万物土中生。土壤是作物生长的基础。土壤种类繁多,其性质各异,因此,必须做到因土、因作物、因肥、因天气,实行诊断配方施肥,才能提高化肥利用率,提高作物的产量。下面谈谈因土配方施肥问题: 一、黑土类黑土类有黑油土、黑土、黑沙土、黑鳅土、黑灰土、黑黄土等。这类土壤颜色较深黑,有机质含量丰富,黑土层深厚,保水保肥,土壤为 Everything in the soil students. Soil is the basis for crop growth. Due to the wide range of soil types and their different properties, it is imperative to increase fertilizer use efficiency and increase crop yields due to soil, crops, fertilizers and weather due to the implementation of diagnostic formula fertilizers. Here to talk about fertilization problems due to soil formula: First, the black soil type black soil black soil, black soil, black sand soil, loach soil, black lime soil, black loess and so on. These soil darker color, rich in organic matter, deep black soil, water and fertilizer, the soil is