In recent years, some new technologies have been gradually promoted in the production of wheat and corn, such as the “One Prevention, Two Reductions,†“One Spray, Three Preventions,†and “One Plus Four,†technologies, which are described below. 1. Corn "one anti-double reduction" technology The “One Prevention and Reduction†technology is an advanced and practical new technology summarized and promoted by the Plant Protection Station of Shandong Province. Its meaning is: In the big bell season of corn, insecticide and fungicides are mixed, and pests and diseases are controlled once and for all, so as to achieve the purpose of reducing the number of pests and reducing the harm degree of diseases in the later period of corn growth, so as to ensure the increase of yield and income of maize. The late corn pests mainly include corn borers, cotton bollworms, beet armyworms, leafhoppers, and corn ear blasts. The diseases of late corn mainly include large (small) leaf spot disease, curvular leaf spot disease, southern rust, and bacterial wilt. The late corn is a season with multiple pests and diseases, but it is difficult to control. To control the occurrence and harm of pests and diseases in the later stage of corn, the big bell-mouth period is the critical period for pesticide application. 667 square meters of available insecticide 50% phoxim EC 20ml, or 1.8% abamectin EC 10ml, or 5 % Avitamin 10ml and so on. The bactericide is treated with 70% carbendazim wettable powder 80 g, or 12.5% ​​diniconazole wettable powder 30 g, or 50% triadimefon EC 50 g. 2. Wheat "One Spray and Three Preventions" Technology Wheat's “one spray and three defenses†technology differs according to the difference in the degree of harm caused by various natural disasters in different wheat producing areas. The key difference is the difference between spraying time and control objects. One way of saying: “One spray and three defenses†of wheat is the use of insecticides, fungicides, plant growth regulators, foliar fertilizers, and micro-fertilizers in the wheat growing season to prevent insect pests, prevent dry heat, and prevent Lodging, increasing grain gain, and ensuring a key technical measure to increase wheat production. Another way to say: Wheat “...spray three defenses†is the use of insecticides, fungicides, plant growth regulators, and micro-fertilizers in the wheat ear to achieve pest control, anti-dry heat, and premature decay resistance. Increase grain weight and ensure key measures to increase wheat production and income. In the middle and late stages of wheat growth, it is a period of leaf (leaf) rust, powdery mildew, head blight, and ear blast, combined with dry hot wind, and can be used as an aphid-killing agent plus a pest control agent plus an anti-dry hot wind stimulation agent. For every 667 square meters (1 mu), use 50% anti-inferiority WP 30g, or 4.5% beta-cypermethrin EC 50ml, or 10% imidacloprid wettable powder 20g, add 12.5% ​​diniconazole wettable powder 30g , Or 25% tebuconazole WP 20-30g, 50% Triadimefon EC 50g or 70% carbendazim WP 50g, plus 100g monopotassium phosphate, 30kg water Evenly spray. 3. Summer corn "an increase of four" technology The core of the "one increase and four change" technique of summer corn is to increase the planting density reasonably, change the varieties with tight tolerance, change the type of planting for live broadcasting, change the fertilizer for the extensive application to formula fertilization, and change the artificial operation into a mechanized operation. The supporting technologies include appropriate late harvest, seed coating, straw returning, non-pollution comprehensive prevention and treatment of diseases and caterpillars, and disaster response technologies. Rationally increasing the planting density is the core of the "one increase and four changes" technology core. To determine a reasonable density, we must consider the cultivation conditions comprehensively. First, we must consider the tightness of the varieties and must match the characteristics of the varieties. Secondly, we must adapt to the yield indicators and match the production conditions and cultivation levels. In general, the compact density of Daejeon is 4200-4800 per 667m2. Replanting resistant varieties is the basis for the implementation of the "one increase and four reforms" technology. At present, the varieties with larger planting area or better promotion prospects mainly include: Zhengdan 958, Yandan 20, Liaoyu 20, Ganzhou 158, Dengdeng Sea 605, Nonghua 101, Ludan 818 and other varieties. Re-planting into live broadcast is an effective means to implement the “one increase and four changes†technology. The main technical measures: 1 timely sowing. The best sowing time in Shandong Province is June 5th-l5th. 7 enough to sow. Seed sowing index requirements soil relative moisture content of 75%, visual precipitation conditions by flooding or timely watering after sowing. 3 appropriate sowing. The amount of seed for single seeding is generally 1.5-2 kg in 667 square meters, which is increased or decreased according to the variety characteristics. 4 line spacing and broadcast depth. Daejeon is generally about 60 cm. When using large and small rows, the large row spacing is 70-80 cm, the small row spacing is 30-40 cm, and the sowing depth is 3-5 cm. Extensive use of fertilization as a form of fertilization is a material guarantee for the implementation of the "-one-plus-four-upgrade" technique. The amount of fertilizer was determined based on the yield index and the basis of soil fertility. The amount of fertilizer needed was calculated by applying 2.5-3 kg of pure nitrogen, 1.5 kg of phosphorus pentoxide, and 3 kg of potassium oxide per 100 kg of fruit. In fertilizer management, organic fertilizer, phosphate fertilizer, potash fertilizer and trace fertilizer were applied before jointing of corn. Nitrogen fertilizer application in stages, skillful application of seed fertilizer, light application of seedling fertilizer, heavy panicle fertilizer, and supplementary application of flower pellet fertilizer. Change manual operations to mechanized operations and adapt to the requirements of "one increase and four change" technologies. Reduce the height of stubble in wheat and provide conditions for maize seeding. Improve the quality of machinery operations, picking clean ears, straw crushed length of less than 5 cm. 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