Maize dual planting technology
The two-row planting on the corn ridge is based on the original ridge planting and adopts a large plant spacing. Two plants per hole are planted. The seeds are two seeds connected together from the same cob. Through years of experiments, it has been proved that the two-strain maize planting is more conventional than conventional Planting methods increase production by 17% to 44.3%.
Main cultivation techniques
1. Variety selection Choosing high-quality, high-yielding and dense corn varieties, the main choice of Xianyu 335 is currently the main push variety.
2, ridiculing sowing flat terrain, fertility above average plots, when the plough layer 5cm ground temperature stable through 6 °C ~ 8 °C, moisture content of about 20%, open plow sowing. After the normal ridging, the seedlings were planted with a manual seeder. The spacing between the rows was 46.2 to 52.8 cm. Two plants per hole were planted.
3, timely watering seedlings timely irrigation of seedlings to ensure that the whole seedling seedlings, Miao Qi Miao uniform; in case of drought, pouring enough water, pumping male water and rising water.
4. Fertilization amount and fertilization method The fertilization amount shall be determined according to soil testing, formula fertilization test results, and soil fertility and planting density. The fertilization amount of the mu shall be pure nitrogen of 325 to 400 kg, pure phosphorus of 90 to 100 kg, and pure potassium of 125 to 200 kg. Fertilization method to take the bottom, combined with recovery, to ensure that the whole growth period is not de-fertilizer. Base fertilizer application of nitrogen fertilizer 35%, 70% of phosphorus fertilizer, potassium fertilizer 100%. The manure fertilizer application of nitrogen fertilizer 10%, 30% of phosphorus fertilizer, topdressing corn in the big bell-mouth fertilizer topdressing 55%.
5, pest control and prevention of corn stickworm and corn borer. The corn armyworm can be sprayed with 40% water-containing phosphoramidite 500-600 times or 2.5% enemy-killed 1000 times; the control of corn cocoon can be seen at the beginning of the corn leaf, and the young larvae cluster the heart and leaves. Before cutting into the stalk, 1.5% of phoxim granules can be dropped directly into the bell mouth; 90% of trichlorfon 800-1000 times or 75% of phoxim emulsion 1000 times can be used for the head stage At the top of the ear, the effect is better.
6, chemical control treatment in the corn 8 to 12 leaf phase timely chemical treatment to prevent lodging.
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