There are three main ways to fertilize farmland. First, increase the organic fertilizer and rational use of chemical fertilizers to improve the fertilizer performance of farmland. Second, rational farming, including deep plowing to improve soil tightness, improve soil water storage and ventilation performance, and promote microbial activity to accelerate the decomposition of soil organic matter mineralization. Improve effective nutrient supply. Third, rational drainage and irrigation to eliminate pollution.
However, the current deep loosening machines, including rotary cultivators and chisel shovels, are difficult to successfully complete the requirements for deep application of organic fertilizers and chemical fertilizers. Reasons include: First, the mechanical design of the lack of power, with no movement. Second, many models are non-turning plows, it is difficult to turn a lot of organic fertilizer or chopped straw down to the soil, can only be mixed in the shallow plough layer, resulting in post-sowing wheat species mixed In a large amount of organic fertilizer or stalked plough layer, these coarse materials consume a lot of water and nitrogen, form water with the wheat seedlings, compete for nitrogen, and cause many empty holes in the soil, which leads to run squatting. Failure to reach Miao Quan and Miao Zhuang may also lead to weakness and death of wheat seedlings during the spring drought in the coming year. In view of the problem of the shallow soil and poor quality of soil preparation in the current straw returning field, the farmers' response is to increase the amount of sowing. In some areas, the wheat sowing has been increased to 30 kilograms per mu.
Therefore, from the perspective of fertilization, the current deep-seated cultivation is still not ideal, and it is still not perfect.
1. The combination of deep tillage and deep fertilization. 2. The positioning of fertilization during the planting of wheat with the existing deep-soil cultivation is not a full-layer base fertilizer, but is between the seed fertilizer and the base fertilizer; first, it is necessary to pay attention to the appropriate amount of chemical fertilizer, and in particular, the amount of nitrogen fertilizer cannot be applied in one shot. It is recommended that the nitrogen fertilizer should be applied at the highest rate, or 1/3 of the total nitrogen applied. If nitrogen fertilizers are applied, concentrated distribution in deep roots will not only burn seedlings but also cause waste. In terms of the proportion of nutrients, the use of phosphate fertilizer is the main factor. Fertilizers may be diammonium phosphate or superphosphate plus urea, or calcium superphosphate plus ammonium sulfate, ammonium bicarbonate or ammonium chloride. Special attention: half or more of the nitrogen fertilizer should be used after the year to return to green - re-application at the jointing stage. If ternary compound fertilizer is used, it is better not to choose high-nitrogen compound fertilizers. They are likely to cause unbalanced proportions of nitrogen and phosphorus and are inconsistent with the growth of wheat. They are prone to cause Miao Wang root to be weak, which is not conducive to wintering and greening in the coming year.
Melting point 180 °C(lit.)
Boiling point 1342 °C(lit.)
density 0.534 g/mL at 25 °C(lit.)
vapor pressure 1 hPa (723 °C)
storage temp. water-free area
form wire
Specific Gravity 0.534
color Silvery
Water Solubility REACTS
Sensitive air sensitive, moisture sensitive
Stability: Stability Stable, but reacts violently with water. Store under oil.
However, the current deep loosening machines, including rotary cultivators and chisel shovels, are difficult to successfully complete the requirements for deep application of organic fertilizers and chemical fertilizers. Reasons include: First, the mechanical design of the lack of power, with no movement. Second, many models are non-turning plows, it is difficult to turn a lot of organic fertilizer or chopped straw down to the soil, can only be mixed in the shallow plough layer, resulting in post-sowing wheat species mixed In a large amount of organic fertilizer or stalked plough layer, these coarse materials consume a lot of water and nitrogen, form water with the wheat seedlings, compete for nitrogen, and cause many empty holes in the soil, which leads to run squatting. Failure to reach Miao Quan and Miao Zhuang may also lead to weakness and death of wheat seedlings during the spring drought in the coming year. In view of the problem of the shallow soil and poor quality of soil preparation in the current straw returning field, the farmers' response is to increase the amount of sowing. In some areas, the wheat sowing has been increased to 30 kilograms per mu.
Therefore, from the perspective of fertilization, the current deep-seated cultivation is still not ideal, and it is still not perfect.
1. The combination of deep tillage and deep fertilization. 2. The positioning of fertilization during the planting of wheat with the existing deep-soil cultivation is not a full-layer base fertilizer, but is between the seed fertilizer and the base fertilizer; first, it is necessary to pay attention to the appropriate amount of chemical fertilizer, and in particular, the amount of nitrogen fertilizer cannot be applied in one shot. It is recommended that the nitrogen fertilizer should be applied at the highest rate, or 1/3 of the total nitrogen applied. If nitrogen fertilizers are applied, concentrated distribution in deep roots will not only burn seedlings but also cause waste. In terms of the proportion of nutrients, the use of phosphate fertilizer is the main factor. Fertilizers may be diammonium phosphate or superphosphate plus urea, or calcium superphosphate plus ammonium sulfate, ammonium bicarbonate or ammonium chloride. Special attention: half or more of the nitrogen fertilizer should be used after the year to return to green - re-application at the jointing stage. If ternary compound fertilizer is used, it is better not to choose high-nitrogen compound fertilizers. They are likely to cause unbalanced proportions of nitrogen and phosphorus and are inconsistent with the growth of wheat. They are prone to cause Miao Wang root to be weak, which is not conducive to wintering and greening in the coming year.
Lithium Basic Information
CAS: 7439-93-2
MF: Li
MW: 6.94
EINECS: 231-102-5
Mol File: 7439-93-2.mol
Lithium Structure
Melting point 180 °C(lit.)
Boiling point 1342 °C(lit.)
density 0.534 g/mL at 25 °C(lit.)
vapor pressure 1 hPa (723 °C)
storage temp. water-free area
form wire
Specific Gravity 0.534
color Silvery
Water Solubility REACTS
Sensitive air sensitive, moisture sensitive
Stability: Stability Stable, but reacts violently with water. Store under oil.
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