因为它们无法作为单株的植物存活。
应用单株选择的方法称为系统育种。
Application of individual plant selection method known as the system breeding.
单株桃数作为间接选择性状更有效。
To use fruit number per plant as an indirect selection indicator will be more effective.
单株性状好并不代表单位面积产量高。
The perfect individual plant traits do not mean the high yield per unit area.
对于林木单株生长，以中度间伐效果最好。
Concerning the individual growth, the intermediate thinning has the best effect.
商品性好，品质极佳，单株重8公斤左右。
Commodity nature is good, excellent quality and weight of about 8 kg.
结果期与单株产量呈显著正相关，相关系数为0.5836。
Fruit set time had positive correlation with plant yield, the correlation coefficient was 0.5836.
单株玉米的根干重随水分条件的改善而提高，高N处理的玉米根重低于相应的低N处理；
The dry root weight under high N level was lower than that under low N level;
单株玉米的根干重随水分条件的改善而提高，高N处理的玉米根重低于相应的低N处理；
The dry root weight under high N level was lower than that under low N level;
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