Fertilization characteristics of grapes in the protected area of ​​the shed

Protecting the cultivation of grapes requires higher nutritional conditions than open field cultivation. For example, red earth is cultivated in plastic greenhouses and greenhouses. The yield per mu is up to 10,000 kg. The harvesting period is up to 100 days. The amount of fertilizer applied is generally 1 to 2 times higher than that of open fields. Organic fertilizer is applied per square meter of cultivated area. Kilograms, including 150 kg of horse manure and 100 kg of manure; in addition to the application of high-quality base fertilizer, in the fruit expansion period, before and after harvesting and fruiting period, more than 10 times of fertilizer should be applied in combination with watering. Since the cultivated grapes are grown in a low temperature and low light environment, the quality requirements of the fertilizer are also very strict. The highest quality decomposed organic fertilizer should be used, and most of them should be high quality commercial fertilizer. When applying farmyard manure in autumn and winter. The amount of heat-prone horse manure should be increased to increase the temperature and indoor carbon dioxide. Fertilizers used in protected field cultivation have also changed significantly in recent years. The proportion of urea with higher effective components of urea has increased, and the use of compound fertilizers and mixed fertilizers has gradually increased. In addition to NPK, trace elements such as calcium, magnesium and sulfur, as well as carbon dioxide gas fertilizers, are also being used. Slow-release fertilizers and pesticides are also being tested.

perforated metal sheet

Perforated Screen,Wire Screen,Galvanized Perforated Metal

Baochuan Wire Mesh Products Co., Ltd. , http://www.anp-wiremesh.com