向日葵和其他作物一样在生长中需要合理施用N、P、K营养才能保证增加产量和提高籽实的品质。据国外文献报道向日葵不仅强调氮、磷营养,而且还强调钾素营养,钾素对向日葵的影响要比其他作物更大,缺钾植株不仅易倒伏,感染病害而降低抗逆性,还影响籽实油脂含量的提高。鉴于上述情况,我们在1980年缸栽试验基础上,于1981、1982两年进行了田间小区试验。 Sunflower, like other crops, needs reasonable N, P, and K nutrition to ensure increased yield and improved seed quality. According to foreign literature, sunflower not only emphasizes nutrition of nitrogen and phosphorus, but also emphasizes potassium nutrition. The effect of potassium on sunflower is greater than that of other crops. Potassium deficiency plants are not only easy to lodging, infecting diseases and reducing stress resistance, but also affecting seed Increase in fat content. In view of the above, we conducted field trials in 1981 and 1982 on the basis of the 1980 planted pot experiment.