How to select the seed of POA pratensis? What are the methods of raising seedlings?

Precocious grass has rapid propagation of rhizome, attractive leaf color, long green period and good ornamental effect. it can be used for greening, sports lawn, golf tee and fairway. Because of its good characteristics, Kentucky bluegrass has become a commonly used lawn planting species all over the world. One turf can be used for many years and has a wide range of applications. So how to choose Kentucky bluegrass? What are the methods of raising seedlings? Let's get to know it.

How to select the seed of POA pratensis?

The selection of improved varieties is the key to the success of planting Kentucky bluegrass. In terms of seeds, the requirements can not be dormant, and the activity of seeds must also meet a higher requirement, in the selection, avoid those who are irregular or notched. In terms of varieties, there are more than 200 varieties of Kentucky bluegrass, which are mainly divided into Kentucky bluegrass and forage Kentucky bluegrass, so Kentucky bluegrass or Kentucky bluegrass can be selected according to the actual planting demand.

What are the methods of raising seedlings?

1. Land selection and preparation

The soil with good drainage, loose texture and rich organic matter is selected to grow more vigorously on the soil containing limestone, and the most suitable pH value is 6-7. The ground should be carefully prepared before sowing and all debris on the flat bed should be removed. Level the ground, apply base fertilizer and rotten organic fertilizer 22.5~37.5t/hm2, and irrigate in advance 1-2 days before sowing.

2. Sowing and raising seedlings

Kentucky bluegrass generally use seed sowing, strip sowing, sowing can be, sowing amount of 1520 grams / square meter is appropriate. In order to sow evenly, separate the seeds according to the number of plots divided according to the predetermined sowing amount, sow the seeds according to the blocks, and gently rake the seeds into the soil with a rake after sowing. The covering soil should be shallow and not exposed. As the seeds are small, the depth of soil cover should not exceed 0.5 cm.

3. Post-broadcast management

After sowing, the soil should always be kept moist to facilitate seed germination, and weeds should be removed frequently. When the seedlings grow to 5~6cm, the amount of chemical fertilizer (nitrogen fertilizer) can be applied to 5g/m2. If Kentucky bluegrass grows for a long time, it is easy to appear grass cushion, which affects the infiltration of water and fertilizer and the circulation of air, which leads to the gradual degradation of the lawn, then the vertical cutting machine can be used to solve the problem.

4. Pruning at seedling stage

After precocious grass seedlings grow out, due to the different growth and development of each plant, it will naturally grow different. For the beauty of the lawn, it needs daily pruning. When trimming, try to make the lawn look highly consistent, try to trim from the top, control the speed of scissors when pruning, and avoid affecting the efficiency of pruning too fast or too slow.

The above is the introduction of the selection and breeding techniques of Kentucky bluegrass, which can also be mixed with other varieties in different environmental areas. It can not only adapt to the local environment, but also improve the survival rate of precocious grass.

With regard to the wonderful pictures and articles and popular comments on seed selection and seedling cultivation of Kentucky bluegrass, you may be interested in the following recommended contents of Nongxun. Welcome to read.

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