块状原丝体的产生紧随其后，其次是茎丝体、绿线体和次生根丝体。
The production of massive protonema immediately follows and then caulonema, chloronema and secondary rhizoides.
依照各单位根的功能，小麦根可分为3组：初生根组、次生根下位组和次生根上位组。
According to the function, the wheat roots could be divided into 3 groups: primary root group, lower secondary root group and upper secondary root group.
在试验所处的玉米生育时期（6叶龄），磷对所用自交系的初生根及次生根数量没有影响。
Up to 6 - leaf age of maize, the number of primary and secondary roots of all the genotypes were merely affected.
试验结果表明，春小麦机械覆膜穴播增产效果达到极显著水平，其增产机理主要为小麦次生根数的增加和产量结构的变化。
The results show that the technique has significant effect on yield improvement, and the mechanism is the increase of secondary roots and the change of yield component.
在大田和盆栽条件下，研究了种植密度对冬小麦根系的影响。单株次生根随密度增加而减少，且因生育期进展其影响更为显著；
The effect of different plant densities on root growth in winter wheat was studied in field and pot culture experiments.
在大田和盆栽条件下，研究了种植密度对冬小麦根系的影响。单株次生根随密度增加而减少，且因生育期进展其影响更为显著；
The effect of different plant densities on root growth in winter wheat was studied in field and pot culture experiments.
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