With the socio-economic development and the transfer of rural labor force, the traditional production mode of manual planting operations restricts the development of double-season rice production. The southern rice region, especially in the mid-lower reaches of the Yangtze River, has the problems of seasonal constraints, poor quality of seedlings, poor machine insertion efficiency, delayed insertion of interplanting and agronomic machinery, and other issues, such as the optimization and collocation of varieties, the development of breeding models, and the narrow lines. The research and integration of key technologies and equipment such as high-speed seedlings, seedlings and seedlings, planting rice seedlings, trenching, precise quantitative fertilization, harvesting of shredded straw in early rice, tracked rotary ploughing, and integrated control of mechanical pests and diseases to achieve double cropping rice Full mechanized production and high productivity and efficiency.

This technical point: 1. Optimization of the mix. Variety selection should be combined with the growth characteristics of machine-planting rice seedlings, and attention should be paid to the reasonable growth of early rice and continuous cropping late rice in order to achieve high yield in both seasons.

2. Mechanical tillage. Before the transplanting of early rice, suitable machinery was chosen for 10 days for plowing, mainly for rotary tilling, supplemented by plowing, and combined with dry rotary tillage and horizontal integration. Combined application of organic fertilizer and calcium magnesium phosphate fertilizer, 1-2 days before transplanting wet rotary ploughing, after the irrigation shallow water leveling, after the soil is settled mechanical transplanting.

3. Focus on parenting. Select the appropriate breeding mode, early rice is recommended for greenhouse cultivation, 25-30 days of age; late rice based on early rice harvest and planting methods to determine the sowing date, machine transplanting age 15-20 days, sowing time from the end of June to early July. Before sowing, the seeds should be sun-dried, awns removed, seed selection, seed soaking and germination, etc. The seedling substrate or soil should be acidified, fertilized and cleared.

4. Reasonably close the machine plug. According to the transplanter and the type of plant, the plant will be densely planted to ensure sufficient seedlings and effective panicles.

5. Rice field machinery ditching, scientific management of water. After the machine is plugged, timely irrigation of shallow water (2-3 cm water layer) should be conducted to protect the seedlings and live trees, and to promote the survival of green seedlings and rooting and standing seedlings. After the returning green seedlings are intermittently irrigated, the water layer should be 2 to 3 centimeters in height, and the field should be properly covered. After the water is dried, it can be used to adjust fertilizers with water, adjust water with water, and promote roots with air, so as to promote early delivery and delivery of childbirth.

6. Accurate quantitative fertilization. According to the target yield of rice and soil fertility in paddy fields, a reasonable amount of fertilization should be formulated to cultivate high-yield groups. Reasonably increase organic fertilizer, reduce nitrogen and potassium.

7. Mechanical pests and diseases. 4 to 5 days after transplanting, use 40% bensulfuron WP wettable powder 60-80 grams, mix fine earth 3-5 kg/mu urea or urea 7.5 kg apply, when spraying, keep the water layer in the field 3-5 cm. According to pest and disease forecast, timely prevention and control of pests and diseases. Large machinery spray technology field mechanical operations.

Note: Pay attention to the reasonable mix of double-season rice transplanting machines and achieve high yield in the double-season machine insertion. Late rice seedlings should be planted according to the characteristics of early rice harvest and late rice varieties, and pay attention to the growth regulation of seedlings with paclobutrazol and other growth regulators.

Vitamin

Vitamins are a type of trace organic substances that humans and animals must obtain from food in order to maintain normal physiological functions. In terms of physiological functions, vitamins are neither a raw material for tissues nor a substance for supplying energy, but they are an indispensable substance for the body. It has many types and different chemical structures. Most of them are the components of the coenzyme (or prosthetic group) of certain enzymes. They are the indispensable compounds for maintaining the normal growth (growth, health, reproduction and production function) of the body. It plays a catalytic role in the body to promote the synthesis and degradation of major nutrients (proteins, fats, carbohydrates, etc.), thereby controlling metabolism. Vitamins are essentially low-molecular organic compounds. They cannot be synthesized in the body, or the amount synthesized is difficult to meet the needs of the body, so they must be supplied from the outside. The daily requirement of vitamins is very small (usually measured in milligrams or micrograms). They are neither a raw material for body tissues nor a substance for energy supply in the body. However, they do not regulate material metabolism, promote growth and development, and maintain physiological functions.

Vitamin K2 MK-7, Vitamin C, Vitamin E, Vitamin K2, Vitamin H, Vitamin D3

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