Peanut

1、Fertilization test treatment of peanut 

There are two treatments in the peanut fertilization experiment: CK (conventional fertilization) and HA - OF (humic acid - based organic compound fertilizer). Base fertilizer is applied before sowing: for CK, 50 kg of balanced conventional compound fertilizer is broadcast per mu; for HA - OF, 50 kg of balanced humic acid - based organic compound fertilizer is broadcast per mu. Topdressing is carried out at the seedling stage: for CK, 10 kg of high - nitrogen conventional compound fertilizer is broadcast per mu; for HA - OF, 10 kg of high - nitrogen humic acid - based organic compound fertilizer is broadcast per mu. Topdressing is conducted at the flowering - pegging stage (when flowering starts): for CK, 20 kg of high - phosphorus and potassium conventional compound fertilizer is broadcast per mu; for HA - OF, 20 kg of high - phosphorus and potassium humic acid - based organic compound fertilizer is broadcast per mu. For foliar fertilizer, 0.3% potassium dihydrogen phosphate is uniformly sprayed, once every 7 - 10 days, for a total of 3 sprays.

Analysis of Test Results (Impacts on Plant Growth Status and Underground Fruits)

Figure 1: Effects of different fertilization treatments on peanut growth

Note: Diagram A = Effects of conventional fertilization (CK) and HA-OF application on peanut plant growth status respectively; Diagram B = Effects of conventional fertilization (CK) and HA-OF application on peanut fruits respectively

Compared with conventional fertilization, the peanut plants treated with humic acid-based organic compound fertilizer (HA-OF) have more luxuriant branches and leaves, a greater number of leaves with more stretched distribution, and an overall more vigorous growth. The peanut fruits are plumper, darker in color, and mature earlier.