Good planting patterns can bring good benefits. What is the planting pattern of indica rice?

Although the machine transplantation model is advanced, it cannot be widely promoted. For example, machines cannot enter fields with inconvenient transportation in mountainous areas or muddy areas. This condition is a waste of money for farmers, and machine transplanting is only suitable for plain areas. Seedling throwing and transplanting are widely used by farmers. I don't know the data of throwing seedlings in the north. In the south, 95% farmers have adopted the method of throwing seedlings, which saves labor, time and money, and is more than half faster than traditional transplanting. The traditional transplanting mode of facing the loess and facing the sky was eliminated. Unless it is a terrace, deep-water fields can only be transplanted, and seedlings cannot be thrown.

The above is the basic rice planting mode of this topic. You really don't have a clear answer about saving time and money. You can only say that the conditions are limited, and farmers in the country have not yet formed a unified standard rice planting model. Including artificial transplantation and mechanical transplantation. At present, mechanical transplanting is the main way of rice transplanting in Heilongjiang province, and the goal of rice 100% mechanical transplanting has been achieved in Heilongjiang reclamation area. When transplanting rice, due to the early seedling raising process in greenhouse, the effective accumulated temperature of 3-4 leaves can be obtained in greenhouse, and strong seedlings can be used to land in suitable seasons, and even some seedlings can differentiate into the first leaf with the same elongation and tillering on the seedbed. In addition, because there is a growing period of 3-4 leaves when transplanting, the seedlings have more sufficient effective accumulated temperature for heading, filling and maturity after transplanting in the field. Therefore, the transplanted rice has more stable yield, better yield, higher resistance and more outstanding quality. Moreover, transplanting rice seedlings is also the guarantee of rice food security in China.

Dry direct seeding of rice is a new rice cultivation technique popularized in recent years. Includes sowing bud seeds or dry seeds in the field, not establishing water layer before emergence, intermittent irrigation after emergence, and controlling weeds through close planting or stem and leaf treatment. Compared with water direct seeding, dry direct seeding has higher seed consumption, stronger lodging resistance and higher rice yield. However, due to the imperfect mechanical technology of dry direct seeding, there will always be problems of one kind or another. Moreover, once there is heavy rain and soil moisture exceeding the standard in northeast spring, it will affect the sowing date of dry direct seeding rice and directly affect the maturity. Most importantly, at present, the closed herbicides used in dry direct seeding rice are all herbicides used in dry fields, and the risk of phytotoxicity is high. So I suggest you read more stories about dry broadcasting, see specific growth and management measures, and then decide whether to dry broadcast. The vegetative growth at seedling stage is small and the seedling age is short. Seedling-throwing cultivation is carried out in a special plastic floppy disk with high sowing density. With the increase of seedling age, the growth of seedlings is gradually restricted and the elasticity of seedlings is small.

The replanted seedlings in the field turn green quickly, without obvious yellowing, with early tillering, low node position and large number. The rice clumps of seedling-throwing rice are randomly distributed, the plants are loose, the stems are radially upward from the base, the spatial structure of the population is reasonable, and the ventilation and light transmission are good. Strong lodging resistance, uniform lateral distribution of roots, large number of roots per plant, strong vitality and wide topsoil covered by roots. Under the condition of solid and hard soil, the lodging resistance can still be the same as or even stronger than that of hand transplanting. Throwing seedlings can increase production, mainly to grab more ears. Reduce labor intensity and improve work efficiency. Artificial transplanting is heavy physical labor, facing black soil and sky. It is really difficult for a person to transplant more than half an acre a day. And you can throw more than 4.5 acres of seedlings a day.