At present, rice in the county has gradually entered the jointing and long-earning stage, which is a key stage of strong roots, strong rods and large ears. According to the seedling station of the county planting station on August 29, the leaf age of the hand-planted rice is 15~16 leaves, the number of stems is 24~260,000; the leaf of rice leaves is 13~15 leaves, and the number of stems is 25~280,000. Some of the earlier fields were slower due to the delay of the field, and the population was too large; some of the late transplanted machines were transplanted, because of the over-aged planting, the dead seedlings were not found, and the population was insufficient; the live-leaved rice leaves were 11~14 leaves, and the number of stems 34~420,000. In view of the current complex rice seedlings, it is necessary to adapt to the cultivation of seedlings, to manage the fields, to stabilize and strengthen the target of large ears, to strengthen the field management of rice in the late stage, and to lay a good foundation for high yield of rice.
First, we must strengthen water management and optimize the quality of the group. According to different planting methods and different seedlings, we should do a good job of classified management. For the large population of the field, the field should be put on the field before the ear differentiation period, and the population should be re-scheduled to optimize the quality of the group. For the moderately-sized field, the light field will continue to be implemented before the leaf color is obviously faded. After the water, keep dry and wet alternately, promote root development; for some late-casting, late insertion and other stems with insufficient number of stems and heavy pests, 3~5 kg of urea plus zinc and potassium fertilizer can be added. The fertilizer is lightly placed on the field to promote the transformation of the seedlings. For the straw returning field, the water slurry management in the middle and late stages should be combined with the seedlings to prevent the group from rebounding and the soil softening after rehydration. In addition to the establishment of the water layer at the booting stage and the heading and flowering stage, the other stages are mainly dry and wet alternate and intermittent irrigation to ensure the coordination of soil, water and gas during the ear differentiation stage, improve the root activity and leaf photosynthetic function of the heading stage, and improve the later stage group. The dry matter production capacity is not broken until about one week before harvesting. Advocate timely harvesting to prevent premature harvesting and impact on rice yield.
The second is the scientific application of ear grain fertilizer, attacking large ears and multiple grains. Spike fertilizer is the most important fertilizer in rice life, and it is an important technical measure to promote the differentiation of young panicles, attack large spikes and increase the number of grains. According to the rice seedling condition and the leaf color fading condition, the ear grain fertilizer was applied in an appropriate amount. After the leaf color is faded (the inverted 4 leaf color is lighter than the inverted 3 leaf color), the booting fertilizer is applied in time. Urea is applied 10 to 15 kg per acre and 5 kg of potassium chloride. If the leaf color does not fade, you can postpone the top dressing and reduce the amount of topdressing after the leaf color fades. If the total number of stems is insufficient, topdressing should be carried out in advance to increase the tillering rate and increase the number of kernels. The direct seeding field with insufficient stems and stalks should also be used in the early stage of jointing to timely apply the jointing panicle fertilizer, increase the rate of ear formation and promote the formation of large ears. For the field where the straw is returned to the field and the nitrogen fertilizer is used in the early stage, the amount of the ear fertilizer should be appropriately reduced. In addition, during the filling of rice, it is necessary to do a good job of foliar spray fertilizer to prolong and improve the photosynthetic capacity of the leaves.
The third is to strengthen the prevention and control of major pests and diseases and reduce production losses. It is necessary to attach great importance to the occurrence and damage of late stage pests and diseases such as rice leaf roller, white backed planthopper, brown planthopper, sheath blight and rice blast. According to the forecast and forecast of the plant protection department, the unified defense rule should be carried out in time. It is necessary to adhere to scientific prevention and control strategies, vigorously promote high-efficiency and safe-to-use drugs, improve prevention and control effects, and reduce production losses.
Fourth, the current field that is not suitable for the rice paddy system should continue to clean up and dredge the three ditch inside and outside the farmland to ensure that it can discharge energy and improve the ability to resist disasters.
Led Integrated Emergency Device
Led Lamp Automatic Emergency Device,Led Automatic Emergency Device,Led Emergency Device,Led Light Emergency Device,Emergency Driver For Led Lights
Foshan Nai An Lighting Electric Co.,ltd , https://www.emballast.com