When is summer maize planted? As the saying goes: "Spring fights for the day, summer fights", spring corn and summer corn planting time are different, summer corn planting time is better after wheat harvesting, that is, planting in June. Of course, the sowing time of summer corn should also be determined according to the local climate, precipitation, etc. Next, Xiaobian will briefly talk about the matters needing attention during the summer corn planting process.
First, plant summer corn, to promote the rapid growth of seedlings, early rooting, more rooting, in order to increase production
In the process of planting summer corn, it is necessary to fertilize early, and the fertilization is heavy before and after heavy application. When fertilizing, the fertilization technique of “one bottom and one chasing†is adopted. This method is used to promote the early growth of the seedlings, promote the maturity, and increase the number of grains per panicle and 1000-grain weight. Phosphorus and potassium fertilizers in summer maize are more absorbed during the seedling stage, and one-time deep application is preferred when ploughing before transplanting. Nitrogen fertilizers are absorbed throughout the growth period and should be applied in divided doses.
For the first time, use the seedling fertilizer, apply 700 kg of commercial organic fertilizer + 50 kg of compound fertilizer + 25 kg of urea per mu in the ploughing; in the 14-leaf stage of summer maize, apply 20 kg of urea per acre, fertilization method It is applied after opening a deep groove of 9 cm or more at the side 15-20 cm.
Second, secondly, pay attention to irrigation and drought relief, and prevent disasters
Moisture is an important material basis for crops to survive and grow. Water shortage can lead to the loss of corn granules. Therefore, in the process of planting summer corn, it is necessary to pay attention to watering and drought resistance, and also pay attention to flood control.
Third, pouring water at the bottom is the key measure to increase corn production in summer
After transplanting corn, it is necessary to pour the bottom of the water, which not only ensures the whole seedling, but also plays a significant role in promoting the early development of strong seedlings. Summer maize flowering to filling stage is the peak period of corn water demand, timely irrigation and drought resistance in continuous dry weather; drought-resistance method: use the shallow temperature difference when the nighttime is shallow, and drain the water before the sunrise.
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4. The tolerance of corn is poor. When the soil moisture exceeds 80% of the field water holding capacity, it will be detrimental to the growth and development of waxy corn.
Before and after the tasseling period, the maximum water depth in the field should be controlled within 8-12 cm, and the water accumulation time should not exceed 2 days. In the summer rainstorm, if there is water accumulation in the field, ditch drainage should be carried out to avoid black roots. At the same time, we must strengthen the work of cultivating the soil.
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