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作物生长季节中,在田间经常会碰到植株生长差的问题。作物植株生长不良的现象可发生在零星而不规则的小块地段上,也会在大面积上产生。问题的产生是由很多因素所造成的,包括土壤虫害、鼠害、植物病害、空气污染以及土壤肥力不平衡等。无论是那种因素,人们都想去找出它,从而使下年不再出现类似情况,或甚至试图去挽救当季作物。在探寻植株的磷钾营养物质含量方面已有好的进展。我们可能已经熟悉于土壤测验,
Crop growth season, in the field often encounter poor plant growth problems. The phenomenon of poor plant growth can occur in sporadic and irregular small plots, but also in a large area. The problem is caused by many factors, including soil pests, rodents, plant diseases, air pollution and imbalances in soil fertility. No matter what kind of factor, people want to find it, so that next year no longer a similar situation, or even try to save the seasonal crops. Good progress has been made in exploring the content of phosphorus and potassium nutrients in plants. We may already be familiar with soil testing,