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Elements of acreage technology
I. Single-oil acetate techniques
1. Finely finely applied to the bottom
In general, after the first fall harvest, the land is ploughed in due course and combined with acres with more than 3,000 kilograms of fertilizer per farmer, 50 kilograms of pphosphorus and 40 kilograms of carbon ammonium. Filled with winter water, in the early springs, the earth was torn to ground, the earth was torn to ground, the ground was torn to ground, the acre was to sow 15 kg of ammonium phosphate and 7. 5 kg of urea。
2. Scropping in due course
In general, seeding will take place from 5 to 10 may, with an appropriate advance date for the planting of well-soiled fields, with less saturated or salinized fields being sowed after water, at depths of 4 cm, with two grains per den, with the united states “c101” sunflower。
3. Reasonable secrets
Single-size-line seeding is generally used, 80 cm long, 40 cm small, 25 cm long, 4,400 seedlings per acre and 7-8 taels per acre。
4. Field management
(1) synthetic seedlings: after seedlings are produced, the seedlings are detected in a timely manner, and the seedlings are filled in in a timely manner with soil transfer or seedling in the event of a single leaf。
(2) cultivation of grass by chinese cropping, in due course: 1 pedestal began to be practiced at the time of the first pair of leaves, usually two to three strokes, and 50 cm tall combined with around 10 cm cultivation of soil to prevent inversion。
(3) drinking water in due course, reasonable pursuit of manure: three times during the whole reproductive period, two times fattening, 25 days of sapling, 7-8 saps of headwater, 10-12. 5 kg of urea followed by an acre, 2 water for the current period, 3 water for the flowering period and 20 kg of urea followed by an acre。
(4) leaf fertilisation, auxiliary pollination: in the period between the present revelation and the flowering period, a microfat is used to spray the leaf, and manual assisted pollination is used 2-3 times in the flowering period。
(5) acquiring in due course: when the back of the sunflower dish turns yellow and the edge of the florist is brown, the harvest is possible。
