At present, our country has encountered a large-scale drought and how to respond to the disaster scientifically. Here, we talk to farmers' friends about crop fertilization strategies under drought conditions in order to minimize losses.
Fertilization principle
The amount of fertilizer should not be too large. If a large amount of one-time fertilization occurs during a drought, it is easy to wash off the fertiliser when it encounters heavy rain after a drought. This will not only cause economic losses to farmers but also pollute the environment.
Fertilizer deep application, with water pressure fertilizer. In the case of drought, the fertilizer is volatile if only the fertilizer is applied to the surface. If the drought is followed by heavy rain, it is also easily washed away by rain. Therefore, chemical fertilizers should be applied as deep as possible.
Pay attention to the reasonable mix of fertilizers, especially potassium fertilizer and boron fertilizer. Many research data indicate that suitable potassium nutrition can also increase root-shoot ratio and enhance crop water absorption capacity. Under drought conditions, suitable potassium nutrition can promote proline accumulation and regulate cytoplasmic turgor pressure to enhance crop drought resistance. In addition, drought easily induces boron deficiency in crops, especially growing peanuts, fruit trees, and rapeseeds. Therefore, attention should be paid to the appropriate application of potassium fertilizer and boron fertilizer under drought conditions.
Fertilization strategies for spring planting
First of all, pay attention to the application of organic fertilizers and chemical fertilizers, and play the role of “diverting water with fertilizersâ€. Fertilizer should pay attention: organic fertilizer should be cooked, non-rotten organic fertilizer easily lead to high temperature when the fermentation; generally should be used as a base fertilizer and deep plowing combined to facilitate the soil and fertilizer blending, effectively improve the soil; drought conditions, soil moisture content Low, easy to cause burning seedlings, seed and fertilizer must be segregated, if the fertilizer can be applied to planted 10-15 cm, will be conducive to deeper root extension; application rate of 20 to 30 tons of organic fertilizer per hectare With 100 kg of DAP is appropriate.
Second, pay attention to the appropriate method of fertilization. The land with fertilizer and water retention can be appropriately applied with “one-shelled bombardment†fertilization method to avoid catching fertilizers under drought conditions, but attention must be paid to the addition of controlled-release agents when nitrogen fertilizers are applied. If the weather catches up with rain, it should be supplemented with suitable fertilizer.
Again, pay attention to the cooperation with relevant agronomic measures. Spring corn should be selected from varieties with strong drought tolerance. Delayed sowing time may be considered. When the ground temperature stabilizes to 7-8 degrees Celsius or the ground temperature begins to pick up, so as to prevent “powder seedâ€. Soybeans in the original ridge overwintering plots of corn stubble to early suppression of stubble, soybean radon can be used to plant seedlings with no-tillage sowing to enhance the effect of anti-spring drought. Vegetables should be dry heat-treated before seed sowing to improve the ability of vegetables to resist drought. Potatoes should use drought-resistant varieties suitable for local cultivation.
Jingye precision mechanical slitting machine is specially used for slitting various thin strips, such as copper,
Aluminum, iron, stainless steel, up to + -0.002mm
(1). Raw material specifications 1. Material: metal strips such as copper and stainless steel strips. 2. Material width: within 420mm. 3. Material thickness: copper strip 0.05mm∽1.5mm, stainless steel 0.05mm∽1.0mm. 4. The inner diameter of the raw material roll: ï¿ 300mm. 5. Outer diameter of raw material roll:â‰¦ï¿ 1500mm.
6. Weight of raw material roll: ≤3000kg.
Dongguan Liaobu Jingye Precision Machinery Factory , https://www.dgjyjmjx.com