Mid-term management. The main role of field management from jointing to heading is to coordinate the relationship between vegetative growth and reproductive growth. While promoting the growth of stems and leaves, fully ensure the normal proceeding of ear differentiation, and lay a foundation for achieving large spikes and many grains. The field management during this period includes top dressing, irrigation, cultivating, weeding, and pest control. Topdressing is the main field management measure, grasping both the promotion and control of high-fertilizer plots, and the poorly-fertilized plots prompting it to the end.
Late management. The main task of field management is to preserve the roots, protect the leaves, prevent premature aging, promote early maturation, and increase grain weight. Field management mainly includes rational irrigation, application of attacking granular fertilizers, and spray-promoting growth regulators (ethephon).
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