Late cultivation of high-yielding cultivation techniques for super rice

First, timely planting or planting to seize the high yield of late super rice, in the premise of nurturing a strong body, must be early planting or planting, early management, in order to win high yield. According to practice, the late harvest must be planted or planted before the "Every Day" (ie August 7th). Second, rational close planting per acre planting or planting 1.8-2.0 Vanke, planting specifications of 21.7 cm 16.7 cm or 20 cm 16.7 cm, high fertility rice field mu transplant number can be less, low fertility rice field transplantation can be more . Pull out the number of seedlings planted per acre, insert 3-4 seedlings per line of conventional rice, three seedlings of tillers above the hybrid rice band, insert one seedling for each branch, and insert two seedlings for each branch below two tillers. Require qualified planting seedlings and insert them evenly. Take the transplanting to ensure that the seedlings are evenly distributed. Each field can be thrown twice. That is to say, throw 60%-70% of the seedlings in this field and throw them one at a time, and then throw the rest into sparse places. Uniform. After throwing, Tian stayed in the middle of the work line and made up the seedlings in the work line to sparse places. Third, Datian management (a) fertilization principles and proportions. During the whole growth period of Honda, the pure nitrogen of Mushi is calculated on the basis of the fertility yield (that is, no cultivation yield of nitrogen fertilizer), and 5 (0.5) kilograms of pure nitrogen should be applied for every 100 kilograms of rice produced. For example, if the fertility yield per mu is 350 kg, and the cultivation target yield is 600 kg, then the pure nitrogen production per mu will be 12.5 kg. Take the pre-quantification, according to the change of leaf color in the middle and later period, the seedling looks long, and the weather condition can Make Up for the fertilizer as appropriate. Nitrogen fertilization application rate of nitrogen applied in different growth stages: The amount of nitrogen applied in the previous period (including basal fertilization and returning green manure and tillering manure) accounted for 70%-75% of the total nitrogen applied in the whole growth period, and 20%-25% in the middle period, and the later stage. About 5% or not. The proportion of nitrogen applied in the early stage of late planting may be less, and the proportion of nitrogen applied in the middle and late stages may be appropriately increased. The proportion of nitrogen applied in the mid-lowland fertile soil block is larger in the early stage, and the proportion of nitrogen applied in the middle and late stages is smaller. The proportion of nitrogen applied in the early stage of the highland force field is correspondingly reduced, and the proportion of nitrogen applied in the middle and later stages is correspondingly increased. The fertilization of Honda is based on the principle of N, P and K combined application, and the ratio of N, P2O5 and K2O is 1:0.3-0.5:0.8-1. Phosphate fertilizer 70% for surface fertilizer, 30% retained for the middle and late hedge; Potash ratio: the early (including base fertilizer, Huiqing manure, tiller manure), potassium application of total potassium applied 50%, in the late 50%. Basal fertilizer should emphasize the application of organic fertilizer, and it must be applied with 500 kg of mu fertilizer or home fertilizer to cultivate fertility. (B) pre-management. The early period refers to the period from planting to the seedling stage, requiring the seedlings to grow quickly and steadily as early as possible after transplanting, and reach sufficient seedlings in due course. After 15 days of planting in the evening, the mu was required to reach 220,000 seedlings or more. 1 The amount of nitrogen applied in the early stage was combined with the application of phosphorus and potassium. Apply basal fertilizer, scientifically apply back green manure and tiller manure. 2 moisture management. To throw muddy water and promote the delivery of muddy water, in case of rainy weather after throwing muddy water, it should be drained to focus on open field, and promote new births. 3 disease, insects, grass, rodent control. Before killing the earthworms, we uniformly organized and killed poisonous voles and snails (0.5 kg per mu), combined with the first application of herbicides, topdressing with 60-80 grams of butyl, or 35 grams of Inaba. During the period of delivery, Kongxinmycin was used to control sheath blight, and Mu was used to spray 250 kg of Jinggangmycin and 100 kg of water. Pay attention to the control of rice stem borers and rice leafworms. (C) Mid-term management, medium-term management objectives: to achieve strong spikes and strong stems, increase the percentage of spikes, increase the number of effective panicles, and create conditions to differentiate and promote large ear and multiple grains; to promote the differentiation of the spikelets, reduce the degradation, increase the grain size per panicle number. 1 Sufficient seedling supplement long thick fertilizer. In the late stage of 15 days after transplanting, when the paddy field reaches the number of basic mu seedlings of 220,000, long-term coarse fat should be supplemented. Take more exposure to light, promote deep rooting, increase resistance, prevent lodging, and control the production of invalid birth. The Mu Miao Feng is controlled at about 350,000 and the spike rate is over 60%. This ensures that there are enough effective panicles to lay the basis for the panicle number for high yield. In addition, the rice leaves can be transformed to red color before young spike differentiation, and prepare for the application of differentiated fertilizer. 2 Early differentiation of young panicle differentiation fertilizer. In the early stage of young panicle differentiation, 30 days after transplantation, large ear and multiple grains were promoted by increasing differentiation fertilizer. When grasping the dew-curing field, when the leaf color is faded and the sun is clear, timely application of appropriate amount of nitrogen and potassium combined differentiation fertilizer should be applied. If the weather is not good, the application should be postponed or divided. 3 Moisture management and pest control. The early stage of young panicle differentiation returned to shallow water and remained moist after fertilization. Mu fine with 250 grams of Gram-negative + net 10 grams of water sprayed 100 kg, the control of sheath blight and rice planthoppers. And pay attention to control rice leaf roller, bacterial leaf blight and bacterial leaf streak disease. (four) late management. The latter period of management is from the time when the flag leaves are fully grown to mature, and the cultivation and management must avoid excessive nitrogen or premature water shortage to affect the grain filling, protect the leaves with nutrients to prevent premature aging, increase the seed setting rate, and increase the grain weight as the key point. 1 Appropriately apply strong tail fertilizer. During the full heading stage, nitrogen and potassium fertilizers were supplemented, and from the full heading stage, fertilizers were applied once every other week. Each time, potassium dihydrogen phosphate 150 g was used to spray 75 kg of water. 2 Scientific water use. Heading Yanghua irrigated shallow water, and then keep moist, 5-7 days before harvest irrigation horse water, should not be prematurely cut off water, to prevent the late high-temperature forced heat, seedlings early harvest corpses and grain filling is not sufficient to affect production. (e) disease prevention and pest control. During the break period, the heading stage should be sprayed to prevent and control panicle blast, sheath blight, and rice stem borer. After the heading, attention should be paid to the prevention and control of rice planthoppers, so as to avoid wearing through and affecting the yield. Sterilization of pesticides can be used to kill 60 grams of worms or 250 grams of water and 75 kilograms of water. Insects can be sprayed with 90% of insecticidal 40-50 grams or 10% of imidacloprid for 10 grams, or 40 grams of water with 75 grams of water. In the middle and late stages of ripening, we must closely guard against “rice smut disease”, and use 60 grams of new sorghum or 75% of tricyclazole 30 grams to water 60 kilograms.

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