Rice field has more than N routines

Sundry can control ineffective delivery and consolidate effective delivery. When the rice tiller has reached a certain number of sufficient seedlings, the early tiller can become a panicle, and after the end of the tiller, the panicle cannot be spiked or only spikelets. In the production process, the high-yielding young shoots can be prevented from growing without water and fertilizers and the consumption of nutrients can be reduced, so that the main stem and the Oita can obtain more nutrient supply, and lay a good foundation for the strong culms of the strong culms. .

Sundry can improve the soil environment and enhance root vitality. During the long period of time after transplanting till the field, maintaining a certain water layer on the field surface, resulting in poor ventilation in the plough layer soil, inhibition of aerobic microbial activity; organic matter decomposition is slow, is not conducive to root growth. Through the drying process, the atmosphere can directly enter the tillage layer, so that the permeability in the soil is enhanced, the soil structure is improved, and the oxygen content in the tillage layer is increased. The number of new roots in the field has increased, which has promoted the extension of the root system, expanded the range of root activity, and enhanced the absorption capacity.

Sundry can coordinate vegetative and reproductive growth. Drying the field can reduce the level of nitrogen metabolism, control the rate of vegetative growth, improve carbon metabolism, and promote carbohydrate accumulation. At the same time, internode growth was also inhibited. The lengths of the first and second internodes of the stem base of the rice stem became shorter, the stalk wall became thicker, and the stalk tissue became denser, thereby enhancing the ability of the plant to resist lodging, and also for the differentiation of young panicles of rice. Initially provide more nutrient sources. After rehydration, more carbohydrates were transferred from stems and sheaths to young ears, which promoted the development of young panicles. The transformation of rice from vegetative growth to reproductive growth satisfies the supply of nutrients for growth and development of young panicles. Lay the foundation.

Sun drying can reduce the field temperature and suppress pests and diseases. The occurrence and spread of many diseases and pests of rice are directly related to the temperature and humidity of rice plants. For example, the relative humidity of rice blast in the field above 90% is suitable for the reproduction and invasion of germs. Bacterial blight occurs when the relative humidity in the field is above 70%. The leaves of the rice leafminer and its metamorphosis larvae also require higher humidity conditions when hatching and damaging their eggs. Through drying the fields, the air humidity between the clusters is reduced, the microclimate environment in the field is improved, the propagation conditions of the germs and eggs are disrupted, and the occurrence and harm degree of the pests and diseases are suppressed.

The standard of drying up the field

Drying fields should generally be carried out at the end of the tillering period and the beginning of the jointing period. Premature sun drying affects the production and growth of effective tillers; too late sun drying, new tillers over-prosperous growth, delaying the spike differentiation rate. With medium tillering capacity, 25 to 30 holes per hole should be drained.

The drying time is generally 5 to 10 days. The light drying blocks should be sun-dried to the field surface to open the fine slits, and the foot step should be non-stick mud. In the sun drying field, the sun should be stepped to the step and there should be no footprints. Chicken-claw-shaped cracks; re-sunshine fields, to the sun surface to appear about 2 cm of cracks, to reach the white root exposed, faded leaves, leaves upright.

When about 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 water requirement during the differentiation of young panicles and promote the growth and development of young panicle differentiation. At this point should be properly deep irrigation, control the water layer in 5 to 6 cm.

Dry field needs "five see"

The degree and method of drying up the field depends on the conditions of the soil, fertilization, and the growth of the rice. If there is flexibility, it is necessary to adapt to local conditions, timely, and moderate. The key lies in the “five views”:

See seedlings in the rice field with enough stems, thick leaves, strong growing rice fields to be exposed to the sun and re-sunshine. Instead, they should be exposed to the sun and light sun. The seedlings are generally growing, the number of stems is insufficient, the leaves are not very dark green, and the sun is used. , light or no sun.

Look at the soil field, fertilizer fields, low-lying fields, cold fields should be re-sun, on the contrary, thin fields, Gaogang fields should be light, alkaline heavy fields can be light or not drying. In paddy fields with strong soil leakage, intermittent irrigation methods are generally not needed to dry the fields. When straw is returned to the field, a large amount of organic fertilizer is applied, and rice fields that have undergone a strong reduction must be cultivated in the field. The clay layer should have low water permeability and should be exposed to the sun and sun.

Look at the weather sunny field sunny days, high temperature, evaporation, transpiration, drying time should be short, rainy weather to the sun, the time is longer. Drying requires rapid irrigation and drainage, which can not only thoroughly tan, but also timely irrigation. However, it should be noted that if there is continuous rainfall during the drying season, the drainage should be dredged and the rainwater discharged in a timely manner without water accumulation. When rehydration after drying in the field, it is not suitable for deep irrigation and continuous flooding. Intermittent irrigation should be used to gradually establish a water layer.

See fertile soil field deep, fertile, excessive fertilization should be early sun, re-sun; soil is thin, poor fertilizer retention of water should be late sun, light sun.

Look at the situation of the water source. The field is low-lying, the groundwater level is high, and the drainage is bad. In July and August, the bubbling field must be fielded.

Urine Test Strips 14 Parameters

Measures 14 Different Components of Urine

How To Test?

1. Remove one strip from the bottle and replace the cap immediately.

2. Immerse the reagent area of the strip in the urine specimen and take it out quickly.

3. Wipe off excess urine against the rim of the specimen container.

4. Read the test results carefully within 60 seconds in a good light and with the test area held near the appropriate color chart on the bottle label. Changes in color that appear only along the edges of the test pads or after moving than 2 minutes have passed are of no diagnostic significance. Results with leukocytes test portion can be read within 120 seconds.If reading instrumentally, carefully follow the directions given in the appropriate instrument operating manual

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