The Establishment and Application of Models for Recommending Formula Fertilization for Different Maturing Genotypes of Broccoli

According to the requirements of different fertilizers for early-maturing and late-maturing broccoli, this study aimed establish models formula fertilization apply them in recommendation by aid soil testing performed main broccoli-producing areas. In paper, based on effective functions nitrogen- (N), phosphorous- (P), potassium (K)-balanced broccoli two mature types, were established. The recommend was accomplished 12 plots same analysis N, P, K fertilizer contributions yield indicated that application rate variety higher than variety, when contribution reached extreme value. even had a significantly negative effect with continuous increase variety. results showed optimal combinations applying could be recommended, according genotypes nutrient levels.