What are the fertilization taboos for fruit trees, vegetables and flowers?

1. Fertilization taboo for fruit trees 1. The closer the fertilization point is to the tree, the better. Many fruit farmers are close to trees when fertilizing, some are less than half a meter away from the root neck, and even dig the backbone roots. Results Root injury and root burning often occur, and the effect is usually not ideal.

The more fertilizer, the better. The supply and demand of nutrients in the trunk are unbalanced, and the worst case is that the roots burn, trees die and pests breed. At least, vegetative growth and reproductive growth are unbalanced, and only trees are growing, with little or no results.

3. Fertilization time is busy. Trees have no time to fertilize when they need it, and people don't have to fertilize trees when they are idle. If fertilization is not carried out according to the fertilizer demand period of fruit trees, the optimal fertilizer demand period of fruit trees will be missed, and the high-yield effect will be greatly affected.

4. Fertilization type is optional. Using organic fertilizer instead of base fertilizer, or using un-retted crop straw instead of farm manure and other organic fertilizers, year after year, the result is that the soil fertility of artificial forest decreases, the plant type decreases, the yield decreases, and the fruit deteriorates.

5. Heavy fertilization underground and light fertilization above ground. Many fruit farmers are used to underground fertilization, and ignore or lack understanding of the effect of above-ground fertilization, that is, foliar spraying fertilizer, which leads to serious physiological diseases and insect pests such as yellow leaf disease, lobular disease, fruit shrinkage disease and leaf blight, and reduced leaf photosynthesis.

2. Taboos of greenhouse vegetable fertilization 1. Too much diammonium phosphate is not suitable for vegetables and fruits;

2. Rare earth trace element fertilizer should not be applied to soil immediately, but should be used as seed fertilizer or foliar spraying;

3. Ammonium nitrogen fertilizer should not be combined with acid farmyard manure;

4. Potassium nitrate is not suitable for shallow application;

5. Ammonium sulfate cannot be used for a long time;

6. Effective chlorine organic fertilizer should not be applied to saline-alkali land and chlorine-free crops;

7. It is not appropriate to water immediately after applying urea, and it is not appropriate to apply urea with water;

8. Phosphorus and potassium fertilizers are not suitable for dispersed application;

9. Potash fertilizer should not be topdressing in the middle and late period of crop growth;

10. farmyard manure is not suitable for spraying on vegetables and fruits immediately;

1 1. Unfertilized peanut bran is not suitable for many crops to use immediately;

12. Livestock manure is not suitable for seed fertilizer or fertilization.