The Studies Of Produce Present Situation And Technology Approach For High Yields Of Rice In Xinyang City

Xinyang is the largest rice cultivating city in Henna province.Its usual cultivating area is about 6 million mu,accounts for about 70%of the whole province rice cultivate area,paddy rice production hold important position in Xinyang.At present,Xinyang's paddy rice production is in lingering state,although the cultivating area is increasing year by year,the yield per unit is not steady.The whole production increasing by the means of increasing the planting areas.Therefor,it has significant meaning for Xinyang to definite the key factor that limit the paddy rice yield,look for the main problems existed in product,seek the way,method and technique to improve yield,so as to facilitate the improvement of the rice yield,increase peasants' income.This passage analyzed Xinyang's present producing situation and the comparison of production of Xinyang to the nation and the whole province,studied the climate condition of Xinyang,the conclusion as followed:1 the key factor which limited production is the deficiency of leading breed,the development of Xinyang's rice breed experienced two phases:traditional breed leading phase(1950～1985)which experienced five times renovation of breed,hibrid rice extending phase(from 1984 to today)that experienced:took production seriously period(1986～1994),output and quality development simultaneously period(1995～2000)and two-line hybrid rice's spreading and application period. At present,most rice breed cultivated in Xinyang are introduction breeds,and their managements were disordered,so that the peasants are all at sea.2 cultivating system isn't scientific,most area of Xinyang seeding date is the first half part of April resulted the heading stage of rice in the first ten days of August, when the temperature and moisture was high,filling stage in high temperature resulted in low yield and bad quality,Xinyang cultivate rice once a year,rice harvest at the end of August or the beginning of September.and this time the illumination was abundance,the big difference in temperature between day and night was good for filling,but the rice has harvested,it is not only wasted the resource of illumination and temperature,but also with depressed the price quality and benefit.3 Climate levity.Because of the time and intension of monsoon was varied in different years,it resulted the precipitation and distribution of a year changed.The accidence of destroyed weather increased,drought and temperature beyond 25℃in August and wind and overcast and rainy in September resulted lodging is the key climate factor limited the rice yield4 cultivating technique was laggard the application of new technique factor is technical factor which limited the yield production.5 the pathway to improve the output of rice1)be sure of the leading breed;2)innovating the cultivating system;3)spreading the technique of which resistant the biological and abiological natural disaster;4)spreading the new cultivate technique,choose good breeds,confirm the fitting time for breeding,fostering strong seeding,rational density,enhance the field management,harvest in time;5)extending resuming and stabilizing the cultivating area.