In the high temperature and rainy season, the tomato is losing. During the over-summer period, "two-reform, three-timely" management measures should be taken to prevent defeat.
Change the cultivation method: change the flat ridge cultivation to ridging cultivation, to avoid the tomatoes root system by the stain. The plants that have been cultivated in peacetime can be combined with earth and graded to make them become ridgebacks. It is generally completed in 2 to 3 times of earth to prevent overdraw of primary soil and affect root absorption capacity.
Changing the technique of pruning: When the first inflorescence is set, the first branch that grows below the second inflorescence replaces the trunk, and when it has two or three inflorescences, one side of the trunk is selected to be the main trunk. This continuous picking of the heart to replace the head, stimulating plant growth, so that the plant is not defeated in the hot season, more fruit set.
Timely water supply fertilizer: water once every 7 days or so, and 15 to 20 days of top-dressing nitrogen fertilizer such as urea or ammonium nitrate, topdressing about 5 kg per acre. At the same time, spraying potassium dihydrogen phosphate solution on the leaves makes the plants robust and not too long.
Timely Prevention and Control of Pests: Diseases of the tomatoes during the summer are mainly epidemics and viral diseases. The disease was diluted with carbendazim and zearazone in a ratio of 1:1 to 500 times, and then sprayed once every 10 to 15 days. Before the onset of virus disease, a 0.1% to 0.3% solution of potassium permanganate is sprayed every 7 to 10 days to prevent the occurrence of virus disease. In addition, the locust is killed by Nanon's 1500-2000 times liquid spray in a timely manner. Prevent locust from transmitting virus disease.
Timely drainage of water: tomatoes are afraid of flooding, watering in the morning and evening when the cool, immediately after the irrigation water to exclude the ditch.
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