Corn is sown to jointing stage as seedling stage. Mainly rooting, long leaves, differentiated stems and leaves as the main vegetative growth stage, the growth center is the root system. The seedlings are warm, and they are more resistant to drought, fear of embarrassment, and the fields are more afraid of seedling shortage and grassland, and the soil should be loose. Field management should be based on "early management of early-onset," to prevent the emergence of "old seedlings" to achieve the purpose of promoting roots, strong seedlings, Qi Miao. The main measures:
1 Dingling in the morning should be seedlings during the three-leaf period and four-leafed seedlings. When the seedlings are to be seedlings, they must go to seedlings, weak seedlings, diseased seedlings, and hybrid seedlings, leaving the same strong seedlings. In areas where the seedlings are severely ridged and ridged, it is possible to leave two plants in uniform growth to ensure the density.
2 After cultivating and weeding maize, timely cultivating and loosening the soil to loosen the soil, eliminate weeds, deepen roots, and cultivating 2-3 times. The cultivator has a deep understanding of the principle of shallow seedlings and deep rows. The first cultivator was carried out before the seedlings, with a depth of 3-5 cm. The second and third cultivators are conducted before jointing and the depth is preferably 8-10 cm.
3 Top dressing Top dressing is usually done after seedling till jointing. The fertilization has the role of promoting roots, strong seedlings, and promoting strong stalks, laying a good foundation for panicles and ears. If you don't have enough fertilizer, you have to chase it early. We must apply fertilizers to thin and weak seedlings to promote early-onset seedling growth. Maize seedling water consumption accounted for 31.8% of the total reproductive water consumption, suitable soil relative water content of about 65%. The number of watering at the seedling stage can be controlled 1-2 times. When watering, water must not be flooded. Seedlings in the seedling stage should be digging trenches in time for drainage, lifting the waterlogging, and timely cultivating in order to return seedlings.
4 Prevention of Insect pests Maize seedling stage pests are mainly armyworms, thrips, to prevent armyworm spraying with 50% phoxim emulsion 3000 times; Thrips with 40% emulsion or 50% dichlorvos emulsion diluted 1500 times spray. The spraying of earthworms and pyrethroid pesticides can also kill aphids, ashes, and other poisonous insects, which can prevent virus diseases from occurring.
ZHANGJIAGANG DINSHENGLIN TRADING CO.,LTD , https://www.dslhouse.com