Four principles of summer maize selection

First, look at growth stages selected in accordance with cropping system, in southern Hebei, such as 7 to 10 days before interplanting wheat harvest, should be chosen growth of 95 to 105 days, preferably cooked varieties; if the wheat harvest mechanical tillage, should to select early maturing varieties mainly growth period of 90 to 95 days is appropriate.

 

Second, consider the adaptive selection of the biological characteristics and morphological characteristics of the variety and local environmental conditions and production conditions, and have excellent characteristics of resistance to fertilizer, disease, insect, and lodging. For new varieties that have not been planted in the local area, a small amount of trials should be carried out first to avoid " not accepting water and soil " .

 

Third, according to the purpose of cultivation, the selection of grain type mainly considers the grain yield of corn; the grain and feed combination should consider the grain yield and the yield of stems and leaves, the plants with high plant height and individual biomass; the corn should be considered for fresh corn. The size of the stick and the high sugar content of the kernel, high viscosity.

 

Fourth, the selection of high purity varieties is one of the important factors to increase production. According to the test, the purity of corn seeds is reduced by 1% , and the yield per mu is reduced by 16.05 kg.

 

Source: China Agricultural Promotion Network