1, a wet fresh untreated seeds sown directly.
2, the spring sowing, the seeds should be soaked in warm dry 43 degrees in two days, and then mixed wet sand (sand humidity hand clenched into a group dispersed, but no drop out for good. Too dry stratification is not complete, too wet and easy moldy seeds.), at low temperatures the product layer of 1-5 degrees for 30 days, once a week to check the moisture of sand, proper mixing of the inner layer of the outer layer of dry and proper hydration. Avoid over-done wet. Liezui about 30% of the seeds can be planted.
3, the use of natural stratification were autumn, the seeds were sown in December-January before late autumn, next spring emergence.
Establish two meters wide seedbed, dug ditches, loose seedbed, remove large clods, can exert a certain amount of time sorting seedbed seedbed organic fertilizer at the bottom, which will help the late seedling emergence robust growth. Built seedbed can be planted, according to their own conditions to adjust the seeding number, the more beneficial the more sparse seedling but difficult to manage, the more intense the more easy to manage, but seedlings too crowded, easy to wear and tear. Sowing depth of about 1cm appropriate. After sowing irrigated. Shed conducive to build plastic insulation moisture, improve seedling rate. Timely replenishment to maintain a certain humidity seedbed about 15 days .