Corn "Increase and Change" Technology

Corn's technology of "increase and change" has the core content of increasing the planting density reasonably, replanting the dense-cultivated varieties, and replanting the varieties into live broadcasts. The extensive fertilizer application was used to formulate fertilization, and artificial planting was changed to mechanized operations.

1. Reasonably increase planting density. The planting density should be compatible with the variety requirements. Generally, compact and compact maize varieties should be planted with seedlings of 4200-4700 plants/mu, and large panicle varieties with plants of 3200-3700 plants/mu. High-yield fields increase appropriately.

2. Replanting and resistant varieties. Increase the promotion of high-quality, high-yield varieties such as Zhengdan 958, Yandan 20, Ludan 9902, Liaoyu No. 18, Lainong No. 14 and Tiantai No. 10, etc.

3. Change the nesting for live broadcast. Accelerate the popularization of summer corn robberies live broadcast technology, promote no-tillage live broadcast, timely sowing, enough sowing, adequate sowing.

4. Change the fertilization to fertilize the formula. Promote the application of formula fertilization, the general plot to do nitrogen, phosphorus, potassium and other balanced fertilization. Determine the amount of fertilizer based on the yield indicators and the basis of fertility, pay attention to increase phosphorus, potassium fertilizer and trace fertilizer. Nitrogen fertilizer application by stages, light Miaofei, heavy panicle fertilizer, make up for flowering grain fertilizer.

5. Change manual planting to mechanization. To improve the level of corn mechanization, mechanization of corn sowing, promotion of combine harvester harvesting, and advance mechanization of corn production.

6. Other supporting technologies. Including seed coating technology, no-tillage or less-tillage cultivation and straw returning technology, pest-free comprehensive prevention and control technology, and disaster response technology.

7. Suitable to promote the region. Shandong Province and the Huanghe Huaihai summer maize main production area.

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