Relationship Between Production Performance And Planting Pattern Of Different Maize Varieties

Maize in the world and our country planted area and total production has surpassed rice and wheat,leaped to become the first major food crop.Silage maize is a basic feed for dairy cows and a regular feed for cattle sheep.Under the policy of adjusting grain to feed planting structure and supporting the development of silage maize in the country,by studying the agronomic traits,biological yield,nutrient composition and stress resistance of different maize varieties,the silage maize varieties suitable for local planting were screened out,and the field biological yield of silage maize was improved by high-yielding cultivation mode.It is of great significance to the livestock production and the increasing yield of the farmers.In order to study the field biological yield,nutrient composition and planting pattern of different maize varieties,high-quality silage maize varieties and suitable high-yield planting pattern were selected.Seven maize cultivars with large planting area,including jingke 968,zhengdan 958,dedan NO.123,luqing NO.1 and dedan NO.5,were randomly grouped for field trial planting in agricultural production.The maize varieties zhengdan 958,dedan NO.123,luqing NO.1 and dedan NO.5 were tested in different planting patterns for four years.Field experiments showed that agronomic traits,stress resistance and field biological yield of different maize varieties were significantly different,plant height,ear position and seedling emergence rate of silage maize were positively correlated with biological yield of whole maize,and agronomic traits,stress resistance and field biological yield of the same maize variety were significantly different under different planting densities.There was a positive correlation between planting density and folding rate,a positive correlation betweenplanting density and fresh matter yield of whole plant maize,and a negative correlation between folding rate and whole plant maize yield.There was no significant difference in the content of CP,EE,ANF&NDF,but significant difference in agronomic traits,stress resistance and field biological yield of the same maize variety under different planting patterns.The results showed that dedan No.5 and luqing No.1 had good yield,stress resistance and quality,and were suitable for popularization in Tai’an area.The optimum planting density per hectare is 82500 for each of dedan NO.5,and it is suitable for planting with large and small row planting pattern.From the perspective of field biology and animal nutrition,the relationship between field performance index,nutrient content,field cultivation mode and the comprehensive production performance of maize were analyzed.The results are of great significance for screening suitable Maize Cultivars in combination with regional environmental indicators.The results of this study are mainly completed in Huang Huai Hai area,and the results are of great significance for the screening of suitable Maize Varieties in northern China.Meanwhile,this method provides a feasible model for screening different varieties of different ecological regions in China.