Autumn vegetables are about to begin, and fertilization has become a hot topic for discussion among farmers. The author finds that because many farmers have some irrational fertilization habits, it causes serious waste. The main points of fertilizing autumn corn are summarized below for your reference.
base fertilizer. The total amount of fertilizer is about 50%, and the basic fertilizer is usually applied or applied. Applying a proper amount of chemical nitrogen fertilizer as seed fertilizer at the time of sowing has a good effect on strong seedlings. Ammonium sulphate or ammonium nitrate is usually 5-7 kg per mu. Trace element fertilizers are used for seed dressing or soaking, with 2 to 4 grams of zinc sulfate per kilogram seed dressing and 0.2% zinc sulfate for soaking.
Miao Fei. Usually in the seedling 4-5 leaf stage combined with seedlings (or Dingmiao), weeding and weeding applications, should be applied early, light and partial application. Poor site preparation, insufficient base fertilizer and weak seedlings should be applied as soon as possible. If the basal fertilizer is sufficient, the soil is more fat, and the seedlings grow well, then the seedlings may not be chased or traced.
Stalk fat. Also known as jointing fertilizer, generally in the jointing period, that is, when the basal internode begins to grow, it will take up about 20%-30% of the total fertilizer, and the stalk manure is mainly organic fertilizer, with a small amount of fertilizer, generally per acre. When composting, heaping 1,000 kg of manure, or 7-10 kg of compound fertilizer, attention should be paid to weak seedlings to promote balanced growth throughout the field.
Pan ear fertilizer. Refers to the development of the tassel to the tetrad, the development of the ear to the florets during the differentiation period. At this time, it is a key period for determining the size of the ear and the number of grains of the ear. Panicle fertilizer should generally be re-applied, the amount of fertilizer is about 60% of the total fertilizer, and quick-acting fertilizer is appropriate.
Granular fertilizer. The role is to raise the roots to protect the leaves, prevent premature defermentation of corn in the late, through the extension of the functional period of green leaves, increase grain weight. The application of granular fertilizer is light and skillful. The amount of fertilizer applied accounts for about 10% of topdressing.
If the soil fertility is higher, the basal fertility is better, and the seedling potential is better, the stalk fertilizer can be steadily applied and the panicle fertilizer can be weighed. On the contrary, the stalk fertilizer can be reused and the panicle fertilizer can be less applied. Insufficient panicle fertilizer, yellow-green leaves, and early leaves of the lower leaves, grain fertilizer can be applied more properly; otherwise, you can apply less or not.
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