Entering the ear period, it marks the shift of corn from vegetative growth (the growth of roots and stems, leaves, etc.) to reproductive growth (flowering, fruiting). That is, the intensive phase of vegetative and reproductive growth. This is the most critical period in determining corn production. It is also the fastest growing and developing period of corn, and it is the period with the most requirements for nutrients, moisture, temperature, and light. Therefore, it is a critical period for irrigation and top dressing. Spraying strong spearhead before corn heading can strengthen the physiological function of corn, improve the quality of pollination, fertilization and grouting, and increase grain weight.
Management measures:
(1) Top-up watering in time.
(2) Carry out deep cultivating, promote root differentiation, and expand the scope of nutrient absorption.
(3) Anti-lodging, removal of small diseased plants to facilitate light ventilation.
(4) Spray Tianda 2116 (grain-specific) 600 times + 2% abamectin 3000-fold + 98% misoxiline 3000-fold + 1.8% mycotoxin-speed-kill 1000-fold to prevent and treat leaf spot and bacterial wilt Stem rot and red spider. Effectively control vegetative growth and promote reproductive growth.
(5) At this time, it is in the trumpet phase, and phoxim granules should be used to prevent and control corn borer in time.
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