陕西关中一年两熟地区保护性耕作关键技术综合效应研究——Ⅱ.对两季作物生长发育及产量产值的影响
협서관중일년량숙지구보호성경작관건기술종합효응연구——Ⅱ.대량계작물생장발육급산양산치적영향
Comprehensive effect of the main practices of conservation tillage for double cropping system in Guanzhong basin of Shaanxi Province——Ⅱ.Effect of main practices on the growth, yield and output value of the double cropping system
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