First, promote the fine varieties For the severe weather that may be encountered during the growth period of spring maize and summer maize, the use of food and food is recommended to use Suyu 20, Suyu 22, Nongle 988, Denghai 11, etc., and the fresh corn is mainly “Zhongkai 2â€. . Try to buy the seeds of the selected after-coating to prevent the harmful insects in the seedling stage. Second, according to the appropriate time sowing The proper sowing should be done in early spring and later in summer. It is recommended that the sowing date of spring maize be advanced to the late March to the Ching Ming Festival, and the sowing date of summer corn should be postponed to the middle or later of June to avoid the harm of corn seedlings to the corn seedlings. The germination rate of sweet and waxy corn is relatively low (especially sowing in early spring). It is recommended that plastic sheds, simple arch sheds, and plastic tray seedlings be used to raise the germination rate in the middle and late March. In early April, after the daily temperature stabilized at 10°C, transplanting, filming, and direct seeding were conducted. The latest sowing date for autumn corn is around July 20, and the latest sowing date for fresh corn is until the beginning of autumn. Third, a reasonable increase in planting density Sowing before sowing 2-3 days, improve the emergence rate and uniformity. The seeding rate is controlled at 2.5-3.0 kg/mu, which is increased or decreased according to the characteristics of the varieties, so as to ensure that the number of emergences reaches 2 times the number of suitable panicles. The sowing depth is 3-5 cm, and the row spacing for equal spacing is about 60 cm. The row spacing for large and small rows is 80-90 cm and the small row spacing is 30-40 cm. Immediately after emergence, check the seedlings, fill the seedlings and fix the seedlings in the early morning. Generally 3 leaves during the seedlings, 5 leaf stage Dingmiao. Remove weak seedlings, diseased seedlings and insect seedlings in time, and retain strong seedlings, uniform seedlings and Qimiao seedlings to improve the uniformity of the group. At high fertility levels, the dense variety density can be around 5,200 plants/mu. In the jointing stage, the seedlings and weak seedlings were removed in time, and the empty stalks were drawn during the pulling and silking period, so that the effective ear per mu could reach 5000 plants/mu. Fourth, science and fertilizer management For the current farmers to grow corn basal fertilizer application of compound fertilizer is more common status, nitrogen, phosphorus, potash fertilizer can be applied. The production of micro-fertilizer should be increased. Zinc sulphate should be added 1 to 2 kg per mu for zinc-deficient land. On fertilizer maneuvers, organic fertilizer, phosphate fertilizer, potash fertilizer, and microelement fertilizer were used up before the jointing of corn (which can be used as a base fertilizer, seed fertilizer, and seedling fertilizer, as early as possible). The nitrogen fertilizer is applied in stages, lightly applying seedling fertilizer, heavy panicle fertilizer, and supplementing flowering grain fertilizer; nitrogen fertilizer should be applied to soil to avoid spreading. Basal fertilizer: Generally, 2,000 kg of organic fertilizer is applied in Mushi, 7.5 kg of P2O5, and 5.5 kg of potash are used as base fertilizer. Miao Fei: Before the jointing of corn, about 30% of the total amount of nitrogen fertilizer, together with other fertilizers, beside the seedlings, deepen the furrows along the side of the seedlings, 15 to 20 cm from the seedlings, apply 15 cm deep, and strengthen the roots and strengthen the seedlings. Panicle fertilizer: In the corn big bell-mouth period (11th to 12th leaves), 40% to 50% of the total nitrogen is applied to promote the panicles and grains. Flowering grain fertilizer: In areas with conditions, 10% of total nitrogen can be applied in the flowering period to prevent premature aging and increase grain weight. Anti-fall defense can be used per hectare of Vintra No. 2 1 diluted water 30kg, in the big bell mouth period of spray, to achieve proper height reduction and strong bar fall down. V. Integrated control of pests and weeds Weeding before weeding, using atrazine and mixed with another herbicide, such as atrazine 150g plus 50% paracetamol 200g; atrazine 150g plus 72% dole 100-150 ML; Atrazine 150 grams plus 48% of the cable 300-350 grams, etc., when the soil is wet, spray 30-50 kilograms per acre, to prevent heavy spray. As a high stalk crop, corn is difficult to control pests in the later period. Therefore, it is necessary to use a drug to control various diseases and insect pests at the middle and later stages of corn in the big trumpet period of maize, reduce the occurrence of diseases and insect pests at later stages, and reduce the occurrence of pests and diseases. Can be used per acre 20% Chlorantraniliprole Suspension 5 - 10 ml or 22% Thiamin perchlorofluorocarbon microcapsule suspension 15 - 20 ml + 25% pyraclostrobin EC 30 ml mixed spray. Six, timely and late Harvesting time of the corn should be controlled. The ear of the seedlings and the loose and loose leaves of the corn should disappear. The black layer appears and the black layer appears to ensure full maturity. The variety suitable for silage can be harvested in a timely manner. Straw silage is used as feed to increase income. VII. Implementing Anti-disaster Contingency Measures One is to dig a trench in the field and connect the three trenches inside and outside to ensure that irrigation can be done in dry conditions. The second is to help the victims in disasters, timely support for the lodging of corn before the trumpet season, and shallow cultivation of land in order to promote root down. The third is the timely recovery of fertilizers (mainly nitrogenous fertilizers). Yankauer Tip,Yankauer Suction Tip,Suction Tip Yankauer,Surgical Yankauer Suction Tip ShaoXing SurgeCare Medical Products Co., Ltd. , https://www.sxsurgecaremedical.com