Breeding,seed production,and high yield cultivation techniques of maize variety Zhongxu No.1
The parental sources,breeding process,variety characteristics,seed production techniques,and high yield cultivation techniques of maize variety Zhongxu No.1 were summarized and analyzed.This variety was cultivated with ZF428 as the female parent and ZX410 as the male parent.It was approved by the Anhui Provincial Crop Variety Approval Committee in 2024(approval number:Wanshenyu 2024T004).This variety was planted in the north of the Huai River in Anhui Province,and had the characteristics of good field growth,excellent quality,strong resistance,and high yield.The key points of its seed production technology include selecting plots with good water conservancy conditions and flat terrain as seed production bases;strictly set up isolation zones through methods such as spatial and temporal isolation;staged impurity removal treatment to eliminate mixed seedlings in the field;adopting the method of touching the buds with leaves to remove the male spikes from the maternal plant;reasonably arrange the parent line ratio and sowing schedule;predicting the flowering period and adjust it using chemical and physical methods to ensure that the flowering periods meet;timely harvest and separate storage to prevent mixing.High yield cultivation techniques include selecting suitable plots for light,temperature,fertilizer,and water conditions for planting;sow at the appropriate time and sow content;adopting a single seed sowing machine to ensure reasonable seedling density;soil sealing and weed control before sowing,chemical weed control during the 3-5 leaf stage;apply sufficient basal fertilizer,apply timely topdressing during the bell mouth and pollination periods,and supplement zinc,boron,and other trace element fertilizers in moderation;timely irrigation and timely drainage of accumulated water in the fields;adopting appropriate pesticides to prevent and control pests and diseases such as ground tiger,maize borer,rust,etc.;harvest maize kernels promptly when the milk ripening line completely disappears.This article provides a reference for further promotion and planting of this variety.
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