Organic fertilizer for modifying plow layer of low-yield land and repairing heavy metal plants

Abstract

The invention relates to an organic fertilizer for modifying the plow layer of a low-yield land and repairing heavy metal plants. For the modification of the plow layer (0-35 cm deep) of the low-yield land, the soil should comprise 30% of organic matters, 6% of inorganic nutrients, 5% of calcium (including chelated calcium, complexed calcium and and ionized calcium), 10% of silicon, and 0.5% of magnesium, zinc, manganese, molybdenum, selenium and on the like by weight percent. For the repair of the heavy metal plants in the plow layer of the soil, the following types of plants are involved: cadmium absorption accumulator plants: Pteris VittataL., Pteris CreticaL., Sedum Olfre diiL., and Phyto Cacca atinosa ROXL.; cadmium hyperaccumulator plants: Vio la booshanensis and Solanym nigrumL.; chromium absorption accumulator plants: Digitaria Sanguinnalis; arsenic hyperaccumulator plants: ciliate desert-grass lead accumulator plant: E.Canadensis; nickel accumulator plant: taraxacum officimale.

Description

technical field [0001] The invention relates to an organic fertilizer, which is a new organic fertilizer product formulated for phytoremediation of low-yield field cultivation layers and removal of heavy metals. technical background [0002] For a long time, the use of chemical fertilizers in paddy field soil plow layer is mainly used, accounting for about 60% of the amount of fertilizer applied. In addition, the soil rotation index of paddy fields increases, and the consumption of organic matter in the soil increases, which are extremely unfavorable factors for the sustainable development of agriculture. Of my country's 1.6 billion mu of arable land, two-thirds are low-to-medium yield fields with low organic matter content in the soil. It is impossible to meet the requirements of high, stable and efficient yields only by applying chemical fertilizers. Soil fertility decline is one of the important factors affecting the sustainable development of agriculture and stable and ...

AI Technical Summary

Problems solved by technology

In addition, the soil rotation index of paddy fields increases, and the consumption of organic matter in the soil increases. These are extremely unfavorable factors for the sustainable development of agriculture.

Of my country’s 1.6 billion mu of arable land, two-thirds are low-to-medium yield fields, with low organic matter content in the soil. Only relying on the application of chemical fertilizers cannot meet the requirements of high yield, stable yield and high efficiency.