1, pay attention to growth
Look at the growth of the plant, usually when the plant is short of water, the leaves are also wilting, the growth will be weakened, and the fruit umbilical rot will occur more. At this time, the water should be replenished in time.
2, pay attention to public opinion
If you look at the soil moisture, if you water the greenhouse when the soil is not dry, it is not only bad for raising the ground temperature, but also easy to cause the soil permeability to deteriorate, resulting in the lack of oxygen in the roots, causing roots and yellow leaves.
3, pay attention to the weather
Be sure to watch the weather forecast before watering, not only to choose sunny watering, but also to ensure 2-3 days of sunny after watering to avoid rainy weather after watering, resulting in increased humidity in the shed and lower ground temperature. More diseases, more need to pay attention to the deep winter season, in the first two days after the cloudy days, it is not suitable for watering, should first increase the shed temperature and ground temperature, so that the plants basically return to normal and then water.
4, pay attention to the ground temperature
The average daily ground temperature for vegetable growth is around 22 °C. In the deep winter season, the ground temperature in the greenhouse is mostly 15-20 °C. If the watering is excessive or the timing of watering is incorrect, the ground temperature will drop rapidly, causing root injury and endangering. The growth of the shoots above the ground, therefore, the watering at low temperatures is preferably carried out after the straw is opened in the morning.
5, pay attention to cover the mulch
Covering the mulch not only reduces surface water evaporation, maintains soil moisture, reduces air humidity, reduces disease occurrence, but also increases ground temperature and accelerates vegetable growth.
6, pay attention to moderate watering
Watering the vegetables in winter and spring sheds, generally follow the principle of no shortage of water, no dry, no wet, keep the water content of crop rhizosphere soil at 60%, prevent excessive over-watering, and avoid flooding. Excessive watering tends to reduce the temperature inside the shed, and the soil temperature is unfavorable for crop growth. Winter spring shed vegetables should be poured with small water, or poured with a kettle, which can basically meet the needs of crop growth, and can prevent the temperature in the shed from dropping significantly, and the humidity is obviously increased, thus inhibiting the occurrence of a large number of pests and diseases.
7, pay attention to timely watering
When the vegetables appear wilting and the tendrils cannot stand normally, it indicates that there is water shortage and should be watered in time. Watering should be carried out around noon on sunny days. After pouring, it should be properly ventilated and dampened to prevent excessive humidity in the shed, causing the spread of pests and diseases. In particular, Botrytis cinerea and Cucumber Downy Mildew can easily occur under high temperature and high humidity conditions.
Disclaimer: Some articles on this website are transferred from the Internet. If legal rights of third parties are involved, please inform this website. phone
China: In accordance with Article 54 of the Food Hygiene Law of the People's Republic of China, Article 28 of the Hygiene Management Measures for Food Additives, Article 2 of the Hygiene Management Measures for Food Nutrition Enhancers and Article 99 of the Food Safety Law of the People's Republic of China, food additives are defined as: Food additives refer to artificial or natural substances added to food for the purpose of improving quality, color, aroma and taste of food and for the purposes of preservative, fresh-keeping and processing. According to GB 2760-2014 National Food Safety Standard for The Use of Food Additives, food additives are defined as "artificial or natural substances added into food for the purpose of improving food quality, color, aroma and taste, as well as for the needs of anti-corrosion, fresh-keeping and processing technology. Spices for food, base agents in gum-based confectionery and processing AIDS for food industry are also included.
Food Addictives Powder,Tryptamine Powder,Beta-Nicotinamide Mononucleotide Powder,Sucralose Bulk Food Additives
Shaanxi YXchuang Biotechnology Co., Ltd , https://www.peptide-nootropics.com