Opinions on the management of rice in the early and middle stages of this year

I. characteristics of rice production this year

The main results are as follows: 1. the machine planting area is large and the planting quality is high.

According to the report of each town, the machine planting area of the whole city is 173500 mu, accounting for 81% of the rice area, the planting density is high, the lack of broken ridges is less, and the basic seedlings are suitable. Information on Miao feelings: the average number of holes per mu in the city was 17300, an increase of 1200 holes or 7.5% over last year's 16100; the average basic seedling was 70700, an increase of 19200 or 33.2% over the previous year's 57700.

2. The transplanting period is suitable, and the seedlings of living trees can grow quickly.

Mechanical transplanting of rice seedlings in the city basically ended on June 25, ensuring a suitable transplanting period. After planting, live trees grew quickly. By July 5, the average number of seedlings per mu in the city was 134300, an increase of 65400 or 25.2% over the same period last year. Therefore, the overall transplanting period of rice production this year is suitable, the planting quality is high, the seedlings grow quickly, and the seedling condition is good at present.

However, we should also see the existing problems and weak links: first, there are many varieties, especially Wujing and Changnongjing have a large planting area in the first year of this year, and they are not very familiar with the characteristics of varieties; second, the base number of diseases and insect pests is high, especially in some fields of stripe blight; third, the imbalance is large, early planting and early growing fields are likely to cause too large population; late planting, few tillers and slow seedling emergence Fourth, individual large grain growers, the sowing time of direct seeding rice is seriously out of season, and one-sidedly thinks that when sowing in early July, the grass yield is not low.

Second, reasonable regulation and control due to seedling management.

1. Apply sufficient tiller fertilizer

According to the growth characteristics of mechanized transplanting, in principle, 11-12 kg per mu of pure nitrogen should be applied in the early stage, especially in the field of transplanting seedlings in Baishui, the second tillering fertilizer should be applied comprehensively to promote tillering and seedling development.

2. due to seedling management, reasonable regulation and control

For the early planting and early development field, the field should be lightly abandoned in time, and the population should be controlled when the number of seedlings per mu reaches more than 200000, and the peak seedling should be controlled by 27-280000; for the mechanically transplanted seedling field that has not been dehydrated in the late planting and late field, it is necessary to dehydrate before using medicine. on the basis of dewatering, shallow water promotes tillering. The first light planting should be carried out in a large area of mechanized transplanting seedling field after July 15 to ensure a reasonable population and improve the panicle rate.

3. Adhere to the secondary division.

Around July 10, the second chemical removal of mechanically planted seedling fields was carried out in an all-round way, with 30 grams of "long ploughing" per mu to control grass damage.

4. Fertilization of hybrid japonica rice should be finished early.

The total amount of nitrogen fertilizer should be controlled at 17-18 kg of pure nitrogen, and fertilization should be finished early around July 10 to improve the seed setting rate and prevent lodging.