Potato

1.Fertilization test treatment of potato

There are three treatments in the potato fertilization experiment: CK (conventional fertilization), FA - OF (humic acid - based organic compound fertilizer), and CK + FA - OF (combined application of conventional compound fertilizer and humic acid - based compound fertilizer). Among them, base fertilizer is applied before planting: for CK, 50 kg of balanced conventional compound fertilizer is broadcast per mu; for FA - OF, 50 kg of balanced humic acid - based organic compound fertilizer is broadcast per mu; for CK + FA - OF, 25 kg of conventional compound fertilizer and 25 kg of humic acid - based organic compound fertilizer are mixed and broadcast per mu. For topdressing at the seedling - raising stage: for CK, 5 kg of high - nitrogen conventional compound fertilizer is applied by drip irrigation per mu; for FA - OF, 5 kg of high - nitrogen humic acid - based organic compound fertilizer is applied by drip irrigation per mu; for CK + FA - OF, 2.5 kg of high - nitrogen conventional compound fertilizer and 2.5 kg of high - nitrogen humic acid - based organic compound fertilizer are applied by drip irrigation in sequence per mu. For topdressing at the tuber enlargement stage: for CK, 10 kg of high - potassium conventional compound fertilizer is applied by drip irrigation per mu; for FA - OF, 10 kg of high - potassium humic acid - based organic compound fertilizer is applied by drip irrigation per mu; for CK + FA - OF, 5 kg of high - potassium conventional compound fertilizer and 5 kg of high - potassium humic acid - based organic compound fertilizer are applied by drip irrigation in sequence per mu.

Analysis of Test Results (Impacts on Potato Plants, Potato Tuber Quality, and Yield)

Figure 1: Effects of spraying conventional fertilizer (CK) and CK + HA-OF (humic acid-based organic compound fertilizer) on potato plant growth

Figure 2: Comparison of tuber size of potatoes under different fertilization treatments 

Note: Diagram a = conventional fertilization treatment (CK); Diagram b = HA-OF application treatment; Diagram c = CK + HA-OF application treatment

Compared with conventional fertilization (CK), the potato plants treated with humic acid - based organic compound fertilizer (FA - OF) in the experiment have more luxuriant and darker green branches and leaves, and are stronger overall. The potato tubers are larger, more uniform and plump.