Recently, Wei Yu, the contractor of the Jinsui Company in Longan County, Guangxi Province, discovered that the banana leaves were dry and the root system was damaged. “Help the farmer ask†to go to Zhang Xuejuan, a 2014 graduate student of the Jinsui Science and Technology Institute of China Agricultural University. She gave a reason analysis and solution to the problem after field investigation:
The main soil types in Guangxi are red soil, red brick soil, and red soil, and the soil is acidic to strongly acidic. This kind of soil will have an adverse effect on the growth and development of bananas, especially some newly planted banana gardens. The pH of the soil may be as low as 4 or so, leading to banana acidity.
The growth of banana roots is inhibited by the acid damage. Black rot will occur when the bananas are damaged. The leaves will also suffer yellowing and death, which will have a great impact on the yield and quality of the bananas. Acid soils provide a suitable growth environment for root-knot nematodes. Nematodes can damage banana roots, their growth and development are inhibited, and they are also susceptible to other pathogens. Acidifying the soil will also increase the probability of banana blight infection, as long as the disease will not be saved, known as banana cancer.
After test verification, we have found a set of comprehensive improvement methods for soil acidification problems in the banana orchard: Before planting, 150 kg of lime are used for acid disinfection, and then 1250 kg of organic fertilizer is applied per acre under the ridge of bananas. Spread evenly and mix well with the soil. In the usual management of fertilization, follow the principle of “a small number of timesâ€, increase calcium magnesium fertilizer, organic fertilizer, and pay attention to the balance of nitrogen and potassium ratios. At the same time, with the application of soil testing and fertilizer application techniques and leaf nutrient diagnosis technology, timely understanding of soil and plant nutrient status, reasonable adjustment of fertilizer input, prevent soil acidification.
Hydroponics is a subset of hydroculture, the method of growing plants without soil, using mineral nutrient solutions in a water solvent. Terrestrial plants may be grown with only their roots exposed to the mineral solution, or the roots may be supported by an inert medium, such as perlite or gravel. The nutrients in hydroponics can come from an array of different sources; these can include but are not limited to waste from fish waste, duck manure, or normal nutrients.
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