Look at here! Introduction to the direct seeding technology of rice in dry land and the cause of seedling death in dry raising seedlings

Rice is not only a kind of herbaceous rice, but also the most important and oldest kind of grain in rice. Then the following will introduce the direct seeding technology of rice in dry land and the causes of the death of dry seedlings. The majority of growers have to look carefully.

Rice direct seeding mainly has the characteristics of strong drought tolerance and strong stress resistance. compared with seedling raising and transplanting, rice direct seeding can save nearly 500 cubic meters of water per mu, which can solve the problems of serious drought, serious shortage of water storage in reservoirs and ponds, and can not be planted according to festival. The following is an introduction to rice direct seeding technology:

The main results are as follows: 1. Select the suitable direct seeding field: the anhydrous transplanting field of rice all the year round.

2. Seed drying and medicament soaking: drying seeds in sunny and warm weather for two days to increase the permeability of seed coat and increase water absorption; soak seeds with carbendazim for 2-3 days and sprout until white.

3. Sowing: after soaking the field, it can be sowed until the water is dry until it does not touch its feet, and the method of drawing line width and narrow line point is adopted for direct seeding, with 25000 holes per mu and about 5 grains per hole, so as to ensure the quality of direct seeding and basic seedlings, so as to lay a good foundation for increasing production.

4. Do well the work of seedling, seedling replenishment and weeding.

1. Analysis of the causes of seedling death in dry raising seedlings:

A large area of small seedlings in Midu County is growing well, but there is a phenomenon of dead seedlings in some areas. According to the field investigation and analysis, the main reasons affecting the dead seedlings are:

The main results are as follows: 1. the sowing rate is too high, the population is too large, the nutrient supply is insufficient, and the weak seedlings are prominent.

2. When sowing, there is insufficient bottom water, high air temperature, large soil water evaporation and imbalance between plant water supply and demand.

3. After sowing, the overlying soil is too thick or too shallow, which is not conducive to the growth and development of small seedlings.

4. untimely release of seedlings, too long time of covering plastic film, emergence of high-footed seedlings, poor ontogeny and weak stress resistance of seedlings.

5. The temperature is unstable and the temperature difference between day and night is large, which affects the normal growth and development of small seedlings.

6. Improper management of fertilizer and water after opening the film, too much or too little moisture, early and excessive weaning fertilizer.

2. Solution:

1. Uncover the film and refine the seedlings in time and control the fertilizer and water.

2. Timely prevention and control of green and blight. After opening the film, vinegar water can be sprayed to adjust acid to prevent the occurrence of green and blight disease. Seedling 1-2 leaf stage, each minute with carbendazim 30% water agent 10 ml, mixed with water 10 kg, spray control.