Tomato planting time
The normal situation of tomatoes is that the seedlings are usually planted in the Beijing area from mid-February to early March. The south of the Yangtze River, such as Shanghai and Nanjing, is sown from late July to early August. The effect is best, while the yield in eastern Sichuan is higher in early July. high.
Tomato planting knowledge
The following principles should be followed during planting:
1. According to the soil fertility conditions, comprehensive consideration of environmental nutrient supply, appropriate reduction of the amount of nitrogen and phosphorus fertilizer.
2, the old vegetable shed pay attention to the application of more straw-containing compost, less chicken manure, duck manure and other poultry manure, this can restore the ground force, supplement the carbon dioxide in the shed, it is also good for salt removal, reduce the obstacles of continuous cropping.
3, the early spring temperature is low, the soil nutrient supply is slow, the early topdressing should keep up, after May, reduce the nitrogen fertilizer topdressing, increase the use of potassium fertilizer; the early autumn temperature is high, the soil organic nutrient supply capacity is strong, mainly control, do not topdress.
4. Recommended fertilization should be closely combined with reasonable irrigation. It is recommended to use sub-membrane furrow irrigation, drip irrigation, etc., each irrigation should not exceed 30 square meters per mu, and the sand should not exceed 22 square meters.
5, for the wintering long tomato, use summer leisure to plant sweet corn, to achieve a reasonable rotation, to overcome the obstacles of continuous cropping.
Ultra-Thin Ball Valve,Industrial Ultra-Thin Ball Valve,Thread Globe Valves,Threaded Swing Check Valve
ZHITONG PIPE VALVE TECHNOLOGY CO.,LTD , https://www.ztongvalve.com