Fertilization time When watering and fertilizing, the water temperature should be as close as possible to the ground temperature and air temperature, and do not flood the water. Watering the greenhouse in winter, try to water in the morning; in summer, try to water in the afternoon or evening. If you don't need a dropper, try to pour as little water as possible.
Large water flooding is easy to cause soil compaction, root system breathing is hindered, affecting nutrient absorption, and it is easy to rotten roots and dead trees. Promoting "ridge cultivation" is conducive to high crop yields.
Water soluble fertilizer can only obtain ideal yield and quality by scientific fertilization. Scientific fertilization is not only about the distribution method and quality, but also the scientific dosage.
Generally speaking, 50% of water-soluble fertilizer is used for land vegetables, and the amount per mu is about 5 kg, plus about 0.5 kg of water-soluble organic matter humic acid, amino acids, chitin, etc. In addition to adding nitrogen, phosphorus and potassium nutrients, it can also Improve crop disease resistance, drought resistance, cold resistance, and reduce the occurrence of deficiency.
Water soluble fertilizer scientific application technology
Taking vegetable crops such as cucumbers and tomatoes as an example, cucumbers and tomatoes are crops that are constantly blooming, bearing, and harvesting. According to the test of the Ministry of Agriculture, each 1000 kg of cucumber production requires about 3 kg of nitrogen, 1 kg of phosphorus pentoxide, and oxidation. Potassium 2.5 kg, calcium oxide 1.5 kg, magnesium oxide 0.5 kg.
Cucumbers, tomatoes and other crops have a larger amount of nitrogen fertilizer for early vegetative growth, and phosphorus and boron must not be lacking during flowering. During the fruiting period, the amount of potassium and calcium should be increased, and magnesium fertilizer should be added in the middle and late stages. That is to say, nutrient balance should be achieved during the entire growth period.
In the case of mastering nutrient balance, we should also pay attention to the combined use of water-soluble organic matter, including the use of carbon dioxide gas fertilizer.
Avoid direct flushing and use a second dilution. The water-soluble fertilizer has higher nutrient content than the general compound fertilizer, and the dosage is relatively small. Direct spraying can easily cause burned seedlings to damage roots and weak seedlings. The second dilution not only benefits the uniform application of fertilizers, but also improves fertilizer utilization.
Post time: Sep-25-2020