The "five precautions" should be done well in the later stage of growing rice.

When rice enters the late growth stage, it is a critical moment for the formation of yield, and we must do a good job of the following "five precautions".

1. For the fields with no nitrogen fertilizer in the middle stage and premature senescence in the later stage, 2kg urea per mu can be applied as break fertilizer in the break period. For those with normal and healthy growth, foliar fertilizer was applied once at the initial heading stage and full heading stage respectively, and 150 grams of potassium dihydrogen phosphate plus 0.5 kg of urea per mu was sprayed on the leaves after 5: 00 p. M. on a sunny day. For those with excessive growth, 0.2-0.3 kg of rice vinegar and 1 kg of superphosphate per mu were sprayed with 50 kg of water at break stage, initial heading stage and filling stage.

2. The temperature of anti-"sticking" rice drops during heading stage, and sometimes it is cold and dewy and windy, so it is difficult to heading and neck sticking occurs. Timely spraying "920" can prevent the phenomenon of "stuck neck", and has an obvious effect on increasing production. Generally use "920" 1.5 grams per mu combined with 250 grams of potassium dihydrogen phosphate 300 grams to water 50 kilograms 60 kilograms, in the break heading 50% 60% spray.

3. Strictly guard against the cold dew wind of Cold Dew has a great influence on the growth of rice, so we must guard against it. ① increased plant ash or foliar spraying potassium dihydrogen phosphate 2-3 days before the cold dew wind to enhance the cold resistance of the plant. ② sprayed 20ppm's "920" solution on the panicle a few days before the cold dew wind appeared to promote the early heading of the seedlings. When the ③ cold dew wind comes, the field is irrigated to maintain a 7 cm deep water layer to keep warm. After the cold dew wind of ④, the leaves of rice plants with full heading were sprayed with potassium dihydrogen phosphate.

4. the water pipe is an important link in the later stage of preventing excessive irrigation of rice, so avoid excessive irrigation. Generally heading and flowering stage irrigation 5-6 cm deep water layer, so that there is water heading, or adopt the irrigation method of day irrigation and night drainage. After heading, the irrigation method of dry-dry-wet-wet and dry-wet alternately was adopted. Water should be cut off 7-10 days before rice harvest to promote maturity, but it should not be cut off prematurely.

5. Pest-control rice is vulnerable to rice planthopper, panicle neck blast, sheath blight and other diseases and pests in the later stage. If it is not controlled in time, the harvest will be seriously affected. Rice planthopper and other pests can be controlled by aldicarb and cicada powder, ear and neck blast can be controlled by tricyclazole, and sheath blight can be controlled by Jinggangmycin.