First, choose high-quality varieties
Select varieties with short growth period, strong resistance to diseases, close tolerance, high yield and oil content. Such as G101, spring sowing period of 100 days, summer sowing 90 days, plant height 150 cm, density up to 4,000 per 1/15 hectare (1 acre), oil content up to 40% to 45%, yield per 250 hectares 250 About kilograms, spring, summer broadcast, between, sets, complex, single can be.
Second, sowing preparation
(I) Site Preparation before Broadcasting
Deep plowing 20 to 25 cm before sowing. In order to facilitate irrigation and drainage, ridge cultivation should be carried out and the ridge height should be 10 cm. Every 1/15 hectares of earth compost 3000 to 5000 kg, compound fertilizer 50 to 80 kg, potassium sulfate 20 to 30 kg, combined with soil preparation, turned into basal.
(II) Proper sowing and reasonable close planting
In accordance with the principle of "Spring sowing early and summer sowing should be late", the spring sowing film cover, can be sown on March 10-20. Summer sowing is at the end of June and early July.
Seed drying before sowing 1 to 2 days, soaking for 6 to 10 hours, using Fumei dual or carbendazim and other fungicides picking. Seeds coated can be ridged, burrowed or drilled, with one or two holes in one hole or three holes in the ground. The cover soil is 3 centimeters thick, 0.35 to 0.5 kilograms per 1/15 hectare. Before sowing, 48% trifluralin EC 75 to 125 ml, 40 to 50 kg of water sprayed on the soil, then squat, so that the chemicals mixed into the 5 cm soil to inhibit weeds at seedling stage.
The fertile soil on the plains with convenient irrigation and irrigation is 4000 plots per 1/15 hectare, with a typical row spacing of 67 cm, a spacing of 25 cm or a row spacing of 50 cm, and a spacing of 33 cm. 3000 tracts of thin mountainous areas.
Third, field management
(A) Seedlings 1 to 2 pairs of true leaves and time seedlings and make-up seedlings.
(b) The seedlings are generally not watered to facilitate rooting seedlings.
(3) 20 days from budding to flowering, the amount of water used accounts for 50% of the total water use during the whole growth period. This period should be irrigated as appropriate. Before and after budding stage, fertilizer should be applied in a timely manner. Apply 1-15 hectares of urea and potassium sulfate to 10-15 kg each, 15 cm from the neck and 10 cm deep at the ditch. In summer, if the base fertilizer is insufficient or not applied, topdressing should be advanced to the 8 leaf stage, and the amount of fertilizer should be increased.
(4) Foliar application of 0.2% urea solution during flowering and grain filling period. A small amount of tillers and the lower 8 old leaves are promptly removed after flowering to facilitate ventilation and lightening and reduce the source of disease. The self-pollination rate of oil sunflower is only 1%. It must be pollinated by insects or artificial aliens. A box of bees can pollinate 3/15 hectares and the beehive is no more than 100 meters from the ground. If the bee source is insufficient, artificial pollination is required. The pollination period is when the field is above 70% blossom or the single plant flowering is carried out for the first time after pollination and every 3 days thereafter, for a total of 2 or 3 times. The pollination time is from 9 to 12 o'clock in the morning or from 3 to 6 o'clock in the afternoon.
(5) Timely harvest 30 to 35 days after flowering, when the seed coat becomes dark, timely harvest. Premature yield is low, moisture is large, and it is easy to degranulate after too late, and the rat has more harm.
Apalutamide Intermediates
Apalutamide Intermediates,Cas 951753-87-0,Cas 2227589-22-0 Apalutamide Intermediates,Cas 2227589-22-0
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