With the arrival of summer, the winter and spring vegetables have entered the late growth stage. The summer vegetables have entered the early stage of planting. How to formulate corresponding management measures according to temperature changes? Experts believe that the following four points should be grasped:
First, adjust the shed film and control the temperature reasonably. For the winter warm greenhouse, when the minimum temperature is stable above 15 °C, the straw curtain should be removed in time or not covered at night, so as to avoid excessive night temperature and a large amount of nutrients, resulting in poor flowering and fruit setting. As the temperature continues to rise, the top wind should increase the amount of ventilation and ventilation time. When the top wind is difficult to control the temperature rise in the shed, the vents at the front face are pulled apart, and appropriate sunshade cooling measures are taken to ensure the normal growth of the crop. For the arch shed, the following methods can be used according to the actual situation to achieve the regulation of the shed environment, which is conducive to the purpose of vegetable growth: First, the top film is still moved with a plastic film to remove the skirt film. In this way, the top film is used to cover the rain, and the lower part is ventilated and permeable.
Second, the top film is still moving with a plastic film, and the skirt film cover insect net is removed. In this way, the top film is used to cover the rain, which can isolate the pests and prevent the pests from harming the vegetables in the shed. However, the shed is poorly ventilated and permeable, and is prone to high temperature or high humidity. The third is to go to the skirt film, keep the plastic top film on the basis of the outer cover shade net. This method is often used for the production and breeding of summer vegetables.
Second, strengthen fertilizer and water, improve the benefits of winter and spring vegetables. After the summer, most of the winter and spring vegetables have entered the late growth stage, and it is inevitable that there will be a decline in the plant. At this time, management should be strengthened to maximize the benefits. It can be strengthened from the aspects of raising leaves and protecting roots. Spraying a full-nutrient leaf fertilizer every 7-10 days, such as Fang Run (20:20:20), timely supply the nutrients needed for vegetable growth. . The manure can not only be high in nitrogen fertilizer, and can be applied by Fang Run (20:10:30). It can also be applied with potassium sulfate compound fertilizer and compound microbial fertilizer to achieve root growth and fruit yield. purpose.
Third, the summer vegetables, promote root control and cultivate strong trees. The temperature is high and the plants are easy to grow. In addition to the regulation of the greenhouse environment, we must also pay attention to the control of soil and watering to cultivate a robust root system.
When planting, the roots can be applied to the roots of anti-dead bio-fertilizer, 80-120 kg per mu, which can not only effectively inhibit the occurrence of root diseases, but also promote rooting and inhibit the growth of the roots, which is conducive to the cultivation of strong trees. . After planting the seedlings, control the watering, and timely ploughing, loosening the soil, enhancing the permeability of the soil, and promoting the development of the root system.
After the plant has grown up, it can be adjusted in time with inhibitors such as 750 times of auxin or 1500 times of chlormequat.
Fourth, prevent pests and diseases, especially viral diseases and pests. As a winter spring vegetable, pest control can not be relaxed, because if it is developed, it will not only reduce the yield and effect of the vegetable, but also increase the number of pathogens in the greenhouse, which is not conducive to the production of the lower crop. For example, tomato leaf mold can be sprayed with ruinong or Shigao agents, and sprayed thoroughly; and bacterial diseases can be sprayed with copper or streptomycin.
Dehydrated Cauliflower,Dehydrated Cauliflower For Cooking,Dehydrated Cauliflower For Soup,Pure Dehydrated Cauliflower Powder
Xinghua Lvwei Foods Co.,Ltd , https://www.lvweifoods.com