Technical guidelines for field management at rice jointing and longing stage
At present, large-scale rice in the province has entered the jointing and prosperous period one after another. It is a key stage for strong roots, strong rods, scramble for spikes, and attacking spikes. Due to the diversification of rice farming methods, large differences in the placement of key technical measures, and adverse weather conditions in the previous stages, the province's rice seedlings are complex and unbalanced. Mutual polarization in the south of Jiangsu is serious. Planting plantings, plantings, plantings, plantings, plantings, plantings, plantings, plantings, plantings, plantings, plantings, plantings, plantings, plantings, plantings, plantings, plantings, plantings, plantings, plantings, plantings, seedlings, etc. The leaf age was 0.2-0.5 leaves faster than the same period of last year, and the number of stems and stems was 0.5-2.1 thousand per mu. In some of the more severely devastated areas, rice crops that have been replanted have just begun to return green. The overall situation of the seedlings in the Central and Central regions was similar to that of the same period last year. However, there is a large difference between rice plots and the same rice cultivation method. The transplanting and throwing rice with better growth have begun to be jointed. The poorly-seeded direct-seeded rice has only 6-8 leaf leaves, and the number of stems and stems is more than 400,000 per mu and less than 200,000. The overall situation in the Huaibei region was better than the same period of last year. The leaf age was 0.3-1.5 leaves more than that of the same period of last year, and the number of stems and stems was 1.2-3.5 million per mu. In view of complex seedling conditions, various localities should strengthen the guidance of classification, highlight the support for weaknesses and security, implement key field management measures, and promote the balanced development of rice groups.
I. Strengthen water slurry management and build a high quality population
Seize the fine weather and continue to implement the key measures for the field. For the plots with unsatisfactory results of early cropping, large and weak groups, and unobvious faded foliage, we must organize artificial or mechanical trenches and continue to delimit the fields. The effect on the field was good. The leaves had fallen off the yellow field and intermittent wet irrigation was carried out until a shallow water layer was established at the booting stage and the heading and flowering stage. In southern Jiangsu Province, on the basis of supplemental application of reclaimed fertilizer, direct-seeded rice planted with natural disasters due to natural disasters, late-planting rice and late-planting rice plants were planted on the basis of reclaimed fertilizer, and the area was exposed to fertilization and the root activity was enhanced. Speed ​​up the birth process. In the Huaibei and Central Jiangsu regions, hand-planted rice and field plots with poor early shelf-residues and large-scale groups must be appropriately re-instated to control the growth of ineffective tillers. For some plots with late stemming, late planting, late planting and other insufficient stem pods, 5-8 kilograms of urea plus compounded zinc and potash fertilizers may be added to implement the fertilization of the field, promote the transformation of the crop, and strive to shake the tillers. Cheng Sui, improve the rate of population spikes. The degree of holding up the fields to grasp Tanabe not "white", there is a small amount of fine cracks, you can water, and then dry, so back and forth, step by step, eventually reaching the soil sinking, the foot of the field does not sink, pale faded leaves, leaves Straight. In addition to the establishment of water layer in the straw returning field blockage in the booting stage and heading flowering stage, the other stages are mainly alternating wet and dry and intermittent irrigation to prevent the group rebound and soil softening after rehydration, ensuring the coordination of soil, water and gas during panicle differentiation. , To increase rice root activity and leaf photosynthetic function during heading stage, and increase dry matter accumulation in later period.
Second, to strengthen the fertilizer operation, competing for spikes
Combining the current growing situation and the previous disaster situation, optimize the adjustment of fertilizer management strategies. In general, due to the early rain and sunshine, the growth of paddy rice was slow in some areas, and the amount of fertilizer was sufficient, and the color of the leaves was dark. Appropriate control of the amount of fertilizer was needed to prevent late-maturing late-maturing. In the areas along the Yangtze River and southern Jiangsu, the direct seeding rice and machine transplanting planting (species) fields that are severely affected by floods, slow seedling growth, and serious fertilizer loss must seize the limited time during which effective tillering occurs, based on looting, and increase seedling production. Restore fat and promote strong fertilizer, promote childbirth and seedling transformation. For direct-seeded rice and late-planter plug-in plots with long flooding time and poor root activity, biochemical regulators should be sprayed properly to grow roots and leaves to accelerate the restoration of growth. In Central Jiangsu and Huaibei regions, hand-planting and planting plots with normal fertility, suitable size of population, adequate planting measures, and fading leaf color were used to timely apply panicle fertilizer to promote differentiation of spikelets and reduce degradation of spikelets. Increase the number of grains and increase the rate of solidification to lay a good foundation.
