Romania interior door, PVC Door MDF Door Glass Door Wood Door Wooden Door, China Romania interior door ZHEJIANG HONGTUO INDUSTRIAL CO., LTD. , http://www.hongtuodoor.com
Since the main flood season this year, the southern part of China has been hit by heavy rains. Among them, the middle and lower reaches of the Yangtze River in Jiangxi, Hunan, Hubei, Anhui, etc. are the main rice producing areas in China, and rice production has been affected. On August 8, the reporter interviewed Liao Xiyuan, head of the rice expert guidance group of the Ministry of Agriculture and deputy director of the China Rice Research Institute, on issues such as post-disaster management in the southern rice region.
According to Liao Xiyuan's analysis, from April to June this year, the middle and lower reaches of the Yangtze River have been exposed to low temperature and low temperature for a long time. The growth and development of early rice is slow and mature, resulting in a delay of 7-10 days in the double-season late rice transplanting period, which leads to the extension of late rice age and the splitting of seedlings. The capacity is reduced, the number of tillers is reduced, and at the same time, the growth period of late rice is delayed, and the risk of “cold wind†is increased during the heading period.
To this end, he suggested that the base fertilizer and tiller fertilizer should be increased to 80%, and the panicle fertilizer to 20%; after transplanting seedlings, 5-7 kg of urea per acre would be used to promote early tillering; control of nitrogen fertilizer dosage and increase of phosphorus and potassium dosage. To achieve shallow water irrigation, dry and wet, and promote the stable growth of rice; see the seedlings in the heading and flowering application of granular fertilizer, generally apply 2-3 kg of urea per mu, or spray potassium dihydrogen phosphate, "grain full", etc. Foliar fertilizer to prevent premature aging, promote grouting, and increase grain weight.
“The degree of hazard of rice after flooding is closely related to the growth period when flooded, the length of flooding, and the depth of the water layer.†Liao Xiyuan told the reporter that “the current southern continuous cropping rice is in the tillering stage, and it is highly resistant to cockroaches. Generally, flooding for 4-5 days, although delaying the growth and development process, as long as careful management, has little effect on the later yield. However, northern rice and southern mid-season rice are at the heading stage, and the tolerance to mites is very weak. 2 days, after the water is returned, the flower can still bloom, and some of it can be strong; if it is submerged for more than 3 days, the pollen and anther are destroyed. Although it can bloom but cannot be pollinated, the ear of rice will die dry and lead to death. in the following rice, as long as the light is not easy to pull off pull rice plants, although growing impact on rice, but the impact to a lesser extent, after the withdrawal of water such as strengthening the management can still get a higher yield.
Liao Xiyuan proposed that for rice with less flooding and flooding, it should increase the management of the field and strive for a bumper harvest.
Grab the water, wash the seedlings and help the plants. If it is cloudy, the paddy fields can be drained once; in case of hot weather in the hot sun, the water should not be drained at one time, and the appropriate water layer must be retained to prevent water loss and dryness. During the drainage process, the rice plant can be shaken back and forth with bamboo rafts, the sediment of the contaminated stems and leaves is washed away, and the rice plants are righted up. After the rice plants are restored to life, they should adhere to the dry and wet irrigation method to ensure the physiological and ecological water requirements of the rice plants and to ensure soil ventilation.
Foliar topdressing, seedlings and spikes. During the flooding of rice plants, the vegetative organs are damaged to varying degrees. Foliar topdressing should be carried out to prevent premature senescence of leaves, promote flower preservation and ear protection, and achieve the goal of increasing grain weight and ensuring yield. The specific method is: 2-3 days after draining, apply 2-3 kg of urea per acre, and use 100-150 g of potassium dihydrogen phosphate, spray 1-2 times on 50 kg of water, or spray with Ai Miao. 1 time.
Liao Xiyuan also reminded the majority of rice farmers that they were flooded with rice, the quality of plants decreased, and the disease resistance was weakened. In addition to high temperature and high humidity, spikes and sheath blight were particularly prone to occur, and prevention and control should be strengthened to reduce losses. Prevention and control of panicle neck sputum, 20-30 grams of tricyclazole wettable powder per acre, or 40% of Fujitsu 1 (also known as rice bran) emulsifiable concentrate 30-45 ml spray 50 kg of water; 25-40 grams of 20% Jinggangmycin suspension can be used per acre, or 50 kilograms of water can be sprayed with 12.5 wells, wax buds 50-75 ml. In addition, the leaves in the lower part of the flooded rice plants are prone to decay, and the prevention of bacterial base rot is also to be strengthened.
Total 1 | <First <Prev 1 Next> Last> |
share to: