Rice dry planting is a saving water way,which is to sow seeds in1.5~2.0cm deep with seeder,then cover and press soil when moisture content is above25%in15cm deep soil after dry leveling land.
The exotic varieties of rice were planted by dry direct seeding. The results showed that the varieties Longjing2 and Longjing3 were adaptable to dry direct seeding, and their yields could reach 5 872 kg/hm~2 and 5 783 kg/hm~2 respectively, which could be used as draught-(resistant) and water conservation seeds planted in spring in northest.
A case study shows that the optimal irrigation schedule can achieve the effect of water saving and production increment compared with the conventional irrigation schedule in which the whole field is fully irrigated.
The dynamics of Spm accumulation in leaves under salinity conditions resembled that of phosphoenolpyruvate carboxylase (PEPC), a key enzyme of the water-saving CAM pathway of photosynthesis.
It can be applied as a basal dressing all in one time to soil and thus also used as a labour-saving and crop yield-increasing fertilizer for a non-intertillage, plastics film covering and water-saving agriculture.
Under the condition of water-saving irrigation, the suitable oasis acreage is 5515.49 km2, in which the suitable cultivated land acreage is 2322.31 km2.
Our results suggest that a moderate reduction in light intensity can be a useful method for improving growth and saving water in hot and dry environments.
Based on a detailed investigation of vertical distributions of fine roots in Robinia pseudoacacia plantations at the Ansai Soil and Water Conservation Station, Shaanxi Province, a model was developed for the deep distribution of fine roots of R.
mangium plantations were 2,023.0, 2,158.4 and 2,260.4 t/hm2, respectively, and the all value of water conservation were 1,372.70, 1,474.42 and 1,549.91 yuan (RMB)/hm2, respectively.