How many seeds does a general transplanter need to transplant a mu of rice seedlings? What are the key points of seedling raising techniques?

Mechanical transplanting of rice seedlings is based on double-film seedling raising or soft disk seedling raising technology to cultivate blanket seedlings with soil, and the seedlings with soil are cut by the transplanter to realize seedling division and transplanting, that is, standardized seedling raising + fine soil preparation + mechanized transplanting. So how many seeds does an ordinary transplanter need to transplant seedlings per mu? What are the key points of seedling raising techniques?

How many seeds does a general transplanter need to transplant a mu of rice seedlings?

It is learned from Uncle Wang, a rice grower in Hunan, that the cross is 16-18 plates per mu, 1.2 kg.

The characteristics of rice blanket seedling tray are as follows: carrying rice with nutrients, no slow seedling stage, high survival rate, long growth period, obvious yield increase (about 15% in cold areas), good quality and good taste of rice; through quantitative positioning sowing, save seed cost by more than 70% compared with conventional sowing It can effectively solve the problems of large sowing amount, high seedling leakage rate, poor seedling quality, serious root injury, slow return to green, short growth period and uneven transplanting. Compared with the ordinary transplanting, the pot transplanting technique is limited by the time of transplanting seedlings, the elasticity of seedling age is larger, the panicle grain is larger and more, and the labor intensity of field nursing is greatly reduced. Compared with the ordinary rice seedlings, because the seedling of the bowl is planted under the condition of shallow tillage, it can be seen that the growth of the seedling is strong and the root is much stronger after a week. After transplanting seedlings for a month, all the roots and plants of the bowl seedlings were opened. Because each seedling even the root is fully bathed in the sun, and the rice already has a strong ability of photosynthesis, this ability is brought into full play by the bowl seedlings, so that the seedlings are healthier. In addition, because the roots of rice blanket seedlings are deep and firm, the stems of rice seedlings are stout, so the lodging resistance is also very strong, the number of rice ears is more, and the shape is fuller.

What are the main technical points of raising seedlings with transplanter?

In addition to the standardized plastic plate seedling raising technology matched with mechanical transplanting, the open field double film seedling cutting technology can also be adopted. The technology has the advantages of simple facilities, convenient operation, saving investment, reducing cost and so on.

1. Land selection: select fields with high topography, loose and fertile soil, easy drainage and irrigation, flat surface and convenient transplanting of seedlings as seedling fields, and leave enough seedling fields according to 1RV 100.

2. Soil preparation: after the seedling field is leveled, the furrow is made according to the width of 1.8m, the depth of ditch is 25m, the depth of edge ditch is 35cm, the length of border is controlled within 15m, irrigation is checked for 2-3 times, and the difference between height and height does not exceed 3cm. Then cover the border with perforated plastic film.

3. Sowing: the nutrient soil prepared with sifted fine mature soil, rotten organic fertilizer, chemical fertilizer and acid regulating agent was evenly loaded into the plastic film on the border surface, the soil was thick 2cm, and sowing, covering soil, chemical weeding, laying grass and covering film were carried out according to the planned sowing rate.

4. Management: timely uncover the film and irrigation to protect the seedlings when the seedlings have one leaf and one heart, keep the soil moist before finishing the seedlings, protect the seedlings with thin water at the stage of 2 leaves, and manage the wet roots after 3 leaves; rational use of fertilizer, 40% of base fertilizer, 20% of weaning fertilizer and 40% of getting up fertilizer; at the same time, do a good job in the prevention and control of diseases, pests and weeds.

5. Seedling age: be sure to finish planting before 4 leaves.