Stubble seeding rice growth characteristics and cultivation techniques _1343

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Stubble seeding rice growth characteristics and cultivation techniques
 
 
Large. Hair root node of 1.3 reduction in the amount of the distribution of soil more than the upper root, root activity post strong performance,You are not allowed to view links. Register or Login, and throwing rice root system during late aging faster CD, so exhibit strong lodging resistance. 1.4 According to the dynamic characteristics of direct seeding rice tiller, to reasonably determine the planting density, sowing rate can not be too large. Cultivation conditions in every major} 667m penalty to 5kg appropriate seeding rate, tiller early rising rapidly,You are not allowed to view links. Register or Login, a surge to 7-8 leaf stage to spike the seedlings are basically to achieve the desired number of fields at this time should be put control seedlings, to prevent the population is too large, but will reduce the number of post-spike. 2 cultivation techniques using common wheat varieties 2.1 Crops should be selected in the ripening japonica, growth stage suitable both grains, moderate tillering ability, good lodging resistance varieties, it is a good upside in a stable basis for a large spike Sui. 2.2 Dry broadcast requirements applicable to rush in the harvest of wheat, rice sowing grab, and strive to present the end of June i0 planting, in order to facilitate high contention. Sowing Depth lCm left accounted for in order not to reveal seeds suitable, appropriate seeding rate per 667m 4.5 ~ 5kg, each of the basic Yin control 667m from 9 to 10 million. 2.3 Management after sowing immediately after sowing, rinse enough water after sowing 3 (i, no more than 4d will be closed to the use of herbicides chemical control, this time in case of rain, the water should be immediately removed the field area. Field surface roughness Good plots, leaves 1 to 2 in advance to establish the water layer of the heart in order to promote rapid seedling length, 2 leaves l look after the heart of the growth of the seedlings and field flatness, timely chemical control can be combined with application of 2 weaning fat. 2.4 shallow ground irrigation, and promote tiller 4 to 5 leaf stage under growth of the seedlings to promote tillering Shi 1, each about 667m urea l2.5kg; same soil under field conditions with disabilities, put the appropriate fields, to improve soil physical and chemical properties to promote normal plant growth and development. 2.5 see Miao Shi Zhuang Tillering good enough for the direct seeding rice seedling throwing rice bacterial leaf age than the earlier Received: 2009 ... 0727-52 individual and groups of a time before and after the 9 leaf should be based on leaf color and amount of topdressing strong group dynamics tillering, generally about every 667m lOkg with urea in shallow water slurry management adhere to rigid boards. 2.6 to promote security into account, good facilities in the Age of the remainder of panicle 3 to 3. 5 leaves a good look at Tony Shi spikelet promotion, generally every 667m cable with the urine of about 8kg, more than the number of leaf age from 1 to 1.5 leaves, see Miao good amount of protection applied fertilizers. the general use of urea per 667m 4kg, Daejeon still hard board humid as well, but not every time after irrigation water before the water adhere to enhance root activity, to ensure that decreases in the tillering stage and flowering is not affected by the drought, the harvest before the l week without water. 3 Comprehensive Control of insect pest occurrence and 3.1 seeded rice 3.1.1 Characteristics of pest control disease. in recent years in direct seeding rice cultivation process, according to a large area east of the town of observation,You are not allowed to view links. Register or Login, direct seeding rice sheath blight incidence and damage levels, and light on seedling throwing later than rice and machine transplanted rice. In particular stripe on the seedling throwing rice widespread, and less occurrence of direct seeding rice. blast had occurred between the year and species differences in seedling plots in some years can be in a few see also occurred some years later, but live on the overall incidence of rice to a lesser extent. 3.1.2 pests. weevil rice seedlings occurred in a few plots to the main emphasis on the old crop new crop. Rice Longitudinal pre-seeding rice leaf roller as small individual damage is not heavy, late groups increased emphasis on the early damage in the prevention and treatment can not be ignored. planthoppers occurrence and hazard light on seedling throwing rice,You are not allowed to view links. Register or Login, rice may be related to individual development and live Throwing rice development trend of weaker groups concerned. 3.1.3 live because of the occurrence of rice pests in different parts of the grass in different farming systems, there may be changes should be based on forecasting the situation around the worm grass treated differently. 3.2 free chemical control field closures 3. 2.1 rests in the bud after sowing, after sowing within 3 ~ 4d chemical control, method of 50% per 667m butachlor EC 300 ~ 400mL, feeling the grass between the plots because of the large differences, on the grass large amount, more than the dose limit is appropriate, generally up to 9O% control efficiency or more. 3222 l leaves the heart of the situation when the number under the leather and the size of leaf age, with 36% each 667m section Dichloro-WP 60 ~ 90g,You are not allowed to view links. Register or Login, Dry fields and water treatment front, the next day after the drug rehabilitation of water, keep the water level of not less than 6d; such as barnyard grass to the main ring can be 50% of the quinolinic acid dichloride WP 5O ~ 75g, results in 90 % or more. 32.3 Live occurrence of rice mixed Ge concentration of heavy grass conditions. grass-phase complex, but in general there are two peaks out of grass, weeds after planting concentrated in the 6 ~ l5d, focused on broad-leaved weeds after sowing 8 ~ 20d, so make good use of herbicides suitable time period, after the drug effect is the key to improving the general plots to the grass situation is not heavy, the grass is not complicated plots phase, based on the film in a laugh, but also to achieve better control effects.