The Effect of Applying Sheep Manure to Greenhouse Asparagus on Fruit Stem Yield and Commerciality
In order to apply sheep manure reasonably to improve the soil fertility and effectively improve the soil structure of asparagus fields;at the same time,to reduce environmental pollution caused by nutrients and metal elements in sheep manure,the same amount of ternary com-pound fertilizer(N-P2 O5-K2 O=14%-16%-15%)was applied to greenhouse asparagus for one year.At the same time,different amounts of fully decomposed sheep manure were increased in two stages,and the effects of applying conventional amounts of ternary compound fertilizer in-stead of sheep manure on asparagus stem yield,commercialization,and economic benefits were studied as a control.The results showed that compared with not applying sheep manure,the growth of asparagus fruit stems treated with sheep manure was relatively stable throughout the entire growth period,and the fertility index was significantly improved.Its nutritional growth and bulb differentiation were promoted,and the quality of asparagus fruit stems was greatly improved.The application of sheep manure could increase the thickness of asparagus fruit stems,as well as the height,number,and growth index of asparagus stems,and the changes in growth index and the thickness of the next crop of fruit stems were basically consistent.The optimal treatment for T2(30 t+25 t)is to apply fully decomposed sheep manure to asparagus stem yield,commercialization,and economic benefits at a rate of 1 hm2.
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