defgf67ay
Dołączył: 29 Paź 2010
Posty: 863
Przeczytał: 0 tematów
Ostrzeżeń: 0/5
Skąd: England
|
 Wysłany: Wto 12:07, 15 Lut 2011 Temat postu: glätteisen ghd Cultivation techniques of rice qual |
 |
|
Cultivation techniques of rice quality and control measures
Illumination changes, determine optimum sowing time in the formation of high-quality rice. In general, early sowing should meet the transplanting of rice seed germination and seedling survival of the minimum temperature requirements, late sowing of rice will have to ensure the safety of heading in the heading. Seedling cultivation 2-3, timely transplanting of seedling age the length of the transplanted seedling growth and yield, grain quality have different effects, it should be based on growing region, variety characteristics, farming systems and so timely transplanting, after transplanting the seedlings to ensure robust growth and yield formation of rice quality. Seedling cultivation according to local conditions, select seedlings moist, plastic seedling, dry nursery and other means. 2.4 rational close planting rice planting too close, too thin is not conducive to the formation and improve the quality of rice, so only the appropriate population density, based on the reasonable control of rice crop growth, is conducive to high yield, but also to play varieties of quality characteristics. In general, the late planted fields, thin fields, seedling plots of poor quality may be increased density, increased planting density, and promote multi-spike; and paddy soil, fertilizer, water and other conditions are better, should be properly diluted broadcast, and promote a large spike, grain number, grain weight, to improve rice quality. 2.5 scientific fertilization to improve rice quality scientific application of fertilizers is an important measure, the first to prohibit the use of the agricultural sector without state or provincial registration of chemical or biological fertilizer; Secondly, we should look at varieties, soil, before the crop growth stage, weather, etc. appropriate, fertilizer, nitrogen, phosphorus and potassium fertilizer application, so that The rational application of fertilizer to increase soil organic matter content, cultivate the soil texture and loose structure of the microbial activity strong, permeable permeability, and soil clean, less pollution, to reduce the long-term application of chemical fertilizers, pesticides, herbicides and residual pollution caused by . Should also note that with the grain quality of silicon and the zinc, magnesium and other trace elements in the rational application of fertilizer, good soil fertility, basal dressing of nitrogen is sufficient, the late P and K can also be sprayed 1-2 times the appropriate (eg, 0.2% potassium dihydrogen phosphate solution applied), and added nitrogen as growth of the seedlings,[link widoczny dla zalogowanych], not only can improve the setting rate and grain weight, more conducive to improving head rice rate and reduce the chalky grain rate, in addition, the implementation of crop residues also fields and also fertilize the soil in winter green manure, an important measure quality tuning. Timely irrigation of rice fields turn green 2.6 to maintain a certain water layer,[link widoczny dla zalogowanych], to the seedlings to create a more stable temperature and humidity environment for early onset of new roots, accelerate reviving, but the water level is not too deep; tillering termination period shall be null and void the appropriate control of the drainage Shaitian tiller, Shaitian see growth of the seedlings and soil, seedling number of foot, leaves thick, high fertility plots should be re-drying early sun, people can not stand stuck feet off the yellow leaves was appropriate; the contrary, should be later than the sun or sun light Lu Tian, a little leaf color fades to appropriate, not overdone or insufficient; booting stage, the irrigation of about 10cm, which will help panicle, increased seed set; filling stage should be taken to alternate wet and dry and wet irrigation method, it is premature water, to extend the life of the leaf photosynthesis, promote rice roots robust, strong wet and dry seeds, live stalks mature, both to increase grain number, seed setting rate and grain weight to win high-yield, but also improve grain plumpness and head rice rate of improvement rice quality. However, wastewater irrigation should be avoided,[link widoczny dla zalogowanych], so as not to affect rice quality. 2.7 insect pest prevention and control of chemical pesticides residues in rice is often within, and thus no or little use is appropriate, insect pest control should always implement the as the center-based care culture, applied insect toxin and other biological control of insect predators and ecological means of control integrated pest and disease control measures; the advantages of community control weed growth; to non-toxic or low toxicity, no residual or low residual replace the highly toxic pesticide pollution-free and efficient, high residues of chemical pesticides,[link widoczny dla zalogowanych], biological pesticides to replace the traditional new insecticides, fungicides, reducing the soil residue. Carbendazim available before planting, soak seeds lime and other agents to kill bacteria, eliminate sources of pollution; standardized cultivation, scientific fertilization, rational irrigation and reduce the level of pest damage; application control rice blast diversity; potassium for use bio-fertilizer,[link widoczny dla zalogowanych], can increase the potassium content of the soil, but also control of red rice blight occurred; rice farming herbivorous fish can play a role in herbicide. Late ripening rice harvest of 2.8 in a timely manner or ripe stage is the best time to harvest, and climatic conditions of different varieties of rice is slightly different harvest, harvest early, immature grains, green dead meters more, and protein content are more high, rice starch swelling due to restrictions and hardened, so that processing and eating quality such as decreased; the other hand, the delay time for the rice harvest poor gloss, brittle and more, becoming more chalky, viscosity and flavor decreased. Therefore, in practice high-quality rice production should be strictly timely harvest.
More articles related to topics：
moncler sito ufficiale Father and son soldiers _54
[link widoczny dla zalogowanych]
[link widoczny dla zalogowanych]
Post został pochwalony 0 razy
|
|