The application of panicle fertilizer should be based on the fertility process (the remainder of leaf age), and based on the condition of the seedlings and the paleness of the leaf color, the dosage and the appropriate period should be grasped. Due to the large area of ​​straw returned to the field, the amount of panicle fertilizer is controlled at 30% to 40% of the total amount of fertilizer. In Huaibei area, the population is moderately moderate, and the middle japonica hybrid rice and mid-maturing japonica rice are dominated by preserved flowering fertilizers. Hybrid mid-season rice was applied at a leafage residue of 1.5-1.0, middle-maturing mid-season rice was applied at a leaf age of 2.5-2.0, and 5.0 kg of urea could be used. Suzhong area, late-maturing Zhongwan and early-maturing late-early panicle rice panicle fertilizer should be taken into consideration and promoted. Huafa fertilizer is generally applied at the rest of the leaf age range of 3.5 to 3.0, and 15 mu of high-concentration compound fertilizer is added with 5.0 kg of urea. The fertilizer is generally applied when the leaf age is around 1.0, and can be applied to 5.0 kg of urea. Insufficient groups should apply heavy ear fertilizer early. Hybrid mid-season rice was applied at the leaf age of 2.0-1.5, and 7.5 kg of urea was used. Late maturing japonica rice and early maturing late japonica rice, to promote the application of flower fertilizer in the remaining leaf age of about 4.0, the use of high-yield compound fertilizer 15 kilograms plus urea 10 kilograms, as appropriate after the flowering fertilizer, generally the rest of the leaf age can be applied to Urea 1.0 acres 5.0 kg or so. The group is prosperous, and the application of panicle fertilizer can delay the age of one leaf and reduce the dosage appropriately. In southern Jiangsu Province, the direct-seeded rice and machine-transplanted plots with late fertility, insufficient colony, and pale faded leaves have to be appropriately advanced and increased in dosage. For straw returning to fields, the amount of nitrogen fertilizer used in the early stage, and the darker color of the jointing stage, the amount of fertilizer should be reduced or not applied.
Third, to strengthen the prevention and control of pests and diseases to reduce production losses
According to the prediction and forecast of the provincial plant protection system, the early low-temperature and rainy weather and the recent high-temperature and high-humidity weather are conducive to the expansion and spread of diseases such as rice blast, sheath blight, and bacterial blight, and are also beneficial to rice leaf roller and rice planthoppers. Move in, breed and harm. It is expected that in the middle and late periods, the "three-disease three-worm", which is dominated by rice blast, rice smut, sheath blight, rice leaf roller, rice planthopper and aphid, will tend to be ecologically dominant. All localities must carry out appropriate prevention and control in accordance with the forecasts and forecasts of the local plant protection department. Adhere to the scientific prevention and control strategy, vigorously promote efficient and safe drug types on the road to improve the control effect. For a few fields where there are more weeds, avoid the use of high-temperature time, and use good security to eliminate or manually remove the roadside chemicals. Direct hybrid rice in rice fields is easily discerned at this time. Generally, the leaves are slender, the leaves are light and the plant height is slightly higher. Local farmers must be mobilized to remove the hybrid rice and reduce the damage.
Fourth, strengthen disaster prevention and reduction to ensure high yields
At present and for some time to come, it is the season of typhoon, rainstorm, extreme high temperature and abnormally low temperature. All localities must take disaster prevention and reduction as the most important task in current agricultural work, strengthen organization and leadership, strengthen propaganda and launch, and strengthen disaster prevention and reduction work. initiative. The temperature in the province has continued to rise recently, with local temperatures reaching 40°C or more. According to the latest forecast of the provincial meteorological department, high temperatures will continue for some time. For the middle-japonica rice that has already been ear-splitting hybrid japonica rice and the early fertility process, the defense against high-temperature heat damage should be done. Appropriately increase the depth of irrigation, and the conditions of the area to adopt flow irrigation or daily irrigation night row and other measures to reduce the field temperature. The extreme high temperature can easily lead to excessive nutrient consumption in rice, decreased root activity, and reduced photosynthetic capacity. Local conditions depend on seedlings to supplement nutrients as appropriate to compensate for insufficient supply of nutrients and reduce the risk of high temperatures. The agricultural departments at all levels must organize a large number of government organs and agricultural technicians to in-depth production lines, discuss and analyze rice growth, discuss and formulate management technical advice. Guide farmers to adjust measures to local conditions and classify management and effectively improve the timeliness and pertinence of field management. We must do a detailed and realistic plan for disaster prevention and reduction to ensure that fewer disasters reduce production, and that minor disasters do not reduce production, and that we must win the harvest of autumn crops and high yields.
Kn95 Fold Flat 3D Mask,Kn95 5 Layers Face Mask,Kn95 Fold Flat Respirator,Kn95 Filters Cup Face Mask
Jiangmen anjian biotechnology co. LTD , https://www.jmanjianmask.com