桃香

思念如蜜蜂，振翅纷涌，清香扑鼻。流水汩汩。远处 几点人影闪动，空旷的桃花林里，三月的风开始撩人心扉 柔和的春雨．扰梦的笑声和越来越轻扬的风筝被这暖人的春风齐刷刷地吹散 三月的质地是白玉．

High Yield Cultivation Techniques of Two Fine Walnut Varieties, Qingxiang and Liaohe 1

Since the introduction of Qingxiang and Liaohe 1 in 2012, both varieties have shown characteristics of beautiful nuts appearance, high quality and high yield of nuts, strong disease resistance after six years regional varieties. Comparison shows that Qingxiang has strong tree vigor, making it suitable for loose planting, needs pollination tree, bears food late and shows very stable yield performance, while Liaohe 1 has medium tree vigor, bears food early and shows stable yield performance. Based on years of regional planting tests, suggestions were proposed to the high yield cultivation techniques of walnut.

Effects of Bagging with Paper Bags and Non-woven Bags on Flavor Compounds of Feicheng Peach

With Hongli Feicheng Peach as the test material, the effects of bagging with 4 kinds of paper bags and 3 kinds of non-woven bags on the soluble sugar, organic acids and aroma compounds in peach fruits were investigated using headspace solid-phase microextraction （HS-SPME） combined with gas chromatogra- phy-mass spectrometry （GC-MS） and high-performance liquid chromatography （HPLC）. The results showed that there were significant differences in sugar and acids contents of peach fruits between different bagging treatments. The sugar con- tent of peach fruits was increased when bagged with single-layer inner-black outer- yellow paper bags and double-layer inner-white outer-yellow paper bags. The organ- ic acid content in peach fruits bagged with all the types of bags except the single- layer inner-black outer-yellow paper bag was increased greatly. The count and rela- tive content of aroma compounds were all decreased after bagging. Combined with the detection results of soluble sugar, organic acids and aroma compounds, the sin- gle-layer inner-black outer-yellow paper bag was suitable for bagging of Hongli Fe- icheng peach.

Breeding and Application of Medium-maturing Late Season Indica Hybrid Rice Taoyou Xiangzhan with Good Grain Quality

Taoyou Xiangzhan, derived from the indica CMS line Taonong 1A and Huanghuazhan （a fine quality conventional rice variety）, is a new medium-maturing late season indica hybrid rice combination. It was evaluated as the 2nd class of fine quality rice variety in Hunan Province in 2012. It is characteristic of high-yielding ability, fine grain quality, good plant type, good lodging resistance and fertilizer tolerance, strong tillering ability and good discoloring at the late growth stage. Taoyou Xiangzhan was registered for release to commercial production by Hunan Provincial Crop Variety Appraisal Committee in June, 2015.

Essential oil of Actinidia macrosperma, a catnip response kiwi endemic to China

Objective: To identify compounds that may be responsible for catnip response of Actinidia macrosperma, and compare chemical compositions in the wild and in vitro regenerated plants. Methods: GC-MS and relative retention indices with n-alkanes as reference points were used for compound identification, and component relative percentage was calculated based on GC peak areas without using correction factors. Results: There are 28 compounds (92.72%) and 15 compounds (93.88%) identi- fied in the essential oils from the wild and regenerated plants, respectively. Dihydronepetalactone, iridomyrmecin, and dihydro- actinidiolide, which are believed to be attractive to felines, are present in both wild and regenerated plants. Actinine was not detected, and beta-pheylethyl alcohol was only present in wild plant. In addition, short-chain enol derivatives, messengers in chemical communication, are commonly present in wild plant of A. macrosperma, but absent in regenerated one. Conclusion: Dihydronepetalactone, iridomyrmecin, and dihydroactinidiolide are responsible for the catnip response of A. macrosperma.

Repellent and Fumigant Effects of Essential Oil from Clove Buds Syzygium aromaticum L. against Tribofium castaneum （Herbest） （Coleoptera： Tenebrionidae）

Essential oil from clove buds Syzygium aromaticum L. Merr. ＆ Perry （Myrtaceae） was extracted using petroleum ether in Soxhlet apparatus. The resultant oil contained eugenol （48.92%）, caryophyllene （18.55%）, α-caryophyllene （3.25%）, eugenol acetate （23%）, cis-13-docosenamide （3.2 1%）, presenting more than 96% of the oil. This oil was examined as a fumigant and repellent agent against adults of the red flour beetle, Tribolium castaneum. Data showed that various concentrations of the oil have revealed dramatic repellent activity against the tested insect, where it gave 100% repellency by 1.0, 0.8, and 0.2% clove oil at 4, 8, 10 min, respectively. The RTs0 and RT95 were 1.1 and 8.0 min at 0.2% and 0.4, 2.6 min at 0.8%, respectively. In addition, fumigation assay has also exhibited strong fumigant activity toward the adults of T. castaneum. At 100 μL oil/L air, mortality was 75, 80 and 100% after 6, 7, and 8 days exposure period with LCs0 and LC95 17 and 70 μL/L air, respectively. The utilization of clove oil for its potential effects against stored product insect is discussed.

Breeding of a New Fine Quality Fragrant Hybrid Rice Combination Taoxiangyoulijing

Taoxiangyoulijing is a new fine quality fragrant hybrid combination bred by matching the fine quality indica sterile line Taoxiang A with the fine quality restorer line R Lijing by Hunan Taohuayuan Agricultural Science and Technology Co.Ltd,Changsha Zhulixiang Agricultural Science and Technology Co.Ltd and Hunan Zhihe Seed Technology Co.,Ltd.The combination is featured with wide adaptability,high yield,strong resistance to rice blast,and GB class 2 high quality.In October 2019,Taoxiangyoulijing was approved by the National Crop Variety Certification Committee and it reached the second class standard of quality score according to the Standard for Fine Quality Rice,Ministry of Agriculture,China.

Breeding of High-Quality Late Rice Combination Taoxiuyouhuazhan

Taoxiuyouhuazhan is a high-quality fragrant late rice combination which was bred by the cooperation between Hu Nan Tao Hua Yuan Agricultural Technologies Co.,LTD.and Changde Institute of Agriculture and Forestry Science.With good yield,wide adaptability,resistance to rice blast,and the quality reaching third level of the national agricultural standard of Quality of Edible Rice Varieties.It has been authorized by the National Crop Variety Committee of the Ministry of Agriculture and Rural Affairs in February 2019.

ENDOMETRIOSIS TREATED BY THE METHOD OF RESOLVING BLOOD STASIS TO ELIMINATE OBSTRUCTION IN THE LOWER-JIAO

48 cases of endometriosis were treated with the Neiyi (ectopic endometrium) No. 2 Pills [symbol: see text] 2 [symbol: see text]) composed of fresh Dahuang (Radix et Rhizoma Rhei), Biejia (Carapax Trionycis) and Taoren Shuang (powdered Semen Persicae). After 3 months of treatment, high effective rates were obtained in menorrhalgia, dyspareunia, proctalgia, hysteromyoma, ovary cyst, and tubercles in the pelvic cavity, with a pregnant rate of as high as 26.7% in sterility. Meanwhile, the levels of plasma PGF2 alpha and PGE2 markedly dropped, while that of 6-keto-PGF1 alpha, beta-EP, and HYP significantly elevated.