The "four insertions" of rice refer to shallow insertion, stable insertion, straight insertion, and even insertion. The "four no insertions" are not inserted into the nest, not inserted into the fist, not inserted into the night, and not inserted into the neck.

First, the "four inserts" shallow insertion, because the temperature in early spring and low soil temperature, the mud surface heating up quickly, good ventilation, easy to split after shallow insertion, is conducive to the formation of large ears, improve production. If it is inserted too deeply, the branching section is in a deep soil layer with poor ventilation, poor nutrient conditions and low temperature. The greening tiller will be delayed, so that the section where the seedlings should not stretch has to be elongated, and the branching section is raised to form "two sections." Roots, this phenomenon not only consumes more nutrients, but each time the branching section is increased, the time of tillering will be delayed by 5-7 days. With the delay of the tillering period, the effective tiller is reduced, and the small spikes are small, which affects the yield. If you insert it firmly, you will not drift the seedlings. If you insert it straight, the leaves will not be covered in the water, the roots will stretch, and there will be no hooks. After inserting evenly, the plant spacing can be uniform and uniform, and the basic number of seedlings per hole is even.

Second, "four does not insert" Do not insert the nest, otherwise easy to float seedlings, hinder the hair; not fists, because the fists are large and easy to float seedlings; do not insert overnight, breathing consumption of body storage and nourishment, overnight cutting After the recovery, the vitality is slow, and the returning to the green is late; if the nest is not inserted, the seedling nest becomes curved, the root can not be stretched downward, the original root loses its effect and re-issuates the new root, and the survival is slow, and the tiller is late, which is not conducive to early birth. .