Effects Of Side Deep Fertilizing On Rice In The857Farm

This experiment was conducted in the857farm on2013. Longjing31, Longjing29as testmaterials, with the method of conventional fertilizer and base fertilizer whole layer fertilizationas contrast and four deep side fertilizing treatments (the fertilizer was3cm on side of seedling,5cm from the surface fertilization method), that is, side deep fertilizing quantity was the same ascontrast and fertilization amount decreased5%,15%and25%compared with the control group,other fertilizers are the same. Discuss the effect of different amount of basal fertilizer on ricegrowth, yield, quality and utilization rate under the mechanical transplanting and side deepfertilizing mode. To provide an ecological, safety theoretical basis and technical support for therealization of high yield, high quality rice fertilization technique. The main research results are asfollows:1. The first treatment of two varieties reviving earlier, the fourth treatment’s leaf age increasemost, compared with the control, leaf age increased0.12, and the first to enter the young panicledifferentiation stage (7.5leaf). And side deep fertilizing treatment promoted the growth of riceplant height increased early, make the second treatment of Longjing31and the fourth treatmentof Longjing29increased8.90%and7.89%respectively; Except the first treatment, different sidedeep fertilization treatments all improved the rice tillering rate. Tillering rate of the secondtreatment and the third treatment of Longjing31and Longjing29increased most, respectively90.28%and79.22%.2. The third treatment increase leaf area index of Longjing31significantly, ck was the lowest,the second and the fourth treatments were moderate, while the first and the fourth treatmentincreased the leaf area index of Longjing29significantly and the second treatment was thelowest. The third treatment and ck were moderate, the fourth treatment improved thereproductive stage of Longjing31dry matter accumulation significantly, followed by processingtwo; The third was more conducive to the treatment of Longjing29dry matter accumulation.3. The effects of side deep fertilization on yield and yield components were different. The yieldof Longjing31increased by increasing the yield of rice harvested panicles, but the differenceamong the number of grains per spike, the seed setting rate and1000-grain weight were notsignificant, Longjing29showed large differences in number of grain, other yield componentswere not significantly different. As for Longjing31, the yield of the fourth treatment reached9311kg/hm2, increased8.2%. As for Longjing29, treatment3reached8872.2kg/hm2, increased7%. 4. Side deep fertilizing is conducive to improve the utilization rate of the fertilizer. With thedecreasing of the amount of fertilizer, agronomic efficiency increased gradually, Longjing31andLongjing29accessed to the90.31%and71.56%respectively. With the reducing of the amountof nitrogen application, biased productivity increased gradually, Longjing31and Longjing29accessed to46.93%and42.72%. Therefore, the ecological benefit was huge.5. Side deep fertilizing usually reduced protein content of two varieties, the fourth treatment mayincrease comprehensive score of Longjing31with1.98points, while treatment3may increasecomprehensive score of Longjing29with0.07points. But the effect on milled rice, whiteness,amylose starch and other indicators did not reach significant levels.