How to save rice that has been ravaged by heavy rain?

Accurate judgment, classification guidance

Due to the difference in the length of the inundation and the rice growth period, the flood damage to the rice plant is also different. Therefore, different measures are taken to make up for disaster losses. The situation is that it is washed away by floods, severely lodging, the rice plants are yellow, the roots are rotten and stinky, and the aphid buds cannot germinate and the elongated plots should be replanted in time. The second case is that after more than one day of inundation or more than 10 hours of ingestion at the booting stage, the rice plant is abnormally fertile. According to the following identification method, it is determined whether the seedlings are replenished and flooded with reclaimed rice: 3 days after the flood recedes, the most important leaves in the morning The tip of the leaf does not hang "dew beads", but the growth of the root system is basically normal, but it can not be properly raised and sturdy. It indicates that the aboveground part of the rice plant is seriously damaged, and the seedlings should be transplanted to regenerate the flooded rice; the rice ear is stripped and the rice ear is present. Water-soaked, turned yellow-brown, and began to rot and smell, indicating that the rice ear has been suffocated, although the stems and leaves of the rice plant are green and erect, but can not be stalked. The seedlings should be harvested and flooded with reclaimed rice. Five days after the flood subsided, the germination of the liquid buds was stripped. If the whole planted rice plants had about 80% of the axillary buds in the third, fourth and fifth nodes, the stems were highlighted. Seriously damaged, the growth center is transferred, and the seedlings should be kept to regenerate the flooded rice. The third case is that within 1 day of flooding or the growth period of rice plants at the beginning of young ear formation and the field where grain filling has begun, it is necessary to strengthen the field tube and reduce losses.

Key Techniques for Seedling Retention and Flood Regeneration Rice

1. See the time for germination and cutting. Rice is flooded and usually grows for about 3 days. After that, the growth center gradually shifts, and the base axillary buds begin to germinate. After 5 days, the plantings are significantly elongated. Therefore, the seedlings that have been flooded and reclaimed rice are flooded for about 1 day. In the field, it takes about 1 week to cut the seedlings after the water is returned, and it takes 3-5 days to be flooded for more than 2 days.

2. Set the pile height according to the growth process of the mid-season rice. The height of the piles retained by the seedlings and reclaimed floods is 5-7 inches. The height of the piles that are late in the growth period should be lower, and the growth period should be higher.

3. Timely topdressing. After the rice plants are submerged by water, photosynthesis is blocked, nutrient consumption is large, roots are weakly absorbed, and nutrients must be replenished in time. Topdressing should be carried out on the day of cutting seedlings or within 1-2 days after cutting seedlings, applying 10-15 kg of urea or 40 kg of special compound fertilizer for rice.

In addition, after cutting the seedlings, the cut straw should be evenly placed between the rows, which can effectively inhibit the weeds in the rice fields, and increase the organic fertilizer to the rice fields, which is conducive to the high yield of the reclaimed rice. 4. Strengthen field management. The freshwater layer should be maintained in the field after cutting. When approaching the heading stage of flood reclaimed rice, it is necessary to properly close the deep water to prevent high temperature hazards. During the growth of flooded rice, the plants are green and extremely vulnerable to pests and diseases. Especially in the middle and late August, we will treat three generations of aphids, rice aphids and sheath blight.

General points of management of affected fields

The disaster is lighter and there is no need to cut the seedlings to accumulate the fields of flood reclaimed rice.

First, water is washed back in time to wash the rice leaves to restore photosynthesis of rice leaves.

Second, after the rice fields are flooded, the rice is prone to bacterial brown streak disease, and bacterial blight may also appear. After washing the rice leaves, it should be sprayed with agricultural streptomycin 500-600 times.

The third is to do a good job in the prevention and control of pests in the middle and late stages of rice, and combine the pest control to do a good job of topdressing and rooting. The fourth is to plan the field where the reclaimed rice is stored, and to properly apply the bud-promoting fertilizer and the bud harvesting season. After the rice is flooded, due to the decrease of seed setting rate and 1000-grain weight, the regeneration buds are germinated and germinated. According to the elongation of the buds, the two seasons should be taken into consideration, and the harvest should be timely, the rice piles should be kept high, and the second buds should be retained.

The fourth is to timely replenish the species. It is necessary to promptly replant the crops that need to be replanted, such as red peony, artichoke, autumn soybean, and vegetables. The red dragonfly should use the tipping part of the transplanting as much as possible, and retain more than 5 nodes, and enter the 3 festivals to achieve early and early competition, and capture the high yield of red dragonfly.

(Original title: How to remedy rice after the rainstorm?)