Amaranth grows from seed germination to flower bud differentiation, which is the growth period of roots, stems and leaves. It is divided into germination stage, seedling stage, vegetative growth period and wintering dormancy period. From flower bud differentiation to pollination and fertilization, the seed matures and is the reproductive growth stage of amaranth. This period is divided into flower bud differentiation stage, convulsion flowering stage and seed development stage. Fertilize the leek can be done by the following methods:
The fertilizer requirement of amaranth is: the growth amount and the amount of fertilizer consumed in the seedling stage are small, but the vegetative growth period, especially in the spring and autumn harvest season, the growth amount and the amount of fertilizer required are large, and a large amount of fertilization should be carried out in stages. The 2 to 4 year old leek grows vigorously, has strong tillering ability, high yield, and requires the largest amount of fertilizer, which is the peak of fertilizer demand. Amaranth, which is more than 5 years old, gradually enters the aging stage. In order to prevent premature aging, it is necessary to strengthen fertilization.
Amaranth fertilization technology:
1. The base fertilizer of amaranth: Generally, on the basis of applying organic fertilizer, 25 to 30 kilograms of phosphate phosphate fertilizer per acre.
2, topdressing of leeks: leeks generally topdressing twice in the fall, the first time to chase the Tianji brand of NPK fertilizer 30 ~ 35 kg, the second time to chase the Tianji brand NPK 20 kg, while re-application before wintering A single organic fertilizer. Fertilization in spring should be combined with organic fertilizer to chase the Tianji brand of 20-30 kg of NPK fertilizer to facilitate the return to green. For each harvest, 30-35 kg of NPK fertilizer should be applied to each acre.
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