed costs. Due to the early results of tomato seedlings cuttings, the inhibition of vegetative growth is large, and the roots are adventitious roots, the plant growth potential is weak, and it is prone to premature aging. Cultivation must be strengthened and attention should be paid to supplementing nutrients in the early stage.
The cutting time of cuttings is determined according to the cultivation season. Taking the Yangtze River Basin as an example, spring late-maturing cultivation can be cut from the end of March to the beginning of April; open-field cultivation can be cut from the end of April to the beginning of May; greenhouses can be planted after the late autumn and late June and early July, and the latest in early August. Cuttage; there is a solar greenhouse that can be grown in winter and cuttings begin in August.
Cutting methods can be used to nurse seedlings by means of cuttings or watering with nutritious soils according to regions, seasons, environments, and nursery facilities. Take the Yangtze River Basin as an example. In spring and late autumn, cuttings using nutrient soils will have the highest survival rate from April to May. In the high-temperature and high-humidity seasons from July to August, if the seedling sheds do not have good cooling facilities, even if the shade nets are covered, the Nutrient soil cutting is also very easy to cause cuttings to rot, resulting in failure of nursery. Therefore, indoor water plugging should be adopted.
The cuttings were selected to be disease-free, stout, dark green, short in internodes, 15-20 cm long, 4-5 nodes long, well-growth spots, buds but not in plants with good growth potential and strong disease resistance. Lateral branches of flowering branches.
Trim the shoots and remove the lateral branches from the base. Remove the lower leaves and retain 3 to 4 leaves in the upper middle. The most prone to rooting at the node of the tomato, the lower stem of the first branch of the lateral branch can be removed.
Cutting (1) nutrition soil cutting. Add 2 parts of fertile organic fertilizer without pests and diseases, without planting Solanaceae crops, and add 1 part of decomposed organic fertilizer to sifted, spray 200 mg/elevated potassium manganate solution, and add 1 kg of superphosphate per cubic meter of nutrient soil. , Grass ash 5 ~ 10 kg and mix well, into the nutritional soup, placed in a seedbed. To promote hair rooting, the 3 to 4 cm section of the lower end of the shoot may be immersed in 50 mg/l naphthylacetate solution or 100 mg/l indole acetic acid solution for 10 minutes, or with a mixture of 0.3% potassium dihydrogen phosphate and 0.2% urea Soak 2 - 3 hours, then rinse with water. After the nutrition is poured into the water, the depth is 3 to 5 cm. Immediately after the cutting, take a small shed to cover the shade net to keep warm, moisturize and shading. (2) water plug. One gram of indole acetic acid powder was dissolved by adding a small amount of alcohol, and then 5 kg of clear water was added to make a rooting liquid. Measure 10 ml of the original solution and pour 10 kg of clear water into the rooting solution. Take 10.2 g of potassium nitrate, 4.9 g of calcium nitrate, 2.3 g of potassium dihydrogen phosphate, and 4.9 g of magnesium sulfate. Dissolve them by adding a small amount of water, and then pour them into a container filled with 10 kilograms of clean water. Stir well and serve as water for seedling nutrition. liquid. The 500-ml wide-mouthed bottle was disinfected, and the plug was inserted after pouring the rooting solution, and 10 to 12 bottles were inserted per bottle. After the roots of the cuttings are cultured with nutrient solution.
Cutting management (1) nutrition soil cutting. 5 to 7 days after cutting is the wound healing period, this stage to avoid direct sunlight, shading rate of 70% to 80% is appropriate, ventilation is prohibited, the shelf temperature is maintained at 25 ~ 30 °C during the day, kept at 17 ~ 18 °C, The ground temperature is maintained at 18 to 23°C, and the relative humidity of the air is kept above 90%. After cutting seedlings begin to sprout adventitious roots, the coverings can be opened sooner or later, and the time and intensity of illumination should be appropriately increased. The appropriate amount of ventilation should be maintained. The shelf temperature should be maintained at 25-28°C during the day, 15-17°C during the night, and the ground temperature should be maintained at 18-23°C. Spray a 0.1% to 0.2% potassium dihydrogen phosphate solution every 5 to 7 days. 15 days after cutting, 5 to 7 new roots of 5 cm or more and several adventitious roots sprouted at the lower end of the shoot, and they entered the seedling stage. At this time, they can be managed according to the management method of normal seedlings. (2) water plug. After the insert is inserted, it is kept at 22-28°C during the daytime and 15-20°C during the night. Change the water every other day, change the water every day when the temperature is too high or there are too many branches. When the cuttings grow into the roots of the well-developed seedlings, they are transplanted into the nursery sheds.
