First, select seeds. Before sowing, the corn seeds were sown and sun dried for two days, and then the small grains, grains, broken grains and mold grains were removed. This is the basis for cultivating strong seedlings. Second, single seed species. Single checkpoint species can avoid seedlings competing for more fertilizers, when the seedlings hurt the roots, help to cultivate seedlings. If live, use 2 kg per acre as appropriate, after emergence, seedlings, Dingmiao. Third, leave 4,000 seedlings per mu. Seedlings: 1 row spacing 50 m from 30 cm; 2 row spacing 60 cm spacing 25 cm; 3, row spacing 60 cm spacing 20 cm. Fourth, skillfully applied fertilizer. Two kilograms of urea and two kilograms of diammonium per mu are mixed. When ordering, 1 gram per hole. If live broadcast, one person catches one plant and one person catches fertilizer. Five, early Shi Zhuang Miao Fei. After Dingmiao (5 leaf stage) combined with cultivator cultivator, Songshi saplings, topdressing seedlings fertilizer, topdressing 50 kg of ammonium per acre. Sixth, re-plant strong tree fertilizer. During the big bell-mouth period, the amount of ammonium bicarbonate that was used per acre was 8O kg, 10 kg for diammonium, and 10 kg for potash. Seven, prevention and control of pests and diseases. After the big bell mouth, pay attention to the observation of insects and timely control of borers. One kilogram of carbofuran granules per mu, 3 kilograms of fine soil, and 1 gram per plant were scattered into the heart and leaves. When heading, control aphids and spray omethoate 1,000 times. Eight, intervene. When 20% of the tassels are withdrawn, the tassels begin to be removed, each row is lined up, and the lines and fields do not go.
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