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通过对粗沙潮土小麦套作花生轮作制施用有机肥、灌水和覆盖研究表明，三者均显著提高了小麦产量，有机肥与覆盖提高了花生产量，小麦产量与花生产量分别与它们成抛物线关系。以小麦为例，最高产量用量为有机肥５６６９．８ｋｇ／６６６．７ｍ２，灌水定额３２．４ｍ３／（６６６．７ｍ２·次），覆盖３３３．４ｋｇ／６６６．７ｍ２。最佳经济用量分别为２２３３．６ｋｇ／６６６．７ｍ２，２０．７ｍ３／６６６．７ｍ２和２２９．６ｋｇ／６６６．７ｍ２。同时还分析了三因素对水量平衡和小麦、花生产量构成因素的影响。灌水尽管在来水中不是最主要的，但渗漏量、蒸散量分别与之呈正相关，砂土小麦以每次灌２０ｍ３／６６６．７ｍ２～３０ｍ３／６６６．７ｍ２为宜。施用有机肥和覆盖均能提高土壤耕层蓄水能力，尤其有机肥能提高水分利用效率，但过量施用有机肥小麦成穗率和花生经济系数降低，有机肥用量宜在２３００ｋｇ／６６６．７ｍ２～５０００ｋｇ／６６６．７ｍ２，而覆盖宜在２３０ｋｇ／６６６．７ｍ２～４５０ｋｇ／６６６．７ｍ２。
Organic fertilizer was applied on peanut rotation system of coarse-grained alluvial soil wheat. The research on irrigation and cover showed that all three significantly increased the yield of wheat. Organic manure and mulch increased the yield of peanut. Wheat yield and peanut yield were parabola relationship. Take wheat as an example, the highest yield is 5669.8kg / 666.7m2 of organic fertilizer and 32.4m3 / (666.7m2) of irrigation quota, covering 333.4kg / 666.7m2. The best economic consumption were 2233.6kg / 666.7m2, 20.7m3 / 666.7m2 and 229.6kg / 666.7m2, respectively. At the same time, the effects of three factors on water balance and the composition of wheat and peanut yield were also analyzed. Although irrigation is not the most important in incoming water, leakage and evapotranspiration are positively correlated with them respectively. It is advisable to irrigate 20m3 / 666.7m2 ~ 30m3 / 666.7m2 of sand and wheat each time. Application of organic manure and mulch can improve soil water storage capacity, especially organic manure can improve water use efficiency, but over-applied organic manure wheat heading rate and peanut economic coefficient decreased, organic fertilizer dosage should be in 2300kg / 666.7m2 ~ 5000kg / 666.7m2, and cover should be at 230kg / 666.7m2 ~ 450kg / 666.7m2.