First, the selection of varieties
It is necessary to select large fruit varieties that are resistant to disease, heat and high yield, such as Qiangfeng, Xianfeng and Jiahong.
Second, timely sowing, cultivating strong seedlings
Seedlings are generally planted in the open field in mid-May. Seeds should be soaked in 0.1% high potassium silicate solution for 30 minutes before sowing, rinsed out and rinsed with water for 3 to 4 times, placed in a place of 28 ~ 30 °C to germination, after 3 to 4 days of seed whitening sowing. Before planting, the nursery is poured into the water. After the water is infiltrated, the seeds that have been germinated are spread evenly, and then the soil is covered by about 1 cm. In order to facilitate the timely release of seedlings, the mulch may be added to the surface after sowing, but the film must be uncovered in time to prevent the seedlings from being unearthed; after the seedlings are released, in 1 to 2 true leaves and 3 to 4 true leaves. Multiple seedlings, seedlings 5 ​​~ 7cm square.
In order to avoid the young seedlings, the seedling period is not drought or watering, and the method of covering the fine soil in stages is adopted to protect the cockroaches, and if necessary, watering can be carried out 1 or 2 times. Pour a large amount of water before planting to facilitate seedlings.
Third, reasonable close planting, high ridge cultivation
Before planting, combined with deep-cultivation of 5,000 yuan of soil-fertilized soil, 50kg of superphosphate and 25kg of urea as base fertilizer. Then, flattened, ridged according to 1.4m, the ridge top is round and the ridge height is 15cm. When planting, the tomato seedlings are planted on the half slopes on both sides of the ridge top. Before planting, the holes are first dig, then the water is planted, the plant spacing 27 to 30 cm, 3000 plants per mu.
Fourth, comprehensive management after planting
1, skillful topdressing, in order to promote more results. After the first ear fruit is stored, 5-8 kg of urea is applied per acre, and 100 kg of ash is planted, and the application is shallow. After the first and second ear fruits are harvested, 10 kg of urea and 15 kg of urea are applied per mu, and water is timely poured after topdressing to facilitate nutrient absorption. In addition, root dressing can be carried out according to the growth of the plant, and alternately sprayed with 0.3% dipotassium phosphate and 0.5% urea solution.
2, the application of hormones, flowers and fruits. Flowering from the first to the fourth inflorescence, timely application of the flower stalk with 25ppm tomato spirit or 10~15 of 2?4-D can effectively prevent the falling and falling fruit caused by high temperature and drought.
3, timely tying the vines, tied the vines to fight the top. When the plant is as high as 30cm, the vine should be tied in time, and the vines should be placed on the top of the ear, and the tightness is moderate. Single dry pruning, except for the main branch, the rest of the tweezers are erased. 5 to 9 spikes should be topped in time. When topping, keep 2 to 3 leaves in the upper part of the ear to prevent sunburn.
4. Prevention of pests and diseases. Use 1:1:200 times Bordeaux mixture or 500-700 times of sensitized zinc, once every 7 to 10 days, alternately sprayed to prevent tomato disease. The harm of aphids, cotton bollworms and tobacco budworms can be controlled by using 1500 times of fruit juice.
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