| The northeast China located in temperate monsoon climate zone, and it is cold and dry in winter governed by temperate zone continental air, the weather in summer is warm and rainy influenced by temperate Marine air. The surface exposed for a long time beyond the growing season. The weather is dry and the wind is strong in spring,and thus the northeast soil wind erosion is serious, the land desertification has become increasingly obvious, soil organic matter content decline year by year and the deterioration of environment is more serious.The paper mainly based on the main grain-producing areas of Lishu, Jilin province and the national key commodity grain production, as a national conservation tillage demonstration county. Through the county area in full mechanized planting corn technology under three different farming methods, namely the culture of traditional, spacing and a new mode of conservation tillage maize yield of "8020",maize plant growth and development and ecological benefits were studiedThe study showed that "8020" planting pattern and spacing planting pattern take the shortest in different planting patterns, and "8020" planting patterns of seedling stage, jointing stage, tasseling stage and maize growth prophase stimulates the growth of leaf area, and because the bilateral ventilating and lighting effect of maize stem diameter is the largest. Corn in the process of growth and development in a timely manner according to is quite necessary to accelerate the growth of corn, planting early recommended 50 kg/mu, flowering period according to 40 kg/mu of corn growth development period, the shortest is sowing early fertilizers is 40 kg/mu, flowering period fertilizer is 60 kg/mu, birth process less day, extended flowering- mature time2 days.In different deep loosening mode, compaction, and other factors lead to maize growth duration of the longest due to the year before the fall not to carry on the deep loosening, and interlaced deep loosening of maize plants mature the shortest time and interlaced deep loosening of plant height, the largest fou the deep loosening of corn due to large clearance of soil particles, water and soil erosion is serious, a corn plant height is lower than interlaced deep loosening 31 cm, spacing on the yield and the "8020" planting patterns than traditional ridge tillage cultivation increased by 10%.On the mechanized operation process of the three different planting patterns,mechanical ploughing soil moisture content is 14%- 15% for the best, operation standard should choose the following 7 ° slope plot, for "8020" Planting and spacing planting, alternately to no-till precise fertilization seeder row spacing and planting distance adjustment, to the soil before sowing seed coating processing, selecting the appropriate mechanical deep loosening session and deep depth, weeding and extermination by large spray, spray bar type spray machine has realized the temperature in 10 ° above, in the cloudy day time or more before operation, nozzle spraying coverage should be 6 ° to 9 ° repeat angle, nozzle, 35 cm is the best distance from ground mechanical harvest, because of its special corn spacing when the wrong line harvester is adopted to save a lot of farming time and labor, and mechanical harvest grain presented according to were presented.and breakage under 2%, achieved the purpose of increase production in maize yield.The paper focused on the northeast plain region corn conservation tillage and the promotion of full mechanized planting technology and demonstration and provided the corresponding theoretical basis. |
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