The cutting time of cuttings is determined according to the cultivation season. Taking the Yangtze River Basin as an example, spring late-maturing cultivation can be cut from the end of March to the beginning of April; open-field cultivation can be cut from the end of April to the beginning of May; greenhouses can be planted after the late autumn and late June and early July, and the latest in early August. Cuttage; there is a solar greenhouse that can be grown in winter and cuttings begin in August.
Cutting methods can be used to nurse seedlings by means of cuttings or watering with nutritious soils according to regions, seasons, environments, and nursery facilities. Take the Yangtze River Basin as an example. In spring and late autumn, cuttings using nutrient soils will have the highest survival rate from April to May. In the high-temperature and high-humidity seasons from July to August, if the seedling sheds do not have good cooling facilities, even if the shade nets are covered, the Nutrient soil cutting is also very easy to cause cuttings to rot, resulting in failure of nursery. Therefore, indoor water plugging should be adopted.
The cuttings were selected to be disease-free, stout, dark green, short in internodes, 15-20 cm long, 4-5 nodes long, well-growth spots, buds but not in plants with good growth potential and strong disease resistance. Lateral branches of flowering branches.
Trim the shoots and remove the lateral branches from the base. Remove the lower leaves and retain 3 to 4 leaves in the upper middle. The most prone to rooting at the node of the tomato, the lower stem of the first branch of the lateral branch can be removed.
Cutting (1) nutrition soil cutting. Add 2 parts of fertile organic fertilizer without pests and diseases, without planting Solanaceae crops, and add 1 part of decomposed organic fertilizer to sifted, spray 200 mg/elevated potassium manganate solution, and add 1 kg of superphosphate per cubic meter of nutrient soil. , Grass ash 5 ~ 10 kg and mix well, into the nutritional soup, placed in a seedbed. To promote hair rooting, the 3 to 4 cm section of the lower end of the shoot may be immersed in 50 mg/l naphthylacetate solution or 100 mg/l indole acetic acid solution for 10 minutes, or with a mixture of 0.3% potassium dihydrogen phosphate and 0.2% urea Soak 2 - 3 hours, then rinse with water. After the nutrition is poured into the water, the depth is 3 to 5 cm. Immediately after the cutting, take a small shed to cover the shade net to keep warm, moisturize and shading. (2) water plug. One gram of indole acetic acid powder was dissolved by adding a small amount of alcohol, and then 5 kg of clear water was added to make a rooting liquid. Measure 10 ml of the original solution and pour 10 kg of clear water into the rooting solution. Take 10.2 g of potassium nitrate, 4.9 g of calcium nitrate, 2.3 g of potassium dihydrogen phosphate, and 4.9 g of magnesium sulfate. Dissolve them by adding a small amount of water, and then pour them into a container filled with 10 kilograms of clean water. Stir well and serve as water for seedling nutrition. liquid. The 500-ml wide-mouthed bottle was disinfected, and the plug was inserted after pouring the rooting solution, and 10 to 12 bottles were inserted per bottle. After the roots of the cuttings are cultured with nutrient solution.
Cutting management (1) nutrition soil cutting. 5 to 7 days after cutting is the wound healing period, this stage to avoid direct sunlight, shading rate of 70% to 80% is appropriate, ventilation is prohibited, the shelf temperature is maintained at 25 ~ 30 °C during the day, kept at 17 ~ 18 °C, The ground temperature is maintained at 18 to 23°C, and the relative humidity of the air is kept above 90%. After cutting seedlings begin to sprout adventitious roots, the coverings can be opened sooner or later, and the time and intensity of illumination should be appropriately increased. The appropriate amount of ventilation should be maintained. The shelf temperature should be maintained at 25-28°C during the day, 15-17°C during the night, and the ground temperature should be maintained at 18-23°C. Spray a 0.1% to 0.2% potassium dihydrogen phosphate solution every 5 to 7 days. 15 days after cutting, 5 to 7 new roots of 5 cm or more and several adventitious roots sprouted at the lower end of the shoot, and they entered the seedling stage. At this time, they can be managed according to the management method of normal seedlings. (2) water plug. After the insert is inserted, it is kept at 22-28°C during the daytime and 15-20°C during the night. Change the water every other day, change the water every day when the temperature is too high or there are too many branches. When the cuttings grow into the roots of the well-developed seedlings, they are transplanted into the nursery sheds.