Using "wheat-rice" plant pattern as control, the nitrogen fertilizer application effect in rice field was studied with the pattern "shed crop-rice"and "grass-rice" in reparian area.
The effect of magnesium on litchi and citrus fruit are studied,the field trial results show the following: in Mg deficient soils,adequate Mg input will give an increase in yield of 11.4%~33.3% with economic benefit income of 0.8%~37.5%;
Under the equal quantity of N,P,K,the effect studies of mixed fertilizer on rice,sugarcane,pepper and litchi were carried out,and the results showed that the crops yield of applying normal mixed fertilizer increased by 5.67%-14.64% as compared with the conventional fertilizer;
In the paper,the effects of applying the slag as silicon fertilizer on rice were introduced. The result showed that the slag as silicon fertilizer could increase the rice yield to different content,including promoting growth of spikelet and increasing ripe rate,total grains and enhancing resistance.
it has large been considered as a forbidden zone for NO3-N fertilizer application to paddy fields. A series of field trials lasting for two years from 1989 to 1990in Red Soil Experimental Station, CAAS, show that compared with NH4-N fertilizer(NH4CI ) application to paddy fields in southern Hunan province, it is favourable to the plant growth and development of early rice seedlings to the reproduction of early and late rice, and to the resistance of rice to plant diseases and insect pests. The experiments d...
The effects Of three kinds of plant--growth regUlators Yemianbao ao, Fengchansu and Shibifeng on mulberry trees and silkworms were tested in this paper,and the results showed that treatment of mulbery trees with those regulators increase the contents of chlorophyll, sarbohydrates, proteins and fats of mulbory leaves significantly. And mulberry leaf yield increase by 15%-30%. cocoon yield and quality of the silkworms fed on the treated leaves were raised without obvious negative functions. Of the three regu...