5 Keys to Rice Field Management

1. Promote tillering
In June, the focus of field management is to promote tillering of rice. The first and mid-June is the peak period of tillering of rice. Scientific management is the key to promoting effective tillering and achieving high yield.
(1) The shallow water layer promotes growth, and the water layer remains 3-5 cm, but cannot be without water. Including fertilization and weed control, do not use deep water in the field. The weed control effect of deep water is not good, and it also inhibits tillering.
(2) Reasonable fertilization to promote tillering.

2. Secondary closed weeding
After the rice seedlings are completely turned green, the second closed weeding should be carried out in time to avoid grass shortage. The water layer should not submerge the rice heart, and do not apply medicine when the temperature is extremely low, so as to avoid phytotoxicity.

3. Pest control
Early June is the time when the leafminer larvae harm the rice seedlings. It is recommended that the insecticides with systemic effect must be selected for the control of leafminers.
The control of leafminer should be carried out with pyridoxine or Aijiangle before transplanting, and it is best to spray the medicine again before the algae water after transplanting. (The water layer should not be too deep)

4. Sun drying
After June 20, when the tiller number in the field reaches 80% of the expected number, the field can be drained and dried. Sun drying can control ineffective tillers, enhance root vigor, accumulate nutrients, and provide early stage of rice ear differentiation.
more source of nutrients.
It is best to dry the fields for 5-7 days, until there are cracks in the fields. When 1/3 of the plants in the field have been jointed, the field should be stopped and normal water management should be carried out to ensure the differentiation and growth of young ears.

5. Prevention of tube leaf seedlings
After the rice seedlings are transplanted to the paddy fields, some rice seedlings have cylindrical leaves, and the heart leaves are difficult to arch out, which affects the growth and booting, and will cause different degrees of rice yield reduction. Most of the cylindrical leaf seedlings are caused by the use of hormone products in the seedling stage, and some are caused by the use of hormone drugs after transplanting. Generally there are the following situations:
(1) Tube-shaped leaves appear when the rice leaves are 6 to 7 leaves, most of which are caused by multiple or excessive use of naphthalene acetic acid rooting agent around 3 leaves of rice seedlings.
(2) Tube-shaped leaves appear when the rice leaves are 7-8, most of which are caused by the use of "2·4 D" as the base drug.
(3) The tube-shaped leaves that appear at the 5-6 leaf stage of rice may also be caused by 2.4 D herbicides in the base medicine, and the large amount and water depth cause phytotoxicity!
(4) If quinclorac is used on rice seedbeds or 2.5 leaves before, tube-shaped leaf rice seedlings may also appear.
(5) If there are many tube-shaped leaves of rice seedlings in the pond edge of the paddy field, it may be the phytotoxicity caused by the drift of the bottom drug 2.4 D to the edges and corners.
Solution:
It can increase the application of quick-acting nitrogen fertilizer (crystal sulfuric acid dumpling) and zinc fertilizer to promote the division of sin, increase the whole ear and reduce the loss. It is also possible to apply ammonia co-acid trace element poisonous water-soluble fertilizer or only foliar fertilizer plus brassinolide to promote growth and rapid tillering.
If there is an occasional tubular leaf, you can leave it alone, and there will be no more tillers, which will not cause serious yield reduction.