Research on the yield increasing effect and mechanism of green intelligent fertilizer on rice
Green intelligent fertilizer(GIF)was a new fertilizer concept proposed in response to industrial green manufacturing and agricultural green sustainable production.The rice GIF was produced under the guidance of the concept of GIF.In order to evaluate the agronomic performance of this fertilizer on rice,under the premise of equal input of nitrogen and phosphorus nutrients,five kinds of fertilizers were set up:conventional NPK fertilizer(T1),compound fertilizer 1(T2),compound fertilizer 2(T3),GIF1(T4)and GIF2(T5).The effects of different fertilizer varieties on rice yield,yield components,dry matter accumulation,root growth and development,leaf photosynthetic characteristics,grain quality,soil pH,nitrogen,phosphorus nutrient uptake and fertilizer economic benefit were studied.Compared with conventional fertilizer(T1,T2 and T3),T4 increased rice yield by 26.2%,28.4%and 38.1%,respectively,by increasing the effective panicle number of rice.T5 increased the yield by increasing the number of effective panicle,the number of grains per spike of secondary branches and grain weight,which was 38.3%,39.0%and 51.4%higher than that of T1,T2 and T3,respectively.Compared with conventional fertilizer(T1,T2 and T3),T4 and T5 treatments significantly increased above-ground dry matter accumulation,functional leaf SPAD value,soil pH,nitrogen and phosphorus nutrient content and accumulation,and promoted root growth and development of rice with a higher yield to investment ratio.Compared with T1,the two conventional compound fertilizers(T2 and T3)showed no synergistic effect on rice yield and other agronomic traits.Rice GIF had significant synergistic effect on the growth,yield and quality of rice,and had higher economic benefits than conventional fertilizer.
green intelligent fertilizerriceyieldsoil pHfertilizer economic benefit evaluation
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