Paddy pesticide use question is much, pesticide uses a note to want to had closed

The thing that the attention needs in pesticide use process is too much, but integral principle is specific aim uses drug, inchoate with medicine, prevention and cure is given priority to. Pesticide cent is pesticide of prevention and cure of plant diseases and insect pests, still have herbicide agriculture chemical.

The disease with common paddy belongs to rice blast undoubted, after coming on, can cause substantially reduction of output, it is to cause even close absolutely. Rice blast is in straw or above paddy live through the winter, wave the 2nd year as wind come loose above paddy, when taking the advantage of paddy resistance to lose next, invade catch, progenitive, cause a harm. In the development process of paddy, 4 leaves period arrive tillering period comes on easily, again later is ear initial stage comes on easily also.

Rice blast hits medical time to be in tillering period and ear period two time are best. tillering period wants diligent observation, see on 3 part of a historical periods of paddy, if discover rice blast ill spot should use drug in time, can use 3 annulus Zun kind drug has inchoate treatment, come on left and right sides of relatively serious word interval a week undertakes 2 times using drug.

The white leaf blight of paddy, the bacterial sex disease that white leaf blight is a model, paddy because temperature is inferior,the bacterium is gone against to cause in inchoate moment, come on not easily all the time so, but the cut that there still can be rice through water hole in inchoate bacteria undertakes invading catching to paddy, when later period temperature just can come on aptly.

The withered sick time that make drug is in Bai Xie paddy jointing later period, want to often have observation to paddy right now, if discovery comes on,the phenomenon should use drug in time, come on especially center. Can use agricultural streptomycin or bright amine of Mi of fluorine silicon Zun undertakes preventing and cure, no matter come on,initial stage still is medium later period, want to undertake preventing and cure with medicine continuously, removed a week is controlled, the basis sends sick condition 2-3 second with medicine.

The insect pest such as paddy plant hopper, rice borer, insect pest is optimal the period that use drug is to coming on inchoate, if discovery is field,the plant of 20% above has worm, undertake preventinged and cure with respect to need, paddy plant hopper was May commonly the bottom begins to appear at the beginning of June, time of the prevention and cure that make drug also is it is in this time best. generation is in rice borer in May the first ten days of a month, the 2nd generation is in July the last ten-day of a month, the 3rd generation is in in August the middle ten days of a month, can happen, place time to was controlled August 5, controlled August 25.

Herbicide can be used in each period of paddy, but what use in early days of establish of water seed rice is more, after waiting for paddy to grow, fireweed vivosphere is squeezed to occupy, form a harm very hard also again. The herbicide that paddy uses has a lot of, science is promoted farming after paddy direct seeding seedling asks a few Xie Houke does not hurt Miao Li face to have detailed introduction with gush herbicide, the word that have fun at can be browsed.

Usually paddy is used weed optimal period is to be before emerge, one is arrive in 3 leaves 5 leaves period between. Grand of sulphur of Mi of He Cao enemy, 2 Jia Wuling, Bi can be used to wait before emerge. Amine of grass of acyl of Lin of grand of grand of Bi Mi sulphur, benzyl Mi sulphur, 2 chloroquine, double careless aether, evil Zun, 2 armour can be chosen after paddy emerge careless ester of fluorine of 4 chloric, cyanogen.

In a day in paddy applies medical time to be mixed in the morning for the most part towards evening, escape high temperature weather causes harm to paddy midday, this time also can let medical fluid be above paddy with medicine keep longer.