作物从播种到收获施二次肥,甚至只施一次肥,就可以基本满足作物一生的需要。这是因为土壤具有吸收保蓄肥料和释放供应作物养分的能力,称为土壤的保肥供肥性能。 土壤的保肥性能与供肥性能,具有密切的关系。保肥性能好的土壤可以供肥性也好,但也有可能供肥性是不好的,不过土壤的保肥性是基础,供肥性则决定于条件,但两者都是可以调节的。因此,当我们弄清楚它们的实质和相互关系以后,就能够科学地 Crops from sowing to harvesting the second fertilizer, or even only a fertilizer, you can basically meet the needs of the crop life. This is because the soil has the ability to absorb the stored fertilizer and release nutrients from the supplied crop, which is called the soil conservation and fertilizer performance. Soil fertilizer and fat performance, has a close relationship. Fertilizers are good for fertilizers, but fertilizers may not be as good, but soils are fertilizers and fertilizers depend on conditions, but both are adjustable. Therefore, when we figure out their essence and mutual relations, we can scientifically