Rice increased fertilization promoting premature technical measures

Due to floods , the province in many places rice seedlings time later , transplanting seedlings seedling age is short, weak growth of the seedlings , the latter by the " cold dew wind" greater threat . This paper proposes increasing rice fertilization promoting premature technical measures are as follows :

A timely topdressing reviving tillering . First, the lack of seedling age , growth was slow plots, in August 20 topdressing nitrogen and potassium , to promote tillering turning green . Topdressing urea fertilizer per acre 5-7.5 kg , potassium or potash for fertilizer application is not enough plots , potassium chloride 5 kg per acre Gasch . Two for planting late, too weak Miaoqing plots in topdressing urea ( 7.5-10 kg / mu ) at the same time ,hand pump sprayers  available " nine hundred twenty " modifier for foliar application , in order to accelerate growth of rice . Usage: mu with " nine hundred twenty " modifier 1 to 2 grams watered 50 kg foliar spray 1. Three for the seedling age is normal but slow growth bias plots , topdressing urea 4-5 kg per mu , bottom plots potassium deficiency , topdressing potassium chloride 3-4 kg .

2 , early foliar strong Postheading . In the Sept. 15 , to take the way topdressing spraying strong Postheading spike . Application method : first , as the growth of the seedlings 3-5 kg ​​of urea per acre applicator , and then 0.5 kg 0.5 kg potassium dihydrogen phosphate, urea, zinc sulfate heptahydrate 0.25 kg 50 kg watered after mixing choose cloudy or sunny 9:00 before or after 4 pm with a sprayer for spraying . Were back pack sprayer sprayed twice at intervals of 4-5 days is appropriate. Note sprayer spraying fertilizer used repeatedly washed with water before , herbicides and other residues resulting seedlings to avoid injury.