1. Prepare for preparation before broadcast
1.1 Choose a good variety of varieties with heat, disease resistance, high yield, good commercial products, mainly: Shandong 1856, 1857, Jiafen 17, Zhongza No. 9 and so on.
1.2 Do seed treatment Before sowing, the seeds are wrapped in gauze, placed on 10% phosphoric acid trisodium immersion for 20 minutes, washed with water after immersion, and then sown after drying.
1.3 Soil Disinfection Disinfect the soil before sowing and planting. The thiophanate-methyl and carbendazim are commonly used. 1.5-2 kilograms per acre, mixed with soil mixed into the wolfberry.
2, sowing
2.1, timely sowing. Sowing time is based on the date of planting. The general sowing date is from June 20 to July 6. The seedling age is about 25 days.
2.2, sowing methods. The main sowing methods include sowing (seedlings), sowing and drilling (live broadcast), but no matter what kind of methods are needed to shade and raise seedlings.
3, strengthen the seedling period management
3.1 Appropriate management of the seedling temperature is controlled at 22-24°C, it can be increased to 25-26°C during the day and can be reduced to about 20°C at night. In order to keep the soil moist, it is generally not appropriate to remove the cover when the bed temperature is not too high.
3.2 The management of the break-out period First of all, as much as possible to ensure that the seedlings are not frozen, the sun will be seen. Second, it is appropriate to reduce the temperature, control the daytime 16-18 °C, night 12-14 °C. The third is to control the watering and lower the bed soil temperature. In addition, time seedlings are applied when the seedlings are crowded.
3.3. The vigorous growth period takes management measures to promote control and integration. It is mainly to provide suitable temperature, strong light, sufficient moisture and nutrients.
3.3.1 Control day and night temperatures are 20-24°C/14-15°C; day/night temperatures are 16-18°C/12-14°C.
3.3.2 Under the premise of ensuring the above temperature, it is generally not required to cover in order to facilitate ventilation.
3.3.3 To ensure the supply of water and nutrients, normally in normal fine weather, water should be sprayed every other day to keep the beds moist; even at low temperatures and rainy weather, water should be sprayed every 2-3 days or so. Maintain a semi-dry state on the bed. In the case of bed soil fertility, watering can be sprayed with 2-3 times of nutrient solution. The nutrient solution should pay attention to the combination of N, P and K. The total concentration of the three should not exceed 0.2%. Here is a nutritional solution formulation for reference applications. That is, 50 grams of urea, 80 grams of potassium sulfate, 50 grams of potassium dihydrogen phosphate, add 100 kilograms of water, the solution concentration of 0.18%. NPK special compound fertilizer can also be used for preparation.
3.3.4 When the seedlings are long enough, they can be sprayed with 50ppm paclobutrazol or take loose soil and other measures.
3.4 The management of the hardening period can be carried out within 3-4 days before the planting. Mainly to take control measures, including control of humidity and cooling, remove the cover and so on. Necessary to bed soil or intentional loose soil roots.
4 The seedling height is about 23 cm, 6-7 leaves, and the buds are initially displayed. The seedling age is about 25 days. When you reach the height of the seedlings, you can plant them. Plant spacing: 3560 cm, planting density of 2700-3200 trees.
5. Strengthen management after planting
5.1 The temperature is planted until 25-30 degrees during daytime, 17-15 degrees at night, and 25-28 degrees during daytime and 15-12 degrees at night.
5.2. Stained flowers When the first panicle blooms 2-3, when the flower is about to open or half open, use Shennong No. 2 to dip the flowers, each (2 ml) to 1-1.25 kg of water, generally no in the morning. After the dew and after 3 pm, it was stained (2, 4-d disabled).
5.3 Fertilizer and Water Management When the size of the first panicle walnut is top-dressing and watering in time, Mushi ammonium sulfate is 25-30 kg + 10 kg potassium sulfate. When the size of the second, third, and fourth ear nuts is walnut, 1-2 times more fertilizer is applied, and 25 to 30 kg of ammonium sulfate is applied. The amount of air to be gradually reduced from large to small. When fruit matures, it is forbidden to use chemical agents such as ethephon to promote redness in order to reduce drug residues.
5.4 Harvest September 10 is the set fruit period, all subsequent flowers will be removed. General yield of about 6,000 kilograms.
6. Pest control. The tomato pests and diseases mainly include early blight, late blight, gray mold, virus disease, leaf mold, bacterial wilt, whitefly, and leafminer. Pest control shall adhere to the plant protection policy of "prevention first, comprehensive prevention and control", give priority to agricultural measures, physical measures, and biotechnology, and scientifically, safely, and reasonably use chemical pesticides to effectively control the occurrence and harm of pests and reduce the use of pesticides. , Has achieved the effect of pollution prevention and control.
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