Using more calcium fertilizer and organic fertilizer in basal fertilizer, dressing seed with minor elements or growth regulating agents of promoting germination and taking root, and bestowing or controlling nitrogen fertilizer during growing season properly can enhance crop's ability of salt endurance and adaptability of brackish water irrigation, promote wheat and maize growth, increase biology output and economy output by 15%~30% and 15% respectively.
Fitness analysis of seed and vegetative reproduction of clonal tree Symplocos laurina
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A bottleneck in sexual propagation appeared at the stage from seed to seedling, while in clonal propagation it appeared during the period from an asexual plantlet to a ramet.
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Based on the growth, wood property of the ortets, and rooting abilities of cuttings, 32 Pinus massoniana clones for pulp use were selected from forests of superior provenance, mixed families, and progeny test of seed orchard by two-step selection.
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Altitudinal patterns of the flora of seed plants of Dawei Mountain in Yunnan Province, south China
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Meanwhile, further investigations have also been made to the flora of Dawei Mountain, which has been accounted for in the literature, as Flora Yunnan, The Seed Plant in Yunnan, and so on.
The ridged farming system is a customary farming method for most of the crops in the North-eastern part of China. In general, the ridged farming plow bottoms may be classified into two basic types; they are the planeshaped plow bottom and the curved-shaped one. This paper is to analyze which one of them is more suitable to form the ridge before sowing the seed. In comparison of these two plow bottom types there are three characteristics to be tested: the cross-section of the ridge, the movement of th...
The ridged farming system is a customary farming method for most of the crops in the North-eastern part of China.In general,the ridged farming plow bottoms may be classified into two basic types;they are the planeshaped plow bottom and the curved-shaped one.This paper is to analyze which one of them is more suitable to form the ridge before sowing the seed. In comparison of these two plow bottom types there are three characteristics to be tested:the cross-section of the ridge,the movement of the soil ...
The grinder plate type seed inetering device is a new type of feeding device used for planting wheat, sorghum, rice, pea, bean, rape, millet and flaxseed with a better uniformity of seed distribution.The seed hopper used for grinder plate type metering device can be also used for the edge-dropplate seed-metering device for hill-drop or single feed of corn and the reverse-feed droping mechanism for drilling undelinted cottonseed.This paper describes the structural parameters, technolo...