How to manage summer corn at flowering and grain stage?

How to manage summer corn at flowering and grain stage? Please introduce that summer corn can be managed with reference to the following methods: one is to apply grain fertilizer skillfully: the so-called skillful application should depend on the appearance of plants in the field, and in fields with sufficient ear fertilizer, good plant appearance, dark green leaf color, and no early decline and fade, it can not be applied to avoid prolonging the growth period. If the ear fertilizer is insufficient and the plant is de-fertilized, grain fertilizer should be applied. The principle of applying grain fertilizer is "sooner rather than later." General mu urea 5 kg or ammonium bicarbonate 10-15 kg, burrowing deep application. It can also be foliar sprayed with a mixture of 1%-2% urea and 0.4%-0.5% potassium dihydrogen phosphate, with a solution of 70kg / mu. Second, irrigation and drainage: soil moisture should be kept at 70%-80% of the maximum field capacity in order to facilitate flowering and insemination. If the field capacity exceeds 80%, pay attention to drainage. Third, interline male removal: when the corn has just tasted, one male ear is removed from one row or another, and 1/2 of the male ear is removed from the whole field, which is conducive to ventilation and light in the field, save nutrients, reduce insect pests, and increase production by 5% to 8%. The method of castration is when the male ear pulls out 1 / 3 or 1 / 2 from the parietal leaf. Before dispersing powder, the male ear should be pulled out in time between rows or plants. It is best to remove the male flowers of the first male plants or weak plants, but do not remove the male flowers in a few lines on the ground, so as not to affect pollination, do not damage the top leaves when removing male, let alone cut off the stems and leaves above the ear, otherwise the yield will be reduced. Click to get more corn planting techniques click to get more food crop planting techniques