在本所与潞麻产地中心小宋生产大队两地进行大麻三要素肥效試驗。两地土壤均为中等地力。本所試驗前茬地为棉花;小宋系豆茬地。試驗材料,氮肥为硫酸銨,磷肥为普通过磷酸鈣,鉀肥为硫酸鉀。每亩施氮、磷、鉀均为純素含量8斤,分氮、磷、鉀、氮磷、 Produced in the center and the production center in Lumang Xiao Song production unit to carry out three elements of marijuana fertilizer test. The soil of the two places are all of moderate earthwork. The pre-trial crop for the cotton; Xiao Song Department stubble field. Test materials, nitrogen fertilizer ammonium sulfate, phosphate fertilizer for the general superphosphate, potassium potassium sulfate. Nitrogen, phosphorus, potassium per acre were vegan content of 8 pounds, divided into nitrogen, phosphorus, potassium, nitrogen and phosphorus